Does the Sphinx-4 front end generate the same features as the SphinxTrain wave2feat program?
The features that SphinxTrain generate are called cepstrum. Cepstrum are usually 13-dimensional. The features that Sphinx-4 generates are more than cepstrum. It is 39-dimensional, and consists of the cepstrum, the delta of the cepstrum, and the double delta of the cepstrum (thus 3X the size). To make Sphinx-4 generate the same cepstrum as SphinxTrain wave2feat, you should remove the last two steps in the front end, so that it looks like:
