Title:
ディジタルデータの符号化方法および符号化装置
Document Type and Number:
Japanese Patent JP4271588
Kind Code:
B2
Abstract:
To strictly decide pure tones, even when input digital data have small signal amplitudes.
A encoding device is equipped with a scale factor calculating part 31 which calculates scale factors, corresponding to maximum values of spectrum components constituting digital data as to respective frequency bands and a pure tone deciding part 32, which varies the criterion for pure tone by using the maximum value and mean value of the scale factors.
COPYRIGHT: (C)2005,JPO&NCIPI
Inventors:
Osamu Fujii
Application Number:
JP2004003404A
Publication Date:
June 03, 2009
Filing Date:
January 08, 2004
Export Citation:
Assignee:
Sharp Corporation
International Classes:
G10L19/02; G10L19/035; G10L21/0208; G10L25/51; H03M7/30
Domestic Patent References:
| JP2002351500A | ||||
| JP2000276197A | ||||
| JP2002091500A | ||||
| JP2000148191A |
Attorney, Agent or Firm:
Kenzo Hara International Patent Office
Kenzo Hara
Ryuichi Kijima
Ichiro Kaneko
Kenzo Hara
Ryuichi Kijima
Ichiro Kaneko