Vector excitation speech or audio coder for transmission or stor

Details Vector excitation speech or audio coder for transmission or stor Vector excitation speech or audio coder for transmission or stor

1987-04-06

1989-09-19

Harkcom, Gary V.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 31, 381 35, G10L 302

Patent

active

048688673

ABSTRACT:
A vector excitation coder compresses vectors by using an optimum codebook designed off line, using an initial arbitrary codebook and a set of speech training vectors exploiting codevector sparsity (i.e., by making zero all but a selected number of samples of lowest amplitude in each of N codebook vectors). A fast-search method selects a number N.sub.c of good excitation vectors from the codebook, where N.sub.c is much smaller tha

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