Create app.py

app.py

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+import gradio as gr
+import numpy as np
+import librosa
+import soundfile as sf
+from scipy import signal
+import io
+
+def change_voice(audio, voice_preset, custom_pitch, custom_speed):
+    """
+    Transform voice with selected preset or custom settings
+    """
+    if audio is None:
+        return None, "Please record or upload audio first!"
+    
+    presets = {
+        "Sophia (Soft)": {"pitch": 1.5, "speed": 1.0},
+        "Emma (Professional)": {"pitch": 1.4, "speed": 1.1},
+        "Olivia (Young)": {"pitch": 1.7, "speed": 1.15},
+        "Ava (Mature)": {"pitch": 1.3, "speed": 0.95},
+        "Isabella (Sweet)": {"pitch": 1.6, "speed": 1.05},
+        "Mia (Dramatic)": {"pitch": 1.55, "speed": 0.9},
+        "Custom": {"pitch": custom_pitch, "speed": custom_speed}
+    }
+    
+    settings = presets[voice_preset]
+    pitch_factor = settings["pitch"]
+    speed_factor = settings["speed"]
+    
+    try:
+        sr, y = audio
+        
+        if y.dtype == np.int16:
+            y = y.astype(np.float32) / 32768.0
+        elif y.dtype == np.int32:
+            y = y.astype(np.float32) / 2147483648.0
+        
+        if len(y.shape) > 1:
+            y = np.mean(y, axis=1)
+        
+        y_shifted = librosa.effects.pitch_shift(y, sr=sr, n_steps=12 * np.log2(pitch_factor))
+        
+        if speed_factor != 1.0:
+            y_shifted = librosa.effects.time_stretch(y_shifted, rate=speed_factor)
+        
+        if pitch_factor > 1.2:
+            nyquist = sr / 2
+            formant_freqs = [800, 1150, 2900, 3900]
+            for freq in formant_freqs:
+                if freq < nyquist:
+                    b, a = signal.butter(2, [max(freq-100, 20)/nyquist, min(freq+100, nyquist-1)/nyquist], btype='band')
+                    filtered = signal.filtfilt(b, a, y_shifted)
+                    y_shifted = y_shifted + filtered * 0.1
+        
+        y_shifted = y_shifted / np.max(np.abs(y_shifted)) * 0.9
+        y_shifted = (y_shifted * 32768).astype(np.int16)
+        
+        message = f"✅ Voice transformed to {voice_preset}!\nPitch: {pitch_factor:.2f}x | Speed: {speed_factor:.2f}x"
+        return (sr, y_shifted), message
+        
+    except Exception as e:
+        return None, f"❌ Error processing audio: {str(e)}"
+
+with gr.Blocks(theme=gr.themes.Soft(primary_hue="pink")) as demo:
+    
+    gr.Markdown("""
+    # 🎤 Professional Voice Changer
+    ### Transform your voice with AI-powered female voice presets
+    """)
+    
+    with gr.Row():
+        with gr.Column(scale=1):
+            gr.Markdown("### 🎙️ Input Audio")
+            audio_input = gr.Audio(sources=["microphone", "upload"], type="numpy", label="Record or Upload Audio")
+            
+            gr.Markdown("### 🎵 Voice Settings")
+            voice_preset = gr.Radio(
+                choices=["Sophia (Soft)", "Emma (Professional)", "Olivia (Young)", "Ava (Mature)", "Isabella (Sweet)", "Mia (Dramatic)", "Custom"],
+                value="Sophia (Soft)",
+                label="Choose Voice Profile",
+                info="Select a preset or use Custom for manual control"
+            )
+            
+            with gr.Accordion("🎛️ Custom Settings", open=False):
+                custom_pitch = gr.Slider(minimum=1.0, maximum=2.0, value=1.5, step=0.1, label="Pitch Multiplier", info="Higher = More feminine")
+                custom_speed = gr.Slider(minimum=0.5, maximum=1.5, value=1.0, step=0.05, label="Speed Multiplier", info="Adjust speaking speed")
+            
+            transform_btn = gr.Button("✨ Transform Voice", variant="primary", size="lg")
+        
+        with gr.Column(scale=1):
+            gr.Markdown("### 🔊 Output Audio")
+            audio_output = gr.Audio(label="Transformed Voice", type="numpy")
+            status_output = gr.Textbox(label="Status", lines=3, interactive=False)
+            
+            gr.Markdown("""
+            ### 📝 Voice Profile Details
+            - **Sophia (Soft)**: Gentle and warm tone
+            - **Emma (Professional)**: Clear and confident
+            - **Olivia (Young)**: Energetic and bright
+            - **Ava (Mature)**: Deep and authoritative
+            - **Isabella (Sweet)**: Friendly and cheerful
+            - **Mia (Dramatic)**: Expressive and bold
+            - **Custom**: Set your own pitch and speed
+            """)
+    
+    transform_btn.click(fn=change_voice, inputs=[audio_input, voice_preset, custom_pitch, custom_speed], outputs=[audio_output, status_output])
+    
+    gr.Markdown("""
+    ---
+    ### 💡 Tips:
+    - 🎤 **Recording**: Speak clearly and at normal volume
+    - 📁 **Upload**: Supports WAV, MP3, and other audio formats
+    - 🎚️ **Pitch**: Range 1.0-2.0 (higher = more feminine)
+    - ⚡ **Speed**: Range 0.5-1.5 (adjust speaking pace)
+    - 💾 **Download**: Click the download button on the output audio player
+    """)
+
+if __name__ == "__main__":
+    demo.launch()