inputs.py 文件源码

def read_file_pair(filename_pair, mono=True):
    """
    given a pair of file names, read in both waveforms and upsample (through
    librosa's default interpolation) the downsampled waveform
    assumes the file name pair is of the form ("original", "downsampled")
    mono selects whether to read in mono or stereo formatted waveforms

    returns a pair of numpy arrays representing the original and upsampled
    waveform
    """
    channel = 1 if mono else 2
    true_waveform, true_br = librosa.load(filename_pair[0], sr=None,
                                          mono=mono)
    ds_waveform, _ = librosa.load(filename_pair[1], sr=true_br, mono=mono)
    # truth, example
    return true_waveform.reshape((-1, channel)), \
        ds_waveform.reshape((-1, channel))