audio_tools.py 文件源码

def readwav(file):
    # wavio.py
    # Author: Warren Weckesser
    # License: BSD 3-Clause (http://opensource.org/licenses/BSD-3-Clause)
    """
    Read a wav file.

    Returns the frame rate, sample width (in bytes) and a numpy array
    containing the data.

    This function does not read compressed wav files.
    """
    wav = wave.open(file)
    rate = wav.getframerate()
    nchannels = wav.getnchannels()
    sampwidth = wav.getsampwidth()
    nframes = wav.getnframes()
    data = wav.readframes(nframes)
    wav.close()
    array = _wav2array(nchannels, sampwidth, data)
    return rate, sampwidth, array