PyAudio 一次播放多个声音

问题描述

如何使用 PyAudio 将两种声音混合为一种.我浏览了整个互联网，但没有人回答这个问题.我也在考虑使用 audiolab 或 swMixer，但它们不支持 Python 3.4……我在考虑将它们的字节字符串转换为 numpy 数组，将其与另一个数组合并，然后再转换回字符串.这可能吗?

How can I mix two sounds with PyAudio into one. I browsed all over internet but nobody answered this question. I was also thinking about using audiolab or swMixer, but they dont support Python 3.4... I was thinking about converting they byte string into numpy array, merging it with another, and converting back to by string. Is that possible?

wf1 = wave.open("YYY.wav", 'rb')
wf1 = wave.open("XXX.wav", 'rb')

p = pyaudio.PyAudio()

def callback(in_data, frame_count, time_info, status):
    data1 = wf1.readframes(frame_count)
    data2 = wf2.readframes(frame_count)

    #Here i need to mix these two byte strings together

    return (data, pyaudio.paContinue)

你是我最后的希望，感谢您的任何提前！

You are my last hope, thank you for any advance!

推荐答案

我自己找到了解决方案，而且非常简单.所以我会在这里发布我的代码以帮助其他人:

I found the solution by myself and it was pretty simple. So I will post my code here to help others:

wf1 = wave.open("YYY.wav", 'rb')
wf1 = wave.open("XXX.wav", 'rb')

def callback(in_data, frame_count, time_info, status):
    data1 = wf.readframes(frame_count)
    data2 = wf1.readframes(frame_count)
    decodeddata1 = numpy.fromstring(data1, numpy.int16)
    decodeddata2 = numpy.fromstring(data2, numpy.int16)
    newdata = (decodeddata1 * 0.5 + decodeddata2* 0.5).astype(numpy.int16)
    return (result.tostring(), pyaudio.paContinue)

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