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<html lang="en" class="dark">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Hush AI | Voice Audio Studio</title>
<!-- PWA Setup -->
<script>
const manifest = {
name: "Hush AI Studio", short_name: "Hush Pro", start_url: ".", display: "standalone",
background_color: "#0f172a", theme_color: "#8b5cf6",
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};
const manifestLink = document.createElement('link');
manifestLink.rel = 'manifest'; manifestLink.href = 'data:application/manifest+json;charset=utf-8,' + encodeURIComponent(JSON.stringify(manifest));
document.head.appendChild(manifestLink);
if ('serviceWorker' in navigator) {
const blob = new Blob(["self.addEventListener('install', (e) => self.skipWaiting()); self.addEventListener('activate', (e) => self.clients.claim()); self.addEventListener('fetch', (e) => {});"], { type: 'application/javascript' });
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</script>
<script src="https://cdn.tailwindcss.com"></script>
<script src="https://unpkg.com/lucide@latest"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jszip/3.10.1/jszip.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lamejs/1.2.1/lame.min.js"></script>
<script>
tailwind.config = { darkMode: 'class', theme: { extend: { colors: { primary: { 50: '#f5f3ff', 100: '#ede9fe', 500: '#8b5cf6', 600: '#7c3aed', 900: '#4c1d95' } } } } }
</script>
<style>
.drag-active { border-color: #8b5cf6 !important; background-color: rgba(139, 92, 246, 0.1) !important; }
.hidden { display: none !important; }
.spinner { animation: spin 1s linear infinite; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #94a3b8; border-radius: 4px; }
.dark ::-webkit-scrollbar-thumb { background: #334155; }
::-webkit-scrollbar-thumb:hover { background: #64748b; }
.dark ::-webkit-scrollbar-thumb:hover { background: #475569; }
input[type=range] { -webkit-appearance: none; background: transparent; }
input[type=range]::-webkit-slider-runnable-track { height: 6px; border-radius: 8px; background: #cbd5e1; }
.dark input[type=range]::-webkit-slider-runnable-track { background: #334155; }
input[type=range]::-webkit-slider-thumb {
-webkit-appearance: none; height: 18px; width: 18px; border-radius: 50%;
background: currentColor; margin-top: -6px; cursor: pointer;
box-shadow: 0 2px 5px rgba(0,0,0,0.2); transition: transform 0.1s;
}
input[type=range]::-webkit-slider-thumb:hover { transform: scale(1.15); }
#waveform > div::-webkit-scrollbar { height: 6px; }
#waveform > div::-webkit-scrollbar-track { background: transparent; border-radius: 8px; }
#waveform > div::-webkit-scrollbar-thumb { background: rgba(148, 163, 184, 0.5); border-radius: 8px; }
.dark #waveform > div::-webkit-scrollbar-thumb { background: rgba(71, 85, 105, 0.6); }
#waveform > div::-webkit-scrollbar-thumb:hover { background: rgba(148, 163, 184, 0.8); }
.dark #waveform > div::-webkit-scrollbar-thumb:hover { background: rgba(71, 85, 105, 0.9); }
#spectrogram { border-top: 1px solid rgba(148, 163, 184, 0.2); margin-top: 4px; }
.dark #spectrogram { border-top: 1px solid rgba(51, 65, 85, 0.5); }
</style>
</head>
<body class="bg-slate-50 dark:bg-slate-900 text-slate-800 dark:text-slate-200 min-h-screen font-sans selection:bg-primary-500 selection:text-white pb-12 overflow-x-hidden transition-colors duration-200">
<audio id="ws-audio" class="hidden" crossorigin="anonymous"></audio>
<div class="max-w-7xl mx-auto px-4 pt-8">
<header class="flex flex-col md:flex-row items-center justify-between mb-6 gap-4 pb-4">
<div class="flex items-center gap-4">
<div class="inline-flex items-center justify-center p-3 bg-white dark:bg-primary-900/50 rounded-2xl border border-slate-200 dark:border-primary-500/30 text-primary-600 dark:text-primary-500 shadow-[0_0_15px_rgba(139,92,246,0.2)]">
<i data-lucide="mic-off" class="w-6 h-6"></i>
<i data-lucide="sparkles" class="w-4 h-4 absolute transform translate-x-3 -translate-y-3 text-yellow-500 dark:text-yellow-400"></i>
</div>
<div>
<h1 class="text-3xl font-bold text-slate-900 dark:text-white tracking-tight">Hush AI Studio</h1>
<p class="text-slate-500 dark:text-slate-400 text-sm flex items-center gap-1">
<i data-lucide="shield-check" class="w-3 h-3 text-emerald-500 dark:text-green-400"></i> Local 16kHz Background Speaker Suppression
</p>
</div>
</div>
<div class="flex items-center gap-4 flex-wrap justify-center">
<label class="flex items-center gap-2 cursor-pointer group bg-white dark:bg-slate-800 px-3 py-1.5 rounded-lg border border-slate-200 dark:border-slate-700 shadow-sm transition-colors duration-200" title="Processes Left and Right channels independently">
<input type="checkbox" id="stereoCheck" class="w-4 h-4 rounded border-slate-300 dark:border-slate-600 bg-white dark:bg-slate-700 text-primary-500 focus:ring-primary-500 cursor-pointer">
<span class="text-sm font-medium text-slate-600 dark:text-slate-300 group-hover:text-slate-900 dark:group-hover:text-white transition-colors">Preserve Stereo</span>
</label>
<label class="flex items-center gap-2 cursor-pointer group bg-white dark:bg-slate-800 px-3 py-1.5 rounded-lg border border-slate-200 dark:border-slate-700 shadow-sm transition-colors duration-200">
<input type="checkbox" id="normalizeCheck" checked class="w-4 h-4 rounded border-slate-300 dark:border-slate-600 bg-white dark:bg-slate-700 text-primary-500 focus:ring-primary-500 cursor-pointer">
<span class="text-sm font-medium text-slate-600 dark:text-slate-300 group-hover:text-slate-900 dark:group-hover:text-white transition-colors">Auto-Normalize</span>
</label>
<div class="flex items-center bg-slate-100 dark:bg-slate-900 rounded-lg p-1 border border-slate-200 dark:border-slate-700 shadow-sm transition-colors duration-200">
<button id="formatWav" class="px-3 py-1.5 text-xs font-bold rounded-md text-slate-500 dark:text-slate-400 hover:text-slate-800 dark:hover:text-white transition-all">WAV</button>
<button id="formatMp3" class="px-3 py-1.5 text-xs font-bold rounded-md bg-primary-600 text-white transition-all shadow-sm">MP3</button>
</div>
<button id="themeToggle" class="p-2 rounded-xl bg-white dark:bg-slate-800 border border-slate-200 dark:border-slate-700 text-slate-500 dark:text-slate-400 hover:text-primary-500 transition-colors shadow-sm">
<i data-lucide="sun" class="w-5 h-5 hidden dark:block text-yellow-400"></i>
