Title:
【発明の名称】高品質オーディオ用符号器・復号器
Document Type and Number:
Japanese Patent JP3224130
Kind Code:
B2
Abstract:
PCT No. PCT/US91/02512 Sec. 371 Date Dec. 11, 1991 Sec. 102(e) Date Dec. 11, 1991 PCT Filed Apr. 12, 1991 PCT Pub. No. WO91/16769 PCT Pub. Date Oct. 31, 1991.The invention relates in general to high-quality low bit-rate digital transform coding and decoding of information corresponding to audio signals such as music signals. More particularly, the invention relates to signal analysis/synthesis in coding and decoding. The invention can optimize the trade off in transform coders between time resolution and frequency resolution by adaptively selecting the transform block length for each sampled audio segment, and/or can optimize coding gain by adaptively selecting the transform and/or by adaptively selecting the analysis window or the analysis/synthesis window pair.
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Inventors:
Davidson, Grant Allen
Application Number:
JP50835791A
Publication Date:
October 29, 2001
Filing Date:
April 12, 1991
Export Citation:
Assignee:
Dolby Laboratories Licensing Corporation
International Classes:
G05D11/13; G10L19/02; H03H17/00; H03M7/30; H04B1/66; H04B14/00; (IPC1-7): H04B14/00; G10L19/02; H03M7/30
Domestic Patent References:
| JP57185497A | ||||
| JP56129000A | ||||
| JP2504457A |
Attorney, Agent or Firm:
Yuzo Yamazaki (1 person outside)