Title:
音声符号化装置、音声復号化装置、およびこれらの方法
Document Type and Number:
Japanese Patent JP3955179
Kind Code:
B2
Abstract:
First codebook 61 and second codebook 62 respectively have two subcodebooks, and in respective codebooks, addition sections 66 and 67 obtain respective excitation vectors by adding sub-excitation vectors fetched from respective two subcodebooks. Addition section 68 obtains an excitation sample by adding those excitation vectors. According to the aforementioned constitution, it is possible to store sub-excitation vectors with different characteristics in respective sub-codebooks. Therefore, it is possible to correspond to input signals with various characteristics, and achieve excellent sound qualities at the time of decoding.
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Inventors:
Toshiyuki Morii
Kazutoshi Yasunaga
Kazutoshi Yasunaga
Application Number:
JP2000553944A
Publication Date:
August 08, 2007
Filing Date:
June 08, 1999
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G10L19/04; G10L19/038; G10L19/083; G10L19/12; G10L19/20; G10L19/22; G10L25/93; H03M7/30
Domestic Patent References:
| JP6222797A | ||||
| JP5165497A | ||||
| JP5232994A | ||||
| JP6195098A | ||||
| JP8123494A | ||||
| JP1020889A | ||||
| JP10143199A |
Attorney, Agent or Firm:
Koichi Washida
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