LSP prediction coding utilizing a determined best prediction mat

Details LSP prediction coding utilizing a determined best prediction mat LSP prediction coding utilizing a determined best prediction mat

1998-02-13

2000-07-11

Zele, Krista

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704220, 704230, G01L 1904

Patent

active

060886676

ABSTRACT:
An input vector is supplied from an input terminal 213. A first memory 213 accumulates a codevector from a quantizer. An adder 130 adds together the codevector and a Predicted vector from a predictor, and provides an output vector thus obtained to an output terminal 214. A second memory 214 accumulates the output vector. A prediction coefficient calculator calculates and provides a prediction coefficient matrix having the best evaluation value from the codevectors of a plurality of frames and the output vector. The predictor receives the codevectors of a plurality of selected past frames and the prediction coefficient matrix, and provides the predicted vector. A subtracter provides a difference vector between the input vector and the predicted vector. The quantizer obtains and provides the codevector by quantizing the difference vector.

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