In this experiment, the 16th order LPC cepstrum was used as the acoustic parameters representing speaker features. Table 1 shows the condition of the speech analysis. The universal code book is constructed using the Euclid distance from the speech data.
| Acoustic parameters | LPC cepstrum |
| sampling period | 12 kHz |
| LPC | 16 dimension |
| LPC analysis | 14 order |
| window length | 21.3 ms (256 point) |
| window interval | 10.7 ms (128 point) |
| high frequency weighting |
|
| universal code book size | 256 |