proto.py 文件源码

def windowing(input):
    """
    Applies hamming window to the input frames.

    Args:
        input: array of speech samples [N x M] where N is the number of frames and
               M the samples per frame
    Output:
        array of windoed speech samples [N x M]
    Note (you can use the function hamming from scipy.signal, include the sym=0 option
    if you want to get the same results as in the example)
    """
    N, M = input.shape
    window = ss.hamming(M, sym=False)
    return (input * window)