obspy.signal.freqattributes.log_cepstrum
- log_cepstrum(data, fs, nc, p, n, w)[source]
Cepstrum of a signal.
Computes the cepstral coefficient on a logarithmic scale of the given data which can be windowed or not.
If data are windowed the analytic signal and the envelope of each window is returned.
- Parameters:
data (
ndarray) – Data to make envelope of.fs – Sampling frequency in Hz.
nc – number of cepstral coefficients.
p – Number of filters in filterbank.
n – Number of data windows.
- Returns:
Cepstral coefficients.