Hi,
For PTM models vectors are reused. Particularly, in the Pocketsphinx PTM model, thers's 42 sets of means and variances that are used for the base monophones. For triphones, they use the gaussians of the base.
However, the hmm of the any of the monophones should be of 3 states (see picture below where monophone AA has states 6, 7 and 8 as an example).
I'm wondering if the gaussians are reused in the 3 states of the hmm of the base monophone as well, because there's only 42 mgau (0->41) for the 42 base monophones. Yes in each mgau there's 3 sets but that's the stream, since Pocketsphinx has 3 streams.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hi,
For PTM models vectors are reused. Particularly, in the Pocketsphinx PTM model, thers's 42 sets of means and variances that are used for the base monophones. For triphones, they use the gaussians of the base.
However, the hmm of the any of the monophones should be of 3 states (see picture below where monophone AA has states 6, 7 and 8 as an example).
I'm wondering if the gaussians are reused in the 3 states of the hmm of the base monophone as well, because there's only 42 mgau (0->41) for the 42 base monophones. Yes in each mgau there's 3 sets but that's the stream, since Pocketsphinx has 3 streams.
This is correct, gaussians are the same for states, mixtures are different.
Thanks Nickolay :)