Update app.py

app.py

@@ -4,6 +4,7 @@ from fastapi import FastAPI, UploadFile, File, HTTPException
 import torch
 import torch.nn as nn
 import torchaudio
+import soundfile  # noqa: F401  — diperlukan sebagai backend torchaudio
 import numpy as np
 
 app = FastAPI()
@@ -64,7 +65,7 @@ except Exception as e:
 # =============== AUDIO PREPROCESSING ==================
 def load_and_preprocess_audio(file_path):
     # Load audio
-    waveform, sample_rate = torchaudio.load(file_path)
+    waveform, sample_rate = torchaudio.load(file_path, backend="soundfile")
     
     # Konversi ke Mono jika Stereo
     if waveform.shape[0] > 1: