Title:
SPEECH CODING APPARATUS AND SPEECH DECODING APPARATUS
Document Type and Number:
Japanese Patent JP3907906
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that an encode characteristics is deteriorated where position candidates at every voice source number are distributed uniformly in a frame, in order to realize the position candidates with a low bit rate, since only the number of pulses is reduced, or the number of position candidates at every voice source number are thinner at a uniform interval, a drive voice source signal in which the pulses are concentrated locally cannot be generated.
SOLUTION: The combinations of the voice source positions are selected from voice source position combination tables 41, 51 containing the information for showing the combinations of the voice source positions whose use frequency is higher than a reference frequency among total combination of plural voice source positions, and voice source information of an input voice is encoded or decoded using the combinations of the voice source positions.
Inventors:
Tadashi Yamaura
Hirohisa Tazaki
Hirohisa Tazaki
Application Number:
JP2000049867A
Publication Date:
April 18, 2007
Filing Date:
February 25, 2000
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G10L19/038; G10L19/08; G10L19/107; G10L19/12; H04B14/04; (IPC1-7): G10L19/12; G10L19/00; H04B14/04
Domestic Patent References:
| JP11202898A | ||||
| JP11237899A | ||||
| JP10312198A | ||||
| JP9160596A |
Attorney, Agent or Firm:
Hiroaki Tazawa
Konobu Kato
Konobu Kato
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