Title:
オーバーサンプリングされた合成広帯域信号の高周波数成分回復の方法および装置
Document Type and Number:
Japanese Patent JP3936139
Kind Code:
B2
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.
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Inventors:
Bessett, Bruno
Salami, red one
Referable, roche
Salami, red one
Referable, roche
Application Number:
JP2000578812A
Publication Date:
June 27, 2007
Filing Date:
October 27, 1999
Export Citation:
Assignee:
Voice Age Corporation
International Classes:
H03M7/30; G01L11/04; G01L21/02; G10L13/00; G10L19/12; H03H17/06; H03M7/36; H04B1/62; H04B7/26; H04B14/04; H04Q7/22; H04Q7/32
Domestic Patent References:
| JP8123495A | ||||
| JP8248997A |
Foreign References:
| US5455888 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Koichi Itsubo
Yoshio Mizutani
Masaya Nishiyama
Jun Tsuruta
Tetsuro Shimada
Koichi Itsubo
Yoshio Mizutani
Masaya Nishiyama