使用python从usb输入线程（麦克风）捕获一个音频样本

目前，我正在启动我的主程序，控制何时启动扬声器和麦克风线程。从那里，我还可以控制设备（usb耳机）上的静音/取消静音等。音频线程位于音频类中的单独文件中

这个代码有效。现在，它以预先设置的特定循环计数捕获音频样本。我更愿意在主程序请求时获取音频样本，但我在设置标志并在麦克风线程中检查它方面没有任何成功。我会得到pyaudio错误，比如溢出/下溢

如果有人能建议一种获取音频输入样本（麦克风数据）的技术，我将不胜感激。谢谢

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这种方法虽然有效，但有时会出现上溢/下溢问题，但一旦我将麦克风采样率设置为16kHz而不是默认值，这些问题就消失了。我稍微修改了代码，这样我就可以随时从主程序中获取样本，方法是使用全局标志var，mic循环会检查它是否应该获取样本

def openTheMic(self, **kwargs):
        # script can over-ride any value in the myAudio __init__
        print ("***in openTheMic ***")

        # picks up values passed by the test_script and maps them to myAudio class,
        # otherwise will use defaults set in class
        for (k,v) in kwargs.iteritems():
            #print("k = %s, v = %s" % (k,v))
            setattr(self, myAudio._map[k], v)

        stream = self.p.open(
            format = self.FORMAT,
            channels = self.CHANNELS,
            rate = self.RATE,
            input = True,
            output = True,
            frames_per_buffer = self.CHUNK
        )

        setMicThreadStartTime(time.time())
        print("time @ start of mic thread is: %s" % time.time())
        starttime = time.time()
        while myAudio.openTheMicThreadActive == True:            
            for i in range(0, 1200):
                data = stream.read(self.CHUNK)
                captureCount = 1000

                if i == captureCount:
                    currentData = data
                    # abort the mic and spkr threads
                    myAudio.openTheMicThreadActive = False
                    myAudio.playDeadAirThreadActive = False
                    print("i is: %i: " % (i))
                    # set a global variable to get the data to the main program
                    setAudioData(currentData)
                    print("capture time: i = %s, time is %s " % (i, time.time()))


        stream.stop_stream()
        stream.close()
        print ("***closed the stream in openTheMic *** and the time is: %s" % time.time())
        self.p.terminate()