Title:
符号化装置、復号化装置、通信端末装置、基地局装置、符号化方法及び復号化方法
Document Type and Number:
Japanese Patent JP5013863
Kind Code:
B2
Abstract:
There is disclosed an encoding device capable of improving similarity between the high frequency band spectrum of the original signal and a new spectrum to be generated while realizing a low bit rate when encoding a wide-band signal spectrum. The encoding device has sub-band amplitude calculation units (122, 128) for calculating the amplitude of the respective sub-bands for the high frequency band spectrum obtained from the wide-band signal. A search unit (124) and a gain codebook (125) select some sub-bands from a plurality of sub-bands and only the gain of the selected sub-bands is subjected to encoding. An interpolation unit (126) expresses the gain of the sub-band not selected, by mutually interpolating the selected gains.
Inventors:
Masahiro Oshikiri
Application Number:
JP2006513605A
Publication Date:
August 29, 2012
Filing Date:
May 17, 2005
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
G10L19/02; G10L19/035; G10L21/0388; H03M7/30; H04B1/66
Domestic Patent References:
| JP2004004530A | 2004-01-08 | |||
| JP2004101720A | 2004-04-02 | |||
| JP2003323199A | 2003-11-14 | |||
| JP2003216190A | 2003-07-30 | |||
| JP2003255973A | 2003-09-10 | |||
| JP2002123298A | 2002-04-26 | |||
| JP2004198485A | 2004-07-15 | |||
| JP2005004119A | 2005-01-06 |
Foreign References:
| WO2001095496A1 | 2001-12-13 |
Attorney, Agent or Firm:
Koichi Washida