<i data-lucide="moon" class="w-5 h-5 block dark:hidden"></i>
</button>
</div>
</header>
<div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4 mb-8">
<!-- Noise Reduction -->
<div class="bg-white dark:bg-slate-800/80 p-5 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm hover:shadow-md transition-shadow duration-200 flex flex-col gap-4">
<div class="flex justify-between items-center">
<label class="text-xs font-bold text-slate-500 dark:text-slate-400 uppercase tracking-wider flex items-center gap-2"><i data-lucide="cpu" class="w-4 h-4 text-primary-500"></i> Hush Intensity</label>
<div class="flex items-center gap-1.5">
<button id="resetNoise" title="Reset to Default" class="p-1 text-slate-400 hover:text-primary-500 dark:hover:text-primary-400 transition-colors opacity-60 hover:opacity-100 rounded-full hover:bg-slate-100 dark:hover:bg-slate-700/50"><i data-lucide="rotate-ccw" class="w-3 h-3"></i></button>
<span id="noiseLevelValue" class="text-sm text-primary-600 dark:text-primary-400 font-bold bg-primary-50 dark:bg-primary-900/30 px-2 py-0.5 rounded border border-primary-100 dark:border-primary-800/50">100%</span>
</div>
</div>
<input type="range" id="noiseLevel" min="0" max="100" value="100" class="w-full text-primary-500">
</div>
<!-- Bass EQ -->
<div class="bg-white dark:bg-slate-800/80 p-5 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm hover:shadow-md transition-shadow duration-200 flex flex-col gap-4">
<div class="flex justify-between items-center">
<label class="text-xs font-bold text-slate-500 dark:text-slate-400 uppercase tracking-wider flex items-center gap-2"><i data-lucide="speaker" class="w-4 h-4 text-emerald-500"></i> Bass EQ</label>
<div class="flex items-center gap-1.5">
<button id="resetBass" title="Reset to 0dB" class="p-1 text-slate-400 hover:text-emerald-500 dark:hover:text-emerald-400 transition-colors opacity-60 hover:opacity-100 rounded-full hover:bg-slate-100 dark:hover:bg-slate-700/50"><i data-lucide="rotate-ccw" class="w-3 h-3"></i></button>
<span id="bassVal" class="text-sm text-emerald-600 dark:text-emerald-400 font-bold bg-emerald-50 dark:bg-emerald-900/30 px-2 py-0.5 rounded border border-emerald-100 dark:border-emerald-800/50">0dB</span>
</div>
</div>
<input type="range" id="eqBass" min="-12" max="12" value="0" step="0.5" class="w-full text-emerald-500">
</div>
<!-- Treble EQ -->
<div class="bg-white dark:bg-slate-800/80 p-5 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm hover:shadow-md transition-shadow duration-200 flex flex-col gap-4">
<div class="flex justify-between items-center">
<label class="text-xs font-bold text-slate-500 dark:text-slate-400 uppercase tracking-wider flex items-center gap-2"><i data-lucide="audio-waveform" class="w-4 h-4 text-amber-500"></i> Treble EQ</label>
<div class="flex items-center gap-1.5">
<button id="resetTreble" title="Reset to 0dB" class="p-1 text-slate-400 hover:text-amber-500 dark:hover:text-amber-400 transition-colors opacity-60 hover:opacity-100 rounded-full hover:bg-slate-100 dark:hover:bg-slate-700/50"><i data-lucide="rotate-ccw" class="w-3 h-3"></i></button>
<span id="trebleVal" class="text-sm text-amber-600 dark:text-amber-400 font-bold bg-amber-50 dark:bg-amber-900/30 px-2 py-0.5 rounded border border-amber-100 dark:border-amber-800/50">0dB</span>
</div>
</div>
<input type="range" id="eqTreble" min="-12" max="12" value="0" step="0.5" class="w-full text-amber-500">
</div>
<!-- Output Gain -->
<div class="bg-white dark:bg-slate-800/80 p-5 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm hover:shadow-md transition-shadow duration-200 flex flex-col gap-4">
<div class="flex justify-between items-center">
<label class="text-xs font-bold text-slate-500 dark:text-slate-400 uppercase tracking-wider flex items-center gap-2"><i data-lucide="volume-2" class="w-4 h-4 text-rose-500"></i> Output Gain</label>
<div class="flex items-center gap-1.5">
<button id="resetGain" title="Reset to 0dB" class="p-1 text-slate-400 hover:text-rose-500 dark:hover:text-rose-400 transition-colors opacity-60 hover:opacity-100 rounded-full hover:bg-slate-100 dark:hover:bg-slate-700/50"><i data-lucide="rotate-ccw" class="w-3 h-3"></i></button>
<span id="gainVal" class="text-sm text-rose-600 dark:text-rose-400 font-bold bg-rose-50 dark:bg-rose-900/30 px-2 py-0.5 rounded border border-rose-100 dark:border-rose-800/50">0dB</span>
</div>
</div>
<input type="range" id="eqGain" min="-12" max="12" value="0" step="0.5" class="w-full text-rose-500">
</div>
</div>
<main class="grid lg:grid-cols-[300px_1fr] gap-6">
<aside class="flex flex-col gap-4">
<div class="flex flex-col gap-2">
<div id="dropzone" class="bg-white dark:bg-transparent border-2 border-dashed border-slate-300 dark:border-slate-600 rounded-2xl p-6 text-center cursor-pointer transition-all duration-200 hover:border-primary-500 dark:hover:border-primary-500 dark:hover:bg-slate-800/80 group">
<input type="file" id="fileInput" accept="audio/*" multiple class="hidden">
<i data-lucide="file-audio" id="dropzoneIcon" class="w-8 h-8 mx-auto text-slate-400 group-hover:text-primary-500 transition-colors mb-2"></i>
<h3 class="font-semibold text-slate-700 dark:text-white text-sm">Add Audio Files</h3>
<p class="text-slate-500 text-xs mt-1">Drag & Drop or Click</p>
</div>
<div id="dropzoneActions" class="hidden flex justify-between items-center px-2 transition-all duration-200">
<span class="text-xs text-emerald-600 dark:text-emerald-400 font-medium flex items-center gap-1"><i data-lucide="check-circle-2" class="w-3 h-3"></i> <span id="dropzoneIndicatorText">Audio added</span></span>
<button id="clearAllBtn" class="text-xs text-red-500 hover:text-red-600 dark:hover:text-red-400 font-medium flex items-center gap-1 transition-colors cursor-pointer z-10"><i data-lucide="trash-2" class="w-3 h-3"></i> Clear All</button>
</div>
</div>
<div class="bg-white dark:bg-slate-800 rounded-2xl border border-slate-200 dark:border-slate-700 flex-1 flex flex-col overflow-hidden max-h-[600px] shadow-sm">
<div class="p-4 border-b border-slate-200 dark:border-slate-700 flex justify-between items-center bg-slate-50 dark:bg-slate-800/90">
<h3 class="font-semibold text-slate-800 dark:text-white flex items-center gap-2"><i data-lucide="list-video" class="w-4 h-4 text-slate-500"></i> Batch Queue</h3>
