Table 12 Statistics of bits per second of the proposed approach and the baselines with various logF0 codebooks for the SD speech coding case
From: A parametric prosody coding approach for Mandarin speech using a hierarchical prosodic model
| Â | Bits per second | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Average | Standard deviation | Maximum/Minimum | |||||||
NC | M0 | M1 | NC | M0 | M1 | NC | M0 | M1 | |
(a) Inside | |||||||||
 SD-HPM | 104.1 | 89.5 | 79.6 | 4.8 | 4.0 | 3.6 | 103.9/81.2 | 118.1/71.7 | 91.5/62.9 |
 SD-BSL-24 | 96.4 | 80.7 | 77.3 | 4.4 | 3.6 | 3.3 | 93.1/75.1 | 109.3/64.2 | 88.1/61.0 |
 SD-BSL-32 | 96.4 | 81.8 | 78.6 | 4.4 | 3.6 | 3.3 | 94.4/75.1 | 109.3/65.2 | 89.2/62.2 |
 SD-BSL-64 | 100.3 | 85.4 | 81.7 | 4.6 | 3.8 | 3.5 | 98.6/78.2 | 113.7/67.9 | 92.7/63.8 |
 SD-BSL-128 | 104.1 | 88.8 | 83.8 | 4.8 | 4.0 | 3.6 | 102.4/81.2 | 118.1/70.2 | 94.9/65.3 |
 SD-BSL-256 | 108.0 | 92.7 | 84.7 | 5.0 | 4.1 | 3.7 | 106.5/84.2 | 122.4/73.6 | 95.8/66.1 |
(b) Outside | |||||||||
 SD-HPM | 102.6 | 87.5 | 81.4 | 4.3 | 3.5 | 3.3 | 95.0/88.1 | 110.6/76.1 | 88.7/71.8 |
 SD-BSL-24 | 95.0 | 80.8 | 79.4 | 4.0 | 3.4 | 3.0 | 87.3/81.5 | 102.4/69.5 | 84.7/69.7 |
 SD-BSL-32 | 95.0 | 82.1 | 81.1 | 4.0 | 3.5 | 3.0 | 88.6/81.5 | 102.4/70.6 | 87.1/71.7 |
 SD-BSL-64 | 98.8 | 85.7 | 86.3 | 4.2 | 3.6 | 3.5 | 92.4/84.8 | 106.5/73.7 | 94.5/76.1 |
 SD-BSL-128 | 102.6 | 89.3 | 105.2 | 4.3 | 3.8 | 6.7 | 96.3/88.1 | 110.6/76.8 | 116.3/91.0 |
 SD-BSL-256 | 106.4 | 93.6 | 206.1 | 4.5 | 4.0 | 23.7 | 101.0/91.3 | 114.7/80.5 | 257.1/147.0 |