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When using USB Audio, occured "Invalid sample rate" Error

pyaudio_audio_signal_processing_training/pyaudio_Plot_TimeWave_and_FreqResponse_of_Microphone-Input.py

Lines 41 to 42 in eda5109

    
           else:                   # リアルタイムモード向け 
        
               samplerate = int(44100 / 4)

マイク入力デバイスとして、UAC 1.0 Microphone & HID-Mediak: USB Audio (hw:2,0) ( IN-Ch: 2 / OUT-Ch: 0 )を選択した場合、OSError: [Errno -9997] Invalid sample rateが発生する。

Traceback (most recent call last):
  File "/home/vinlandmbit/sound_source_localization/pyaudio_audio_signal_processing_training/pyaudio_Plot_TimeWave_and_FreqResponse_of_Microphone-Input.py", line 97, in <module>
    pa, stream = audio_stream_start(
                 ^^^^^^^^^^^^^^^^^^^
  File "/home/vinlandmbit/sound_source_localization/pyaudio_audio_signal_processing_training/modules/audio_stream.py", line 17, in audio_stream_start
    stream = pa.open(
             ^^^^^^^^
  File "/home/vinlandmbit/sound_source_localization/pyaudio_audio_signal_processing_training/.venv/lib/python3.11/site-packages/pyaudio/__init__.py", line 639, in open
    stream = PyAudio.Stream(self, *args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vinlandmbit/sound_source_localization/pyaudio_audio_signal_processing_training/.venv/lib/python3.11/site-packages/pyaudio/__init__.py", line 441, in __init__
    self._stream = pa.open(**arguments)
                   ^^^^^^^^^^^^^^^^^^^^
OSError: [Errno -9997] Invalid sample rate

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