Table 4 Evolution of CER and acoustic model size according to the number of Gaussian components of the emiting states (context-free models). Acoustic vectors are composed of 13 coefficients (12 PLP plus energy). 
voice-command recognition tests performed on the corpus VODIS (voice command/noisy).
voice-command recognition tests performed on the corpus VODIS (voice command/noisy).From: Compact Acoustic Models for Embedded Speech Recognition
No. of gauss/state | No. of parameters | CER |
|---|---|---|
2 | 5 832 | 5,80% |
4 | 11 664 | 4,80% |
128 | 373 248 | 3,94% |
full | 1 092 096 | 1,80% |