Title:
符号化装置、復号化装置、およびこれらの方法
Document Type and Number:
Japanese Patent JP5371931
Kind Code:
B2
Abstract:
There is disclosed an encoding device capable of appropriately adjusting the dynamic range of spectrum inserted according to the technique for replacing a spectrum of a certain band with a spectrum of another band. The device includes a spectrum modification unit (112) which modifies a first spectrum S1(k) of the band 0 ¤ k < FL in various ways to change the dynamic range so that a way of modification for obtaining an appropriate dynamic range is checked. The information concerning the modification is encoded and given to a multiplexing unit (115).
Inventors:
Masahiro Oshikiri
Hiroyuki Ehara
Hiroyuki Ehara
Application Number:
JP2010254172A
Publication Date:
December 18, 2013
Filing Date:
November 12, 2010
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
G10L19/02; G01L21/04; G10L19/032; G10L21/0388; H03M7/30
Domestic Patent References:
| JP2000206989A | ||||
| JP2003216190A | ||||
| JP2003228399A | ||||
| JP2003255973A | ||||
| JP4810422B2 |
Foreign References:
| WO2004027368A1 |
Other References:
押切正浩他,"ピッチフィルタリングによる帯域拡張技術を用いた 7/10/15kHz 帯域スケーラブル音声符号化方式",日本音響学会2004年春季研究発表会講演論文集 -I-,2004年 3月17日,pp.327-328
Attorney, Agent or Firm:
Koichi Washida