Compute Spectral Subband Centroid features from an audio signal. :param signal: the audio signal from which to compute features. Should be an N*1 array :param samplerate: the samplerate of the signal we are working with. :param winlen: the length of the analysis window in seconds. Defau
(signal,samplerate=16000,winlen=0.025,winstep=0.01,
nfilt=26,nfft=512,lowfreq=0,highfreq=None,preemph=0.97)
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