Title:
VOICE SIGNAL COMPRESSION DEVICE AND VOICE SIGNAL COMPRESSION METHOD
Document Type and Number:
Japanese Patent JP2016105188
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a voice signal compression device capable of making a circuit scale and a processing load small, and maintaining excellent sound quality of a decrypted voice signal with respect to compressibility.SOLUTION: A voice signal compression device 1 includes a filter unit 15 that performs filtering processing of removing a signal in an arbitrary band or region in which an error occurring in processing of a prediction coding of a voice signal exists, or processing equivalent to the filtering processing. The filter unit 15, when the filtering processing or the processing equivalent to the filtering processing is performed, changes an arbitrary band or region to be removed from respective signals, dependently on bands or regions in which a voice signal can exist.SELECTED DRAWING: Figure 1
Inventors:
KOJIMA YUKI
KURANARI TOMOHISA
KURANARI TOMOHISA
Application Number:
JP2016003540A
Publication Date:
June 09, 2016
Filing Date:
January 12, 2016
Export Citation:
Assignee:
AXELL CORP
International Classes:
G10L19/26; G10L19/00; H03M7/38
Domestic Patent References:
| JP2010529511A | 2010-08-26 | |||
| JPH04264833A | 1992-09-21 |
Foreign References:
| WO2005057550A1 | 2005-06-23 |
Other References:
JPN6015033814; Ｎ．Ｓ． Ｊａｙａｎｔ: 'Ａｄａｐｔｉｖｅ Ｐｏｓｔ-Ｆｉｌｔｅｒｉｎｇ ｏｆ ＡＤＰＣＭ Ｓｐｅｅｃｈ' Ｔｈｅ Ｂｅｌｌ Ｓｙｓｔｅｍ Ｔｅｃｈｎｉｃａｌ Ｊｏｕｒｎａｌ Ｖｏｌ． ６０， Ｎｏ． ５, 198105, ｐｐ． ７０７-７１７
Attorney, Agent or Firm:
Hiroshi Sano
Akio Ishii
Akio Ishii
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