<span id="queueCount" class="bg-slate-200 dark:bg-slate-700 text-xs px-2 py-0.5 rounded-full text-slate-600 dark:text-slate-300 font-medium">0 files</span>
</div>
<div id="fileList" class="overflow-y-auto flex-1 p-2 space-y-1">
<div class="p-4 text-center text-slate-400 dark:text-slate-500 text-sm italic empty-state">Queue is empty.</div>
</div>
<div class="p-4 border-t border-slate-200 dark:border-slate-700 bg-slate-50 dark:bg-slate-800/90 space-y-3">
<button id="processBtn" disabled class="w-full flex items-center justify-center gap-2 bg-primary-600 disabled:bg-slate-200 dark:disabled:bg-slate-700 disabled:text-slate-400 dark:disabled:text-slate-500 hover:bg-primary-500 text-white px-4 py-2.5 rounded-xl font-medium transition-all shadow-sm disabled:shadow-none">
<i data-lucide="cpu" class="w-4 h-4"></i> Process
</button>
<button id="downloadZipBtn" class="hidden w-full flex items-center justify-center gap-2 bg-emerald-600 hover:bg-emerald-500 text-white px-4 py-2.5 rounded-xl font-medium transition-all shadow-[0_0_15px_rgba(16,185,129,0.2)]">
<i data-lucide="archive" class="w-4 h-4"></i> Download ZIP
</button>
</div>
</div>
<p class="text-[10px] text-center text-slate-400 dark:text-slate-500 font-mono mt-[-5px]">
Shortcuts: [Space] Play, [←/→] Seek, [Del] Remove
</p>
</aside>
<!-- Main Workspace -->
<section class="bg-white dark:bg-slate-800 rounded-2xl border border-slate-200 dark:border-slate-700 flex flex-col overflow-hidden min-h-[400px] shadow-sm">
<div id="workspaceEmpty" class="flex-1 flex flex-col items-center justify-center text-slate-400 dark:text-slate-500 p-10">
<i data-lucide="activity" class="w-16 h-16 text-slate-300 dark:text-slate-700 mb-4"></i>
<p class="text-lg text-slate-500 dark:text-slate-400">Select a file from the queue to edit</p>
</div>
<div id="workspaceActive" class="hidden flex-1 flex flex-col">
<div class="p-5 border-b border-slate-200 dark:border-slate-700 flex justify-between items-center bg-slate-50 dark:bg-slate-900/40">
<h2 id="activeFileName" class="text-xl font-bold text-slate-800 dark:text-white truncate max-w-[50%]">filename.wav</h2>
<div id="abToggleContainer" class="bg-slate-200 dark:bg-slate-900 p-1 rounded-lg border border-slate-300 dark:border-slate-700 flex items-center shadow-inner">
<button id="btnOriginal" class="px-4 py-1.5 text-xs font-bold rounded-md bg-white dark:bg-slate-700 text-slate-800 dark:text-white transition-all shadow-sm">Original</button>
<button id="btnPreview" class="px-4 py-1.5 text-xs font-bold rounded-md text-slate-500 dark:text-slate-400 hover:text-slate-800 dark:hover:text-white transition-all" title="Hear AI noise reduction applied in real-time">Live Preview</button>
<button id="btnCleaned" disabled class="px-4 py-1.5 text-xs font-bold rounded-md text-slate-400 dark:text-slate-600 cursor-not-allowed transition-all" title="Must Process first to unlock the final baked file">Processed</button>
</div>
</div>
<div class="flex-1 flex flex-col justify-center p-6 bg-slate-50 dark:bg-slate-900/20 relative">
<div class="absolute top-4 right-6 flex items-center gap-2 bg-white/90 dark:bg-slate-900/80 px-2 py-1.5 rounded-lg border border-slate-200 dark:border-slate-700 z-10 shadow-sm backdrop-blur">
<i data-lucide="zoom-out" class="w-3 h-3 text-slate-400 dark:text-slate-500"></i>
<input type="range" id="zoomSlider" min="0" max="200" value="0" title="Adjust Zoom (0 = Fit)" class="w-24 accent-primary-500 h-1 bg-slate-200 dark:bg-slate-700 rounded-lg cursor-pointer">
<i data-lucide="zoom-in" class="w-3 h-3 text-slate-400 dark:text-slate-500"></i>
</div>
<div class="w-full relative">
<div id="waveform"></div>
<div id="spectrogram"></div>
</div>
<div id="timeDisplay" class="absolute bottom-4 right-6 text-xs font-mono text-slate-500 dark:text-slate-400 bg-white/90 dark:bg-slate-900/80 px-2 py-1 rounded shadow-sm border border-slate-200 dark:border-slate-700 z-10">00:00 / 00:00</div>
</div>
<div class="p-5 border-t border-slate-200 dark:border-slate-700 bg-white dark:bg-slate-800/80">
<div class="flex flex-col md:flex-row gap-6 items-center justify-between">
<div class="flex items-center gap-3">
<button id="playBtn" class="w-14 h-14 flex items-center justify-center bg-primary-600 hover:bg-primary-500 text-white rounded-full transition-all shadow-lg hover:scale-105">
<span id="iconPlayWrap" class="flex items-center justify-center ml-1"><i data-lucide="play" class="w-6 h-6 fill-current"></i></span>
<span id="iconPauseWrap" class="hidden items-center justify-center"><i data-lucide="pause" class="w-6 h-6 fill-current"></i></span>
</button>
</div>
<div class="flex items-center gap-2 flex-1 max-w-xl">
<i data-lucide="scissors" class="w-4 h-4 text-slate-400 dark:text-slate-500"></i>
<div class="flex items-center gap-2 bg-slate-50 dark:bg-slate-900 p-2 rounded-lg border border-slate-200 dark:border-slate-700 flex-1">
<div class="flex-1 flex flex-col">
<label class="text-[10px] font-semibold text-slate-500 uppercase ml-1">Start (sec)</label>
<div class="flex gap-1 mt-0.5">
<input type="number" id="trimStart" step="0.1" min="0" value="0.0" class="w-full bg-white dark:bg-slate-800 text-slate-900 dark:text-white text-sm px-2 py-1 rounded border border-slate-200 dark:border-slate-600 focus:border-primary-500 outline-none font-mono">
<button id="setStartBtn" title="Set to current playhead" class="px-2 bg-slate-200 dark:bg-slate-700 hover:bg-slate-300 dark:hover:bg-slate-600 rounded text-slate-600 dark:text-slate-300 transition-colors"><i data-lucide="map-pin" class="w-3 h-3"></i></button>
</div>
</div>
<div class="w-4 border-t border-slate-300 dark:border-slate-600"></div>
<div class="flex-1 flex flex-col">
<label class="text-[10px] font-semibold text-slate-500 uppercase ml-1">End (sec)</label>
<div class="flex gap-1 mt-0.5">
<input type="number" id="trimEnd" step="0.1" min="0" value="0.0" class="w-full bg-white dark:bg-slate-800 text-slate-900 dark:text-white text-sm px-2 py-1 rounded border border-slate-200 dark:border-slate-600 focus:border-primary-500 outline-none font-mono">
<button id="setEndBtn" title="Set to current playhead" class="px-2 bg-slate-200 dark:bg-slate-700 hover:bg-slate-300 dark:hover:bg-slate-600 rounded text-slate-600 dark:text-slate-300 transition-colors"><i data-lucide="map-pin" class="w-3 h-3"></i></button>
</div>
</div>
</div>
</div>
<div>
