MEL bank analysis is the first step in MEL frequency cepstral
coefficient (MFCC) analysis.
For more information about MEL bank analysis, see Section 5.2.6.
The method of Section 5.2.1 applied to
MEL bank analysis is implemented by
software/module_mel_bank.m with method='spa',
and tested by
software/module_mel_bank_test.m with method='spa'.
Application of SPA to MEL Bank analysis