Title:
広帯域信号の復号における周期性の強調
Document Type and Number:
Japanese Patent JP3869211
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.
Inventors:
Bessett, Bruno
Salami, red one
Referable, roche
Salami, red one
Referable, roche
Application Number:
JP2000578810A
Publication Date:
January 17, 2007
Filing Date:
October 27, 1999
Export Citation:
Assignee:
Voice Age Corporation
International Classes:
H04B14/04; G01L11/04; G01L21/02; G10L13/00; G10L19/12; H03H17/06; H03M7/30; H03M7/36; H04B1/62; H04B7/26; H04Q7/22; H04Q7/32
Domestic Patent References:
| JP9214349A | ||||
| JP9269798A |
Attorney, Agent or Firm:
Takashi Ishida
Jun Tsuruta
Shimichi Akihisa
Masaya Nishiyama
Higuchi Souji
Jun Tsuruta
Shimichi Akihisa
Masaya Nishiyama
Higuchi Souji