<button id="downloadSingleBtn" class="hidden flex items-center gap-2 bg-slate-200 dark:bg-slate-700 hover:bg-slate-300 dark:hover:bg-slate-600 text-slate-800 dark:text-white px-4 py-3 rounded-lg text-sm font-medium transition-all border border-slate-300 dark:border-transparent">
<i data-lucide="download" class="w-4 h-4"></i> Save
</button>
</div>
</div>
</div>
</div>
</section>
</main>
</div>
<!-- Web Modules -->
<script type="module">
import WaveSurfer from 'https://unpkg.com/wavesurfer.js@7/dist/wavesurfer.esm.js';
import Spectrogram from 'https://unpkg.com/wavesurfer.js@7/dist/plugins/spectrogram.esm.js';
// --- HUGGING FACE DIRECT FETCH INTERCEPTOR FOR HUSH INTEGRATION ---
if (typeof window.SharedArrayBuffer === 'undefined') { window.SharedArrayBuffer = window.ArrayBuffer; }
const originalFetch = window.fetch;
window.fetch = async function(...args) {
let request = args[0];
let reqUrl = typeof request === 'string' ? request : (request && request.url);
if (reqUrl && typeof reqUrl === 'string') {
let newUrl = null;
if (reqUrl.includes('df_bg.wasm')) newUrl = 'https://huggingface.co/trysem/DeepFilterNet3/resolve/main/df_bg.wasm';
else if (reqUrl.includes('DeepFilterNet3_onnx.tar.gz')) newUrl = 'https://huggingface.co/weya-ai/hush/resolve/main/onnx/advanced_dfnet16k_model_best_onnx.tar.gz';
if (newUrl) args[0] = request instanceof Request ? new Request(newUrl, request) : newUrl;
}
return originalFetch.apply(this, args);
};
// --- STATE MANAGEMENT ---
const state = {
files: [], activeId: null,
settings: { format: 'mp3', normalize: true, stereo: false, noiseLevel: 100, bass: 0, treble: 0, gain: 0 },
ProcessorClass: null,
assetConfigObj: {
cdnUrl: 'https://huggingface.co/weya-ai/hush/resolve/main/onnx',
modelUrl: 'https://huggingface.co/weya-ai/hush/resolve/main/onnx/advanced_dfnet16k_model_best_onnx.tar.gz',
wasmUrl: 'https://huggingface.co/trysem/DeepFilterNet3/resolve/main/df_bg.wasm'
},
dfNetProc: null, wavesurfer: null, playbackMode: 'original',
liveCtx: null, mediaNode: null, liveNodes: {}
};
// --- UI BINDINGS ---
lucide.createIcons();
const UI = {
dropzone: document.getElementById('dropzone'), fileInput: document.getElementById('fileInput'),
dropzoneActions: document.getElementById('dropzoneActions'), dropzoneIndicatorText: document.getElementById('dropzoneIndicatorText'),
clearAllBtn: document.getElementById('clearAllBtn'), dropzoneIcon: document.getElementById('dropzoneIcon'),
fileList: document.getElementById('fileList'), queueCount: document.getElementById('queueCount'),
processBtn: document.getElementById('processBtn'), downloadZipBtn: document.getElementById('downloadZipBtn'),
workspaceEmpty: document.getElementById('workspaceEmpty'), workspaceActive: document.getElementById('workspaceActive'),
activeFileName: document.getElementById('activeFileName'), playBtn: document.getElementById('playBtn'),
iconPlayWrap: document.getElementById('iconPlayWrap'), iconPauseWrap: document.getElementById('iconPauseWrap'),
timeDisplay: document.getElementById('timeDisplay'), trimStart: document.getElementById('trimStart'),
trimEnd: document.getElementById('trimEnd'), btnOriginal: document.getElementById('btnOriginal'),
btnPreview: document.getElementById('btnPreview'), btnCleaned: document.getElementById('btnCleaned'),
downloadSingleBtn: document.getElementById('downloadSingleBtn'), themeToggle: document.getElementById('themeToggle'),
zoomSlider: document.getElementById('zoomSlider')
};
function updateProcessButtonText() {
const count = state.files.length;
if (count === 0) {
UI.processBtn.innerHTML = `<i data-lucide="cpu" class="w-4 h-4"></i> Process`;
UI.processBtn.disabled = true;
} else if (count === 1) {
UI.processBtn.innerHTML = `<i data-lucide="cpu" class="w-4 h-4"></i> Process`;
UI.processBtn.disabled = false;
} else {
UI.processBtn.innerHTML = `<i data-lucide="cpu" class="w-4 h-4"></i> Start Batch Processing`;
UI.processBtn.disabled = false;
}
lucide.createIcons();
}
function setProcessButtonState(isProcessing, progressStr = '') {
if (isProcessing) {
UI.processBtn.disabled = true;
UI.processBtn.innerHTML = `<i data-lucide="loader-2" class="w-4 h-4 spinner"></i> ${progressStr}`;
} else {
updateProcessButtonText();
}
lucide.createIcons();
}
// --- PRE-LOAD AI MODEL ON STARTUP ---
window.addEventListener('DOMContentLoaded', async () => {
setProcessButtonState(true, "Loading Hush AI...");
try {
const dfModule = await import('https://esm.sh/deepfilternet3-noise-filter@1.2.1');
state.ProcessorClass = dfModule.DeepFilterNet3Core || dfModule.DeepFilterNoiseFilterProcessor;
state.dfNetProc = new state.ProcessorClass({
sampleRate: 16000, noiseReductionLevel: state.settings.noiseLevel, assetConfig: state.assetConfigObj
});
await state.dfNetProc.initialize();
setProcessButtonState(false);
} catch (err) {
console.error(err);
UI.processBtn.innerHTML = `<i data-lucide="alert-triangle" class="w-4 h-4"></i> AI Error`;
lucide.createIcons();
}
});
// --- THEME & SETTINGS LOGIC ---
UI.themeToggle.onclick = () => { document.documentElement.classList.toggle('dark'); };
document.getElementById('stereoCheck').addEventListener('change', (e) => state.settings.stereo = e.target.checked);
document.getElementById('normalizeCheck').addEventListener('change', (e) => state.settings.normalize = e.target.checked);
const updateEqLabel = (id, val) => { const v = parseFloat(val); document.getElementById(id).textContent = (v > 0 ? '+' : '') + v + 'dB'; };
document.getElementById('noiseLevel').addEventListener('input', (e) => {
state.settings.noiseLevel = parseInt(e.target.value, 10);
document.getElementById('noiseLevelValue').textContent = e.target.value + '%';
if (state.dfNetProc && state.liveCtx) state.dfNetProc.noiseReductionLevel = state.settings.noiseLevel;
});
document.getElementById('eqBass').addEventListener('input', (e) => {
state.settings.bass = parseFloat(e.target.value); updateEqLabel('bassVal', e.target.value);
if(state.liveNodes.bass) state.liveNodes.bass.gain.value = state.settings.bass;
});
document.getElementById('eqTreble').addEventListener('input', (e) => {
state.settings.treble = parseFloat(e.target.value); updateEqLabel('trebleVal', e.target.value);
if(state.liveNodes.treble) state.liveNodes.treble.gain.value = state.settings.treble;
});
document.getElementById('eqGain').addEventListener('input', (e) => {
state.settings.gain = parseFloat(e.target.value); updateEqLabel('gainVal', e.target.value);
if(state.liveNodes.gain) state.liveNodes.gain.gain.value = Math.pow(10, state.settings.gain / 20);
