如何从现场应用程序中检测特定声音？

Question

有没有办法从应用程序（如chrome，mozilla）收集实时音频，并在网站上播放特定声音时执行一些代码？

Answer 1

如果您在使用的任何设备上都有麦克风，则可以使用它来读取从计算机发出的任何声音。然后，您可以将要录制的音频帧与要查找的声音的声音文件进行比较当然，这使得它非常容易受到背景噪音的影响，因此不知何故，您将不得不将其过滤掉。下面是使用 PyAudio 和 wave 库的示例：import pyaudioimport wavewf = wave.open("websitSound.wav", "rb")amountFrames = 100 # just an arbitrary number; could be anythingsframes = wf.readframes(amountFrames)currentSoundFrame = 0chunk = 1024  # Record in chunks of 1024 samplessample_format = pyaudio.paInt16  # 16 bits per samplechannels = 2fs = 44100  # Record at 44100 samples per secondseconds = 3p = pyaudio.PyAudio()  # Create an interface to PortAudiostream = p.open(format=sample_format,                channels=channels,                rate=fs,                frames_per_buffer=chunk,                input=True)# Store data in chunks for 3 secondsfor i in range(0, int(fs / chunk * seconds)):    data = stream.read(chunk)    if data == sframes[currentSoundFrame]:        currentSoundFrame += 1        if currentSoundFrame == len(sframes): #the whole entire sound was played            print("Sound was played!")    frames.append(data)# Stop and close the stream stream.stop_stream()stream.close()# Terminate the PortAudio interfacep.terminate()