python获得win10系统声音

首先，驾驶环境如下:

import pyaudio
p = pyaudio.PyAudio()
for i in range(p.get_device_count()):
    devInfo = p.get_device_info_by_index(i)
    #if devInfo['hostApi'] == 0:
    print(devInfo)
# {'index': 0, 'structVersion': 2, 'name': 'Microsoft 声音映射器 - Input', 'hostApi': 0, 'maxInputChannels': 2, 'maxOutputChannels': 0, 'defaultLowInputLatency': 0.09, 'defaultLowOutputLatency': 0.09, 'defaultHighInputLatency': 0.18, 'defaultHighOutputLatency': 0.18, 'defaultSampleRate': 44100.0}
# {'index': 1, 'structVersion': 2, 'name': '麦克风 (Realtek High Definition Au', 'hostApi': 0, 'maxInputChannels': 2, 'maxOutputChannels': 0, 'defaultLowInputLatency': 0.09, 'defaultLowOutputLatency': 0.09, 'defaultHighInputLatency': 0.18, 'defaultHighOutputLatency': 0.18, 'defaultSampleRate': 44100.0}
# {'index': 2, 'structVersion': 2, 'name': 'Microsoft 声音映射器 - Output', 'hostApi': 0, 'maxInputChannels': 0, 'maxOutputChannels': 2, 'defaultLowInputLatency': 0.09, 'defaultLowOutputLatency': 0.09, 'defaultHighInputLatency': 0.18, 'defaultHighOutputLatency': 0.18, 'defaultSampleRate': 44100.0}
# {'index': 3, 'structVersion': 2, 'name': '扬声器 (Realtek High Definition Au', 'hostApi': 0, 'maxInputChannels': 0, 'maxOutputChannels': 2, 'defaultLowInputLatency': 0.09, 'defaultLowOutputLatency': 0.09, 'defaultHighInputLatency': 0.18, 'defaultHighOutputLatency': 0.18, 'defaultSampleRate': 44100.0}
# {'index': 4, 'structVersion': 2, 'name': '主声音捕获驱动程序', 'hostApi': 1, 'maxInputChannels': 2, 'maxOutputChannels': 0, 'defaultLowInputLatency': 0.12, 'defaultLowOutputLatency': 0.0, 'defaultHighInputLatency': 0.24, 'defaultHighOutputLatency': 0.0, 'defaultSampleRate': 44100.0}
# {'index': 5, 'structVersion': 2, 'name': '麦克风 (Realtek High Definition Audio)', 'hostApi': 1, 'maxInputChannels': 2, 'maxOutputChannels': 0, 'defaultLowInputLatency': 0.12, 'defaultLowOutputLatency': 0.0, 'defaultHighInputLatency': 0.24, 'defaultHighOutputLatency': 0.0, 'defaultSampleRate': 44100.0}
# {'index': 6, 'structVersion': 2, 'name': '主声音驱动程序', 'hostApi': 1, 'maxInputChannels': 0, 'maxOutputChannels': 8, 'defaultLowInputLatency': 0.0, 'defaultLowOutputLatency': 0.12, 'defaultHighInputLatency': 0.0, 'defaultHighOutputLatency': 0.24, 'defaultSampleRate': 44100.0}
# {'index': 7, 'structVersion': 2, 'name': '扬声器 (Realtek High Definition Audio)', 'hostApi': 1, 'maxInputChannels': 0, 'maxOutputChannels': 2, 'defaultLowInputLatency': 0.0, 'defaultLowOutputLatency': 0.12, 'defaultHighInputLatency': 0.0, 'defaultHighOutputLatency': 0.24, 'defaultSampleRate': 44100.0}
# {'index': 8, 'structVersion': 2, 'name': 'Realtek ASIO', 'hostApi': 2, 'maxInputChannels': 2, 'maxOutputChannels': 2, 'defaultLowInputLatency': 0.023219954648526078, 'defaultLowOutputLatency': 0.023219954648526078, 'defaultHighInputLatency': 0.023219954648526078, 'defaultHighOutputLatency': 0.023219954648526078, 'defaultSampleRate': 44100.0}
# {'index': 9, 'structVersion': 2, 'name': '扬声器 (Realtek High Definition Audio)', 'hostApi': 3, 'maxInputChannels': 0, 'maxOutputChannels': 8, 'defaultLowInputLatency': 0.0, 'defaultLowOutputLatency': 0.003, 'defaultHighInputLatency': 0.0, 'defaultHighOutputLatency': 0.01, 'defaultSampleRate': 48000.0}
# {'index': 10, 'structVersion': 2, 'name': '麦克风 (Realtek High Definition Audio)', 'hostApi': 3, 'maxInputChannels': 8, 'maxOutputChannels': 0, 'defaultLowInputLatency': 0.003, 'defaultLowOutputLatency': 0.0, 'defaultHighInputLatency': 0.01, 'defaultHighOutputLatency': 0.0, 'defaultSampleRate': 48000.0}
# {'index': 11, 'structVersion': 2, 'name': '立体声混音 (Realtek HD Audio Stereo input)', 'hostApi': 4, 'maxInputChannels': 2, 'maxOutputChannels': 0, 'defaultLowInputLatency': 0.01, 'defaultLowOutputLatency': 0.01, 'defaultHighInputLatency': 0.04, 'defaultHighOutputLatency': 0.04, 'defaultSampleRate': 44100.0}
# {'index': 12, 'structVersion': 2, 'name': 'Speakers (Realtek HD Audio output)', 'hostApi': 4, 'maxInputChannels': 0, 'maxOutputChannels': 2, 'defaultLowInputLatency': 0.01, 'defaultLowOutputLatency': 0.01, 'defaultHighInputLatency': 0.04, 'defaultHighOutputLatency': 0.04, 'defaultSampleRate': 44100.0}
# {'index': 13, 'structVersion': 2, 'name': '麦克风 (Realtek HD Audio Mic input)', 'hostApi': 4, 'maxInputChannels': 2, 'maxOutputChannels': 0, 'defaultLowInputLatency': 0.01, 'defaultLowOutputLatency': 0.01, 'defaultHighInputLatency': 0.04, 'defaultHighOutputLatency': 0.04, 'defaultSampleRate': 44100.0}
# {'index': 14, 'structVersion': 2, 'name': 'SPDIF Out (Realtek HDA SPDIF Out)', 'hostApi': 4, 'maxInputChannels': 0, 'maxOutputChannels': 2, 'defaultLowInputLatency': 0.01, 'defaultLowOutputLatency': 0.01, 'defaultHighInputLatency': 0.04, 'defaultHighOutputLatency': 0.04, 'defaultSampleRate': 44100.0}

在这种情况下，只能接受麦克风声音，并且还有其他驱动程序（2个或4个被忘记）是蜂鸣声

然后我整个早上都在互联网上搜索，找到了方法

也就是说，扬声器取消垄断并开始立体声混响，然后python可以接收系统的音频信号

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