});
document.getElementById('resetNoise').onclick = () => {
state.settings.noiseLevel = 100; document.getElementById('noiseLevel').value = 100;
document.getElementById('noiseLevelValue').textContent = '100%';
if (state.dfNetProc && state.liveCtx) state.dfNetProc.noiseReductionLevel = 100;
};
document.getElementById('resetBass').onclick = () => {
state.settings.bass = 0; document.getElementById('eqBass').value = 0; updateEqLabel('bassVal', 0);
if(state.liveNodes.bass) state.liveNodes.bass.gain.value = 0;
};
document.getElementById('resetTreble').onclick = () => {
state.settings.treble = 0; document.getElementById('eqTreble').value = 0; updateEqLabel('trebleVal', 0);
if(state.liveNodes.treble) state.liveNodes.treble.gain.value = 0;
};
document.getElementById('resetGain').onclick = () => {
state.settings.gain = 0; document.getElementById('eqGain').value = 0; updateEqLabel('gainVal', 0);
if(state.liveNodes.gain) state.liveNodes.gain.gain.value = 1;
};
const formatWav = document.getElementById('formatWav');
const formatMp3 = document.getElementById('formatMp3');
formatWav.onclick = () => { state.settings.format = 'wav'; formatWav.className = 'px-3 py-1.5 text-xs font-bold rounded-md bg-primary-600 text-white transition-all shadow-sm'; formatMp3.className = 'px-3 py-1.5 text-xs font-bold rounded-md text-slate-500 dark:text-slate-400 hover:text-slate-800 dark:hover:text-white transition-all'; };
formatMp3.onclick = () => { state.settings.format = 'mp3'; formatMp3.className = 'px-3 py-1.5 text-xs font-bold rounded-md bg-primary-600 text-white transition-all shadow-sm'; formatWav.className = 'px-3 py-1.5 text-xs font-bold rounded-md text-slate-500 dark:text-slate-400 hover:text-slate-800 dark:hover:text-white transition-all'; };
// --- DRAG & DROP LOGIC ---
['dragenter', 'dragover', 'dragleave', 'drop'].forEach(e => UI.dropzone.addEventListener(e, ev => { ev.preventDefault(); ev.stopPropagation(); }, false));
['dragenter', 'dragover'].forEach(e => UI.dropzone.addEventListener(e, () => UI.dropzone.classList.add('drag-active'), false));
['dragleave', 'drop'].forEach(e => UI.dropzone.addEventListener(e, () => UI.dropzone.classList.remove('drag-active'), false));
UI.dropzone.addEventListener('drop', (e) => handleFiles(e.dataTransfer.files));
UI.dropzone.addEventListener('click', () => UI.fileInput.click());
UI.fileInput.addEventListener('change', (e) => handleFiles(e.target.files));
UI.clearAllBtn.onclick = () => {
state.files = []; state.activeId = null;
UI.workspaceActive.classList.add('hidden'); UI.workspaceEmpty.classList.remove('hidden');
if (state.wavesurfer) { state.wavesurfer.destroy(); state.wavesurfer = null; }
UI.fileInput.value = ''; renderQueue(); teardownLivePipeline();
};
document.addEventListener('keydown', (e) => {
if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') return;
if (!state.activeId) return;
switch(e.code) {
case 'Space': e.preventDefault(); if (state.wavesurfer) state.wavesurfer.playPause(); break;
case 'ArrowLeft': e.preventDefault(); if (state.wavesurfer) state.wavesurfer.skip(-5); break;
case 'ArrowRight': e.preventDefault(); if (state.wavesurfer) state.wavesurfer.skip(5); break;
case 'Delete': case 'Backspace': e.preventDefault(); removeFile(state.activeId); break;
}
});
// --- FILE HANDLING & QUEUE ---
function handleFiles(files) {
let added = false;
for (let f of files) {
const ext = f.name.substring(f.name.lastIndexOf('.')).toLowerCase();
const validExts = ['.mp3', '.wav', '.ogg', '.aac', '.m4a', '.flac', '.wma', '.aiff', '.mp4'];
if (!f.type.startsWith('audio/') && !f.type.startsWith('video/') && !validExts.includes(ext)) {
console.warn('Skipped non-audio file:', f.name);
continue;
}
const id = 'f_' + Date.now() + Math.random().toString(36).substr(2, 5);
state.files.push({
id, file: f, name: f.name, size: f.size, originalUrl: URL.createObjectURL(f),
cleanedUrl: null, status: 'pending', duration: 0, startTrim: 0, endTrim: 0
});
added = true;
}
if (added) {
renderQueue();
if (!state.activeId && state.files.length > 0) selectFile(state.files[0].id);
}
}
function renderQueue() {
UI.fileList.innerHTML = '';
UI.queueCount.textContent = `${state.files.length} file${state.files.length !== 1 ? 's' : ''}`;
if (state.files.length > 0) {
UI.dropzoneActions.classList.remove('hidden');
UI.dropzoneIndicatorText.textContent = `${state.files.length} file(s) ready`;
UI.dropzone.classList.replace('border-slate-300', 'border-primary-400');
UI.dropzone.classList.replace('dark:border-slate-600', 'dark:border-primary-500');
UI.dropzone.classList.add('bg-primary-50/50', 'dark:bg-primary-900/20');
UI.dropzoneIcon.classList.replace('text-slate-400', 'text-primary-500');
} else {
UI.dropzoneActions.classList.add('hidden');
UI.dropzone.classList.replace('border-primary-400', 'border-slate-300');
UI.dropzone.classList.replace('dark:border-primary-500', 'dark:border-slate-600');
UI.dropzone.classList.remove('bg-primary-50/50', 'dark:bg-primary-900/20');
UI.dropzoneIcon.classList.replace('text-primary-500', 'text-slate-400');
UI.fileList.innerHTML = '<div class="p-4 text-center text-slate-400 dark:text-slate-500 text-sm italic empty-state">Queue is empty.</div>';
}
state.files.forEach(item => {
const el = document.createElement('div');
const isActive = item.id === state.activeId;
let icon = '<i data-lucide="clock" class="w-4 h-4 text-slate-400"></i>';
if(item.status === 'processing') icon = '<i data-lucide="loader-2" class="w-4 h-4 text-primary-500 spinner"></i>';
if(item.status === 'done') icon = '<i data-lucide="check-circle-2" class="w-4 h-4 text-emerald-500 dark:text-emerald-400"></i>';
el.className = `p-3 rounded-lg flex items-center justify-between cursor-pointer border transition-all ${isActive ? 'bg-primary-50 dark:bg-primary-900/20 border-primary-500/50' : 'bg-white dark:bg-slate-900 border-slate-200 dark:border-slate-700 hover:border-slate-300 dark:hover:border-slate-500'}`;
el.innerHTML = `
<div class="flex items-center gap-3 overflow-hidden">${icon}<span class="text-sm truncate text-slate-700 dark:text-slate-200 ${isActive ? 'font-semibold' : ''}">${item.name}</span></div>
<button class="p-1 text-slate-400 hover:text-red-500 dark:hover:text-red-400 remove-btn transition-colors" data-id="${item.id}"><i data-lucide="x" class="w-4 h-4"></i></button>
`;
