Dear all HTS users,
I’m analyzing the SPTK especially the mcep.
But I have something confusing..!!
In _mcep.c, therer are two frequency warping function freqt and frqtr.
I think both functions are used for frequency warping. But I can’t find any relationship with the paper what I’ve ever seen.
I saw the paper “An adaptive algorithm for mel-ceptral analysis of speech” written in 1992.
I can’t find any relationship with the paper. What equation refer to the freqt and what equation represent the frqtr in the paper?
Or did I see the wrong paper? (It was referenced in SPTKfre-3.2.pdf file)