Interframe differential vector coding of line spectrum frequencies
- 1 January 1993
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2 (15206149) , 25-28 vol.2
- https://doi.org/10.1109/icassp.1993.319219
Abstract
In many vocoders LSFs (line spectrum frequencies) are used to encode the linear predictive coding (LPC) parameters. An interframe differential coding scheme is presented for LSFs. The LSFs of the current speech frame are predicted by using both the LSFs of the previous frame and some of the LSFs of the current frame. Then the difference vector resulting from prediction is vector quantized. The proposed scheme is computationally efficient and easy to implement, and can be used in low-bit-rate vocoders.Keywords
This publication has 7 references indexed in Scilit:
- Line spectrum pair (LSP) and speech data compressionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Encoding of LPC spectral parameters using switched-adaptive interframe vector prediction (speech coding)Published by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Efficient vector quantization of LPC parameters at 24 bits/framePublished by Institute of Electrical and Electronics Engineers (IEEE) ,1991
- Pitch-synchronous waveform processing techniques for text-to-speech synthesis using diphonesSpeech Communication, 1990
- Stochastic relaxation algorithm for improved vector quantiser designElectronics Letters, 1989
- Predictive Coding of Speech at Low Bit RatesIEEE Transactions on Communications, 1982
- Line spectrum representation of linear predictor coefficients of speech signalsThe Journal of the Acoustical Society of America, 1975