el.onclick = (e) => { if(!e.target.closest('.remove-btn')) selectFile(item.id); };
el.querySelector('.remove-btn').onclick = () => removeFile(item.id);
UI.fileList.appendChild(el);
});
updateProcessButtonText();
const doneCount = state.files.filter(f => f.status === 'done').length;
UI.downloadZipBtn.classList.toggle('hidden', doneCount < 1);
}
function removeFile(id) {
state.files = state.files.filter(f => f.id !== id);
if (state.activeId === id) {
state.activeId = null;
UI.workspaceActive.classList.add('hidden');
UI.workspaceEmpty.classList.remove('hidden');
if (state.wavesurfer) state.wavesurfer.destroy();
state.wavesurfer = null;
teardownLivePipeline();
}
renderQueue();
}
// --- WORKSPACE, LIVE PREVIEW & WAVESURFER ---
async function selectFile(id) {
state.activeId = id; renderQueue();
const item = state.files.find(f => f.id === id);
UI.workspaceEmpty.classList.add('hidden');
UI.workspaceActive.classList.remove('hidden');
UI.activeFileName.textContent = item.name;
if (item.status === 'done') {
UI.btnPreview.classList.add('hidden');
UI.btnCleaned.classList.remove('opacity-50', 'cursor-not-allowed', 'text-slate-400', 'dark:text-slate-600');
UI.btnCleaned.classList.add('text-slate-500', 'dark:text-slate-400', 'hover:text-slate-800', 'dark:hover:text-white');
UI.btnCleaned.disabled = false;
UI.btnCleaned.title = "Play the final baked output";
UI.downloadSingleBtn.classList.remove('hidden');
setPlaybackMode('cleaned', item);
} else {
UI.btnPreview.classList.remove('hidden');
UI.btnCleaned.classList.remove('text-slate-500', 'dark:text-slate-400', 'hover:text-slate-800', 'dark:hover:text-white');
UI.btnCleaned.classList.add('opacity-50', 'cursor-not-allowed', 'text-slate-400', 'dark:text-slate-600');
UI.btnCleaned.disabled = true;
UI.btnCleaned.title = "Must Process first to unlock the final baked file";
UI.downloadSingleBtn.classList.add('hidden');
setPlaybackMode('original', item);
}
initWavesurfer(item);
}
function initWavesurfer(item) {
if (state.wavesurfer) state.wavesurfer.destroy();
setProcessButtonState(true, "Loading Audio...");
const isMassive = item.size > 15 * 1024 * 1024;
const plugins = [];
const specContainer = document.getElementById('spectrogram');
if (!isMassive) {
specContainer.innerHTML = '';
plugins.push(
Spectrogram.create({
container: '#spectrogram',
labels: true,
height: 80,
splitChannels: false
})
);
} else {
specContainer.innerHTML = '<div class="flex items-center justify-center h-20 text-xs text-slate-500 bg-slate-900/10 dark:bg-slate-900/40 border border-dashed border-slate-300 dark:border-slate-700 rounded-lg mx-2 mb-2">Spectrogram disabled for massive files to prevent browser memory crash.</div>';
}
state.wavesurfer = WaveSurfer.create({
container: '#waveform', waveColor: '#94a3b8', progressColor: '#8b5cf6',
cursorColor: '#a78bfa', barWidth: 2, barGap: 1, barRadius: 2, height: 100, normalize: true,
plugins: plugins
});
const loadUrl = state.playbackMode === 'cleaned' ? item.cleanedUrl : item.originalUrl;
state.wavesurfer.load(loadUrl);
UI.zoomSlider.value = 0;
state.wavesurfer.on('ready', () => {
setProcessButtonState(false);
const duration = state.wavesurfer.getDuration();
if (item.duration === 0) { item.duration = duration; item.endTrim = duration; }
UI.trimStart.max = duration; UI.trimEnd.max = duration;
UI.trimStart.value = item.startTrim.toFixed(1); UI.trimEnd.value = item.endTrim.toFixed(1);
updateTimeDisplay();
UI.iconPlayWrap.classList.replace('hidden', 'flex');
UI.iconPauseWrap.classList.replace('flex', 'hidden');
});
state.wavesurfer.on('audioprocess', updateTimeDisplay);
state.wavesurfer.on('seek', updateTimeDisplay);
state.wavesurfer.on('play', () => { UI.iconPlayWrap.classList.replace('flex', 'hidden'); UI.iconPauseWrap.classList.replace('hidden', 'flex'); });
state.wavesurfer.on('pause', () => { UI.iconPauseWrap.classList.replace('flex', 'hidden'); UI.iconPlayWrap.classList.replace('hidden', 'flex'); });
}
UI.zoomSlider.addEventListener('input', (e) => {
if (state.wavesurfer) state.wavesurfer.zoom(Number(e.target.value));
});
function updateTimeDisplay() {
if(!state.wavesurfer) return;
const cur = state.wavesurfer.getCurrentTime(), tot = state.wavesurfer.getDuration() || 0;
UI.timeDisplay.textContent = `${formatTime(cur)} / ${formatTime(tot)}`;
const item = state.files.find(f => f.id === state.activeId);
if(item && item.status === 'pending') {
if (cur > item.endTrim && state.wavesurfer.isPlaying()) {
state.wavesurfer.pause(); state.wavesurfer.setTime(item.startTrim);
}
}
}
function formatTime(sec) { const m = Math.floor(sec / 60), s = Math.floor(sec % 60); return `${m.toString().padStart(2, '0')}:${s.toString().padStart(2, '0')}`; }
UI.playBtn.onclick = () => state.wavesurfer && state.wavesurfer.playPause();
document.getElementById('setStartBtn').onclick = () => { if(state.wavesurfer){ UI.trimStart.value = state.wavesurfer.getCurrentTime().toFixed(1); saveTrim(); }};
document.getElementById('setEndBtn').onclick = () => { if(state.wavesurfer){ UI.trimEnd.value = state.wavesurfer.getCurrentTime().toFixed(1); saveTrim(); }};
UI.trimStart.onchange = saveTrim; UI.trimEnd.onchange = saveTrim;
function saveTrim() {
const item = state.files.find(f => f.id === state.activeId);
if(!item || item.status !== 'pending') return;
let start = parseFloat(UI.trimStart.value) || 0, end = parseFloat(UI.trimEnd.value) || item.duration;
if(start < 0) start = 0; if(end > item.duration) end = item.duration; if(start >= end) start = end - 0.1;
UI.trimStart.value = start.toFixed(1); UI.trimEnd.value = end.toFixed(1);
item.startTrim = start; item.endTrim = end;
}
// Live Preview Routing Logic
async function setupLivePipeline() {
if (!state.liveCtx) {
state.liveCtx = new (window.AudioContext || window.webkitAudioContext)({ sampleRate: 16000 });
state.liveNodes = {};
}
if (state.liveCtx.state === 'suspended') await state.liveCtx.resume();
const mediaElt = state.wavesurfer.getMediaElement();
if (!mediaElt.audioNodeMap) {
state.mediaNode = state.liveCtx.createMediaElementSource(mediaElt);
mediaElt.audioNodeMap = state.mediaNode;
} else {
state.mediaNode = mediaElt.audioNodeMap;
}
state.mediaNode.disconnect();
if(state.liveNodes.dfNode) state.liveNodes.dfNode.disconnect();
if(state.liveNodes.dcBlock) state.liveNodes.dcBlock.disconnect();
if(state.liveNodes.bass) state.liveNodes.bass.disconnect();
if(state.liveNodes.treble) state.liveNodes.treble.disconnect();
