fix custom send audio func

app.py

@@ -86,6 +86,7 @@ def convert_to_audio_segment(input_audio):
 
 
 def send_audio(audio_segment: AudioSegment):
+    logger.info("now processing output")
     sampling_rate = DEFAULT_SAMPLING_RATE
     stream = sd.OutputStream(
         channels=1,
@@ -96,7 +97,7 @@ def send_audio(audio_segment: AudioSegment):
     raw_data = audio_segment.raw_data
     if audio_segment.frame_rate != sampling_rate:
         raw_data = audio_segment.set_frame_rate(sampling_rate).raw_data
-    stream.write(np.frombuffer(raw_data, dtype=np.int16))
+    return stream.write(np.frombuffer(raw_data, dtype=np.int16))
 
 
 def main(input_audio):