Table 3 DER and acoustic model size according to the number of Gaussian components per state (context-free models). The acoustic vectors are composed of 13 coefficients (12 PLP plus energy). 
isolated-digit recognition tests were performed on the corpus BDSON (digit/clean).
isolated-digit recognition tests were performed on the corpus BDSON (digit/clean).From: Compact Acoustic Models for Embedded Speech Recognition
No. of gauss/state | No. of parameters | DER |
|---|---|---|
2 | 5 832 | 4,96% |
4 | 11 664 | 4,43% |
128 | 373 248 | 4,52% |
full | 1 092 096 | 0,96% |