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import pyaudio
soundObj = pyaudio.PyAudio()

# Learn what your OS+Hardware can do

defaultCapability = soundObj.get_default_host_api_info()
print(defaultCapability)

# See if you can make it do what you want

isSupported = soundObj.is_format_supported(input_format=pyaudio.paInt8, input_channels=2, rate=22050, input_device=0)
print(isSupported)

我一直在犯以下错误，为什么？

{'index': 0, 
 'structVersion': 1, 
 'type': 2, 
 'name': 'MME', 
 'deviceCount': 2, 
 'defaultInputDevice': -1, 
 'defaultOutputDevice': 1}

Traceback (most recent call last):
  File "M:/Python Workspace/PycharmProjects/untitled/junk2.py", line 9, in <module>
    isSupported = soundObj.is_format_supported(input_format=pyaudio.paInt8, input_channels=2, rate=22050, input_device=0)
  File "C:\Users\clasq\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyaudio.py", line 937, in is_format_supported
    return pa.is_format_supported(rate,**kwargs)

ValueError: ('Invalid number of channels', -9998)