Interframe differential vector coding of line spectrum frequencies
Erzin Engin, Cetin, A.Enis
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/27811
Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing
- Conference Paper 
Publ by IEEE, Piscataway, NJ, United States
Line Spectrum Frequencies (LSF's) uniquely represent the Linear Predictive Coding (LPC) filter of a speech frame. In many vocoders LSF's are used to encode the LPC parameters. In this paper, an interframe differential coding scheme is presented for the LSF's. The LSF's of the current speech frame are predicted by using both the LSF's of the previous frame and some of the LSF's of the current frame. Then, the difference vector resulting from prediction is vector quantized.