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egs/chime4/s5_1ch/conf/mfcc_hires.conf
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# config for high-resolution MFCC features, intended for neural network training # Note: we keep all cepstra, so it has the same info as filterbank features, # but MFCC is more easily compressible (because less correlated) which is why # we prefer this method. --use-energy=false # use average of log energy, not energy. --num-mel-bins=40 # similar to Google's setup. --num-ceps=40 # there is no dimensionality reduction. --low-freq=20 # low cutoff frequency for mel bins... this is high-bandwidth data, so # there might be some information at the low end. --high-freq=-400 # high cutoff frequently, relative to Nyquist of 8000 (=7600) |