Abstract
This report describes two low data rate VFR coding schemes of spectral information based on contour quantization. The first is a basic coding scheme in which speech signal is first pre-segmented into phone-like sub-segments. The second one is an optimal coding scheme in which a joint optimization procedure for segmentation, quantization and codebook design is employed in the encoder to iteratively improve the coding efficiency to reach a lower bound of rate-distortion function. A complete vocoder to further consider the encoding of pitch and gain information is also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 81-88 |
| Number of pages | 8 |
| Journal | Journal of the Chinese Institute of Electrical Engineering, Transactions of the Chinese Institute of Engineers, Series E/Chung KuoTien Chi Kung Chieng Hsueh K'an |
| Volume | 2 |
| Issue number | 2 |
| State | Published - 1 May 1995 |
Cite this
Chang, S., Chen, S-H., Chung, C. J., & Hong, V. (1995). Low data rate VFR coding of spectral information using contour quantization. Journal of the Chinese Institute of Electrical Engineering, Transactions of the Chinese Institute of Engineers, Series E/Chung KuoTien Chi Kung Chieng Hsueh K'an, 2(2), 81-88.