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Vector excitation speech or audio coder for transmission or storage
Vector excitation speech or audio coder for transmission or storage
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机译:用于传输或存储的矢量激励语音或音频编码器
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摘要
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 thaPPORIGIN OF INVENTIONPP The invention described herein was made in the performance of work under a NASA contract, and is subject to the provisions of Public Law 96-517 (35 USC 202) under which the inventors were granted a request to retain title.
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