Title:
【発明の名称】高品質オーディオ用低ビット伝送速度変換コーダ、デコーダ、及びエンコーダ・デコーダ
Document Type and Number:
Japanese Patent JP2821713
Kind Code:
B2
Abstract:
An encoder, decoder and encoder/decoder system utilizes quantization and adaptive bit allocation to encode and decode spectral information within frequency subbands. In accordance with spectral levels within a respective subband, bits are adaptively allocated to representations of the information in the respective subband and in adjacent subbands.
Inventors:
Filder, Luis Dunn
Davidson, Grant Allen
Davidson, Grant Allen
Application Number:
JP50382590A
Publication Date:
November 05, 1998
Filing Date:
January 29, 1990
Export Citation:
Assignee:
DOLBY LABORATORIES LICENSING CORPORATION
International Classes:
G05D11/13; G06T9/00; G10L19/02; G11B20/10; G11B20/12; G11B20/18; H03M7/30; H03M5/04; H03M7/24; H04B1/66; H04B14/00; H04B14/04; (IPC1-7): H03M7/30; G10L9/18; G11B20/10; G11B20/12; H03M7/24; H04B14/04
Domestic Patent References:
| JP2501507A |
Other References:
【文献】IEEE Transaction on Acoustics,Speech and Signal Processing,Vol.34,No.5,1986,J.P.Princen,A.B.Bradley 「Analysis/Synthesis Filter Bank Design Based on Time Domain Aliasing Cancellation」p.1153~1161
Attorney, Agent or Firm:
Yuzo Yamazaki (1 person outside)