if(state.liveNodes.gain) state.liveNodes.gain.disconnect();
state.liveNodes.dfNode = await state.dfNetProc.createAudioWorkletNode(state.liveCtx);
// FIX: DC Offset Blocker Highpass filter to prevent AI popping and rumbling
state.liveNodes.dcBlock = state.liveCtx.createBiquadFilter();
state.liveNodes.dcBlock.type = 'highpass';
state.liveNodes.dcBlock.frequency.value = 40;
state.liveNodes.bass = state.liveCtx.createBiquadFilter(); state.liveNodes.bass.type = 'lowshelf'; state.liveNodes.bass.frequency.value = 250; state.liveNodes.bass.gain.value = state.settings.bass;
state.liveNodes.treble = state.liveCtx.createBiquadFilter(); state.liveNodes.treble.type = 'highshelf'; state.liveNodes.treble.frequency.value = 4000; state.liveNodes.treble.gain.value = state.settings.treble;
state.liveNodes.gain = state.liveCtx.createGain(); state.liveNodes.gain.gain.value = Math.pow(10, state.settings.gain / 20);
state.mediaNode.connect(state.liveNodes.dfNode);
state.liveNodes.dfNode.connect(state.liveNodes.dcBlock);
state.liveNodes.dcBlock.connect(state.liveNodes.bass);
state.liveNodes.bass.connect(state.liveNodes.treble);
state.liveNodes.treble.connect(state.liveNodes.gain);
state.liveNodes.gain.connect(state.liveCtx.destination);
}
function teardownLivePipeline() {
if (state.mediaNode && state.liveCtx) {
state.mediaNode.disconnect();
state.mediaNode.connect(state.liveCtx.destination);
}
}
// A/B/Live Toggle Logic
UI.btnOriginal.onclick = () => setPlaybackMode('original', state.files.find(f=>f.id===state.activeId));
UI.btnPreview.onclick = () => setPlaybackMode('preview', state.files.find(f=>f.id===state.activeId));
UI.btnCleaned.onclick = () => { if(!UI.btnCleaned.disabled) setPlaybackMode('cleaned', state.files.find(f=>f.id===state.activeId)); };
async function setPlaybackMode(mode, item) {
if (!item || !state.wavesurfer) return;
state.playbackMode = mode;
const baseClass = 'px-4 py-1.5 text-xs font-bold rounded-md transition-all shadow-sm ';
const activeClass = 'bg-white dark:bg-slate-700 text-slate-800 dark:text-white';
const inactiveClass = 'text-slate-500 dark:text-slate-400 hover:text-slate-800 dark:hover:text-white';
UI.btnOriginal.className = baseClass + (mode === 'original' ? activeClass : inactiveClass);
UI.btnPreview.className = baseClass + (mode === 'preview' ? 'bg-fuchsia-600 text-white' : inactiveClass);
if (item.status === 'done') {
UI.btnCleaned.className = baseClass + (mode === 'cleaned' ? 'bg-primary-600 text-white' : inactiveClass);
}
if (mode === 'original') state.wavesurfer.setOptions({ waveColor: '#94a3b8', progressColor: '#cbd5e1' });
else if (mode === 'preview') state.wavesurfer.setOptions({ waveColor: '#d946ef', progressColor: '#fdf4ff' });
else if (mode === 'cleaned') state.wavesurfer.setOptions({ waveColor: '#4c1d95', progressColor: '#8b5cf6' });
const curTime = state.wavesurfer.getCurrentTime();
const wasPlaying = state.wavesurfer.isPlaying();
if (wasPlaying) state.wavesurfer.pause();
try {
if (mode === 'preview') {
await setupLivePipeline();
if(state.wavesurfer.getMediaElement().src !== item.originalUrl) await state.wavesurfer.load(item.originalUrl);
} else {
teardownLivePipeline();
const targetUrl = mode === 'cleaned' ? item.cleanedUrl : item.originalUrl;
if(state.wavesurfer.getMediaElement().src !== targetUrl) await state.wavesurfer.load(targetUrl);
}
state.wavesurfer.setTime(curTime);
if(wasPlaying) state.wavesurfer.play();
} catch(e) {
console.error(e);
alert("Could not switch playback mode.");
}
}
// --- OFFLINE PROCESSING ENGINE ---
UI.processBtn.onclick = async () => {
const pending = state.files.filter(f => f.status === 'pending');
if (pending.length === 0) return;
setProcessButtonState(true, "Preparing Hush AI...");
// FIX: Decode at native rate to prevent browser-side Aliasing/Static during downsampling!
const nativeAudioCtx = new (window.AudioContext || window.webkitAudioContext)();
try {
for (let i = 0; i < pending.length; i++) {
const item = pending[i]; item.status = 'processing'; renderQueue();
const tag = `(${i+1}/${pending.length})`;
// FIX: Isolate WASM instances inside the loop so RNN State does NOT leak between files
const offlineProcL = new state.ProcessorClass({ sampleRate: 16000, noiseReductionLevel: state.settings.noiseLevel, assetConfig: state.assetConfigObj });
await offlineProcL.initialize();
let offlineProcR = null;
if (state.settings.stereo) {
offlineProcR = new state.ProcessorClass({ sampleRate: 16000, noiseReductionLevel: state.settings.noiseLevel, assetConfig: state.assetConfigObj });
await offlineProcR.initialize();
}
setProcessButtonState(true, `Decoding Audio ${tag}...`);
await new Promise(r => setTimeout(r, 10)); // Force paint
const arrayBuffer = await item.file.arrayBuffer();
let decodedBuffer = await nativeAudioCtx.decodeAudioData(arrayBuffer);
const nativeRate = decodedBuffer.sampleRate; // Read the actual file's sample rate
if (item.endTrim > 0 && (item.startTrim > 0 || item.endTrim < decodedBuffer.duration)) {
const startSample = Math.floor(item.startTrim * nativeRate);
let endSample = Math.floor(item.endTrim * nativeRate);
if (endSample > decodedBuffer.length) endSample = decodedBuffer.length;
const len = endSample - startSample;
const trimmed = nativeAudioCtx.createBuffer(decodedBuffer.numberOfChannels, len, nativeRate);
for(let c=0; c<decodedBuffer.numberOfChannels; c++) {
trimmed.copyToChannel(decodedBuffer.getChannelData(c).subarray(startSample, endSample), c);
}
decodedBuffer = trimmed;
}
const isStereoFile = decodedBuffer.numberOfChannels > 1;
const processStereo = state.settings.stereo && isStereoFile;
const channels = processStereo ? 2 : 1;
// OfflineAudioContext automatically performs high-fidelity, safe downsampling from nativeRate to 16000
const renderLen = Math.ceil(decodedBuffer.duration * 16000);
const offlineCtx = new OfflineAudioContext(channels, renderLen, 16000);
const sourceNode = offlineCtx.createBufferSource();
let pipelineTail = null;
if (processStereo) {
sourceNode.buffer = decodedBuffer;
const splitter = offlineCtx.createChannelSplitter(2);
const merger = offlineCtx.createChannelMerger(2);
sourceNode.connect(splitter);
const dfNodeL = await offlineProcL.createAudioWorkletNode(offlineCtx);
const dfNodeR = await offlineProcR.createAudioWorkletNode(offlineCtx);
splitter.connect(dfNodeL, 0, 0);
splitter.connect(dfNodeR, 1, 0);
dfNodeL.connect(merger, 0, 0);
dfNodeR.connect(merger, 0, 1);
