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Patent Searching and Data


Title:
【発明の名称】広帯域信号の符号化における適応帯域ピッチ探索のための方法および装置
Document Type and Number:
Japanese Patent JP2002528775
Kind Code:
A
Abstract:
A pitch search method and device for digitally encoding a wideband signal, in particular but not exclusively a speech signal, in view of transmitting, or storing, and synthesizing this wideband sound signal. The new method and device which achieve efficient modeling of the harmonic structure of the speech spectrum uses several forms of low pass filters applied to a pitch codevector, the one yielding higher prediction gain (i.e. the lowest pitch prediction error) is selected and the associated pitch codebook parameters are forwarded.

Inventors:
Besset, Bruno
Salami, red one
Referable, roche
Application Number:
JP2000578808A
Publication Date:
September 03, 2002
Filing Date:
October 27, 1999
Export Citation:
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Assignee:
Voice Age Corporation
International Classes:
G01L11/04; G01L21/02; G10L13/00; G10L19/12; H03H17/06; H03M7/30; H03M7/36; H04B1/62; H04B7/26; H04B14/04; H04Q7/22; H04Q7/32; (IPC1-7): G10L11/04; G10L19/00; G10L19/12; H03M7/30; H03M7/36
Attorney, Agent or Firm:
Takashi Ishida (4 others)