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Fix int16 audio overflow in ASR Gradio demo #383

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Fix int16 audio overflow in ASR Gradio demo #383

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6 changes: 4 additions & 2 deletions demo/vibevoice_asr_gradio_demo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -295,7 +295,8 @@ def clip_and_encode_audio(
sr = target_sr

# Convert float32 audio to int16 for encoding
segment_data_int16 = (segment_data * 32768.0).astype(np.int16)
# Use 32767.0 instead of 32768.0 to avoid potential overflow
segment_data_int16 = np.clip(segment_data * 32767.0, -32767, 32767).astype(np.int16)

# Convert to MP3 if pydub is available and use_mp3 is True
if use_mp3 and HAS_PYDUB:
Expand Down Expand Up @@ -488,7 +489,8 @@ def slice_audio_to_temp(
segment = audio_data[start_idx:end_idx]
temp_file = tempfile.NamedTemporaryFile(delete=False, suffix=".wav")
temp_file.close()
segment_int16 = (segment * 32768.0).astype(np.int16)
# Use 32767.0 instead of 32768.0 to avoid potential overflow
segment_int16 = np.clip(segment * 32767.0, -32767, 32767).astype(np.int16)
sf.write(temp_file.name, segment_int16, sample_rate, subtype='PCM_16')
return temp_file.name, None

Expand Down