acoustic_feats.py 文件源码

def _smooth(params, win, type="HAMMING"):


    win = int(win+0.5)
    if win >= len(params)-1:
        win = len(params)-1
    if win % 2 == 0:
        win+=1

    s = np.r_[params[win-1:0:-1],params,params[-1:-win:-1]]


    if type=="HAMMING":
        w = np.hamming(win)
        third = int(win/5)
        #w[:third] = 0
    else:
        w = np.ones(win)


    y = np.convolve(w/w.sum(),s,mode='valid')
    return y[(win/2):-(win/2)]