Title:
【発明の名称】音声の予測符号化装置
Document Type and Number:
Japanese Patent JP3087796
Kind Code:
B2
Abstract:
PURPOSE:To provide the method and device for predictively encoding voice without transmitting any gain. CONSTITUTION:In this predictive voice encoding method for encoding voices while utilizing the reproduction of voices by driving a synthesizing filter, to which a quantizing filter coefficient calculated based on the sampling of plural input voices is set, for the unit of a frame from two exciting sources corresponding to a time sequence vector component, the respective gains of the vector components at the two exciting sources are simultaneously obtained, and the gain to be imparted to the noise waveform vector components of a code book exciting source 31 of the next frame is predicted based on a residual waveform multiplied a gain selected by the selected noise waveform vector components of the code book exciting source 31 having the plural noise waveform vector components as one of the two exciting sources and a residual waveform stored before that so as to encode voices without transmitting the information of power.
Inventors:
Akitoshi Kataoka
Takehiro Moriya
Takehiro Moriya
Application Number:
JP17089592A
Publication Date:
September 11, 2000
Filing Date:
June 29, 1992
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G10L19/038; G10L19/04; G10L19/08; G10L19/083; G10L19/12; H03M7/30; H04B14/04; (IPC1-7): G10L19/08; G10L19/00; G10L19/12; H03M7/30; H04B14/04
Domestic Patent References:
| JP2287399A | ||||
| JP4264500A | ||||
| JP4264832A |
Foreign References:
Attorney, Agent or Firm:
Suguru Kusano