Method for searching codebook

Details Method for searching codebook Method for searching codebook

2006-08-22

2006-08-22

McFadden, Susan (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

Reexamination Certificate

active

07096181

ABSTRACT:
A method for searching a codebook which predicts a residual element of an input voice signal includes combining each track of the input signal, forming track units including at least two tracks, and determining a pulse code for each track. The method further includes calculating energy for each track using an energy formula including a vector dot product, arranging or selecting codewords in a small track energy order, and searching or selecting an optimal pulse for a single- or double-pulse track of the selected codeword.

REFERENCES:
patent: 6236960 (2001-05-01), Peng et al.
patent: 6813602 (2004-11-01), Thyssen
patent: 6847929 (2005-01-01), Bernard

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