pipelineTail = merger;
} else {
if (isStereoFile) {
const mono = offlineCtx.createBuffer(1, decodedBuffer.length, nativeRate);
const data = mono.getChannelData(0), left = decodedBuffer.getChannelData(0), right = decodedBuffer.getChannelData(1);
for (let j = 0; j < decodedBuffer.length; j++) data[j] = (left[j] + right[j]) / 2;
decodedBuffer = mono;
}
sourceNode.buffer = decodedBuffer;
const dfNode = await offlineProcL.createAudioWorkletNode(offlineCtx);
sourceNode.connect(dfNode);
pipelineTail = dfNode;
}
// FIX: DC Offset Blocker removes the inaudible pressure wave that causes normalization failure and distortion
const dcBlocker = offlineCtx.createBiquadFilter();
dcBlocker.type = 'highpass';
dcBlocker.frequency.value = 40;
const bassEq = offlineCtx.createBiquadFilter(); bassEq.type = 'lowshelf'; bassEq.frequency.value = 250; bassEq.gain.value = state.settings.bass;
const trebleEq = offlineCtx.createBiquadFilter(); trebleEq.type = 'highshelf'; trebleEq.frequency.value = 4000; trebleEq.gain.value = state.settings.treble;
const gainNode = offlineCtx.createGain(); gainNode.gain.value = Math.pow(10, state.settings.gain / 20) * 0.5;
pipelineTail.connect(dcBlocker);
dcBlocker.connect(bassEq);
bassEq.connect(trebleEq);
trebleEq.connect(gainNode);
gainNode.connect(offlineCtx.destination);
offlineCtx.suspend(0.1).then(() => { setTimeout(() => offlineCtx.resume(), 100); });
const dur = decodedBuffer.duration;
const interval = Math.max(5, dur / 100);
for (let t = Math.ceil(interval); t < dur; t += interval) {
offlineCtx.suspend(t).then(async () => {
const pct = Math.round((t / dur) * 100);
setProcessButtonState(true, `Cleaning ${tag} - ${pct}%`);
await new Promise(r => setTimeout(r, 0));
offlineCtx.resume();
});
}
sourceNode.start(0);
const renderedBuffer = await offlineCtx.startRendering();
if (state.settings.normalize) {
for(let c=0; c<renderedBuffer.numberOfChannels; c++) {
const dat = renderedBuffer.getChannelData(c);
let max = 0;
for(let j=0; j<dat.length; j++) { if(Math.abs(dat[j]) > max) max = Math.abs(dat[j]); }
if (max > 0) { const multiplier = 0.95 / max; for(let j=0; j<dat.length; j++) dat[j] *= multiplier; }
}
}
let outBlob;
if (state.settings.format === 'mp3') {
outBlob = await encodeToMP3(renderedBuffer, (p) => {
setProcessButtonState(true, `Encoding MP3 ${tag} - ${Math.round(p * 100)}%`);
});
} else {
outBlob = await audioBufferToWav(renderedBuffer, (p) => {
setProcessButtonState(true, `Saving WAV ${tag} - ${Math.round(p * 100)}%`);
});
}
item.cleanedUrl = URL.createObjectURL(outBlob); item.blob = outBlob; item.status = 'done';
decodedBuffer = null;
}
setProcessButtonState(false); renderQueue();
if(state.activeId) selectFile(state.activeId);
} catch (err) {
console.error(err); alert("An error occurred during processing. The file may be too large for browser memory limits."); setProcessButtonState(false);
} finally {
if (nativeAudioCtx.state !== 'closed') nativeAudioCtx.close();
}
};
// --- HIGH-PERFORMANCE ASYNC ENCODERS ---
async function audioBufferToWav(buffer, onProgress) {
const numOfChan = buffer.numberOfChannels, len = buffer.length * numOfChan * 2 + 44;
const view = new DataView(new ArrayBuffer(len)), channels = [];
let offset = 0, pos = 0;
const setU16 = d => { view.setUint16(offset, d, true); offset += 2; };
const setU32 = d => { view.setUint32(offset, d, true); offset += 4; };
const setI16 = d => { view.setInt16(offset, d, true); offset += 2; };
setU32(0x46464952); setU32(len - 8); setU32(0x45564157); setU32(0x20746d66); setU32(16); setU16(1); setU16(numOfChan);
setU32(buffer.sampleRate); setU32(buffer.sampleRate * 2 * numOfChan); setU16(numOfChan * 2); setU16(16); setU32(0x61746164); setU32(len - pos - 4);
for(let i=0; i<numOfChan; i++) channels.push(buffer.getChannelData(i));
const chunk = buffer.sampleRate * 5;
while(pos < buffer.length) {
let end = Math.min(pos + chunk, buffer.length);
while(pos < end) {
for(let i=0; i<numOfChan; i++) {
let s = Math.max(-1, Math.min(1, channels[i][pos]));
setI16(s < 0 ? s * 0x8000 : s * 0x7FFF);
}
pos++;
}
if(onProgress) onProgress(pos / buffer.length);
await new Promise(r => setTimeout(r, 0));
}
return new Blob([view.buffer], { type: "audio/wav" });
}
async function encodeToMP3(audioBuffer, onProgress) {
const encoder = new lamejs.Mp3Encoder(1, audioBuffer.sampleRate, 192);
const samples = audioBuffer.getChannelData(0);
const mp3Data = [];
const blockSize = 11520;
const chunkBuffer = new Int16Array(blockSize);
for (let i = 0; i < samples.length; i += blockSize) {
const end = Math.min(i + blockSize, samples.length);
const view = chunkBuffer.subarray(0, end - i);
for (let j = 0; j < view.length; j++) {
let s = samples[i + j];
s = Math.max(-1, Math.min(1, s));
view[j] = s < 0 ? s * 0x8000 : s * 0x7FFF;
}
const buf = encoder.encodeBuffer(view);
if (buf.length > 0) mp3Data.push(buf);
if (i % (audioBuffer.sampleRate * 3) < blockSize) {
if(onProgress) onProgress(i / samples.length);
await new Promise(r => setTimeout(r, 0));
}
}
const flush = encoder.flush(); if (flush.length > 0) mp3Data.push(flush);
return new Blob(mp3Data, { type: 'audio/mp3' });
}
// --- DOWNLOAD ACTIONS ---
UI.downloadSingleBtn.onclick = () => {
const item = state.files.find(f => f.id === state.activeId);
if(!item || !item.cleanedUrl) return;
const ext = state.settings.format === 'mp3' ? '.mp3' : '.wav';
const a = document.createElement('a'); a.href = item.cleanedUrl; a.download = `Hush_Cleaned_${item.name.replace(/\.[^/.]+$/, "")}${ext}`; a.click();
};
UI.downloadZipBtn.onclick = async () => {
const doneFiles = state.files.filter(f => f.status === 'done');
if(doneFiles.length === 0) return;
const oldHtml = UI.downloadZipBtn.innerHTML;
UI.downloadZipBtn.disabled = true;
UI.downloadZipBtn.innerHTML = `<i data-lucide="loader-2" class="w-4 h-4 spinner"></i> Zipping...`;
lucide.createIcons();
await new Promise(r => setTimeout(r, 10));
const zip = new JSZip(); const ext = state.settings.format === 'mp3' ? '.mp3' : '.wav';
doneFiles.forEach(f => { zip.file(`Hush_Cleaned_${f.name.replace(/\.[^/.]+$/, "")}${ext}`, f.blob); });
const content = await zip.generateAsync({type:"blob"});
UI.downloadZipBtn.disabled = false;
UI.downloadZipBtn.innerHTML = oldHtml;
lucide.createIcons();
const a = document.createElement('a'); a.href = URL.createObjectURL(content); a.download = "HushAI_Batch.zip"; a.click();
};
</script>
</body>
</html> |