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Coding of LSP Parameters Using Interframe Moving Average Prediction and Multi-Stage Vector Quantization
Hitoshi OHMURO Takehiro MORIYA Kazunori MANO Satoshi MIKI
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/07/25
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section of Letters Selected from the 1993 IEICE Spring Conference)
speech coding, LSP, vector quantization, CELP, interframe correlation, mobile telephone, cellular radio,
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This letter proposes an LSP quantizing method which uses interframe correlation of the parameters. The quantized parameters are represented as a moving average of code vectors. Using this method, LSP parameters are quantized efficiently and the degradation of decoded parameters caused by bit errors affects only a few following frames.