python - Python从24位数据的立体声wav文件wav中读取单声道数据

Question

我想读左声道和右声道。

 import wave
 origAudio = wave.open("6980.wav","r")
 frameRate = origAudio.getframerate()
 nChannels = origAudio.getnchannels()
 sampWidth = origAudio.getsampwidth()
 nbframe=origAudio.getnframes()
 da = np.fromstring(origAudio.readframes(48000), dtype=np.int16)
 origAudio.getparams()

参数

  (2, 3, 48000, 2883584, 'NONE', 'not compressed')

现在我想用24位数据的wave文件来分离左右声道

Answer 1

您可以使用 wavio ，我编写的一个小模块，用于使用 numpy 数组读取和写入 WAV 文件。在你的情况下:

import wavio

wav = wavio.read("6980.wav")

# wav.data is the numpy array of samples.
# wav.rate is the sampling rate.
# wav.sampwidth is the sample width, in bytes.  For a 24 bit file,
# wav.sampwdith is 3.

left_channel = wav.data[:, 0]
right_channel = wav.data[:, 1]

wavio is on PyPi ，源代码在 github 上 https://github.com/WarrenWeckesser/wavio .