Title:
DEVICE AND METHOD FOR ENCODING AUDIO SIGNAL
Document Type and Number:
Japanese Patent JP3643735
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an audio signal encoding device capable of realizing high efficient compression at a low cost by reducing throughput without deteriorating sound quality.
SOLUTION: A bit allocation part 6 does not calculate an acoustic sense masking amount having a high throughput when calculating the number of bits to be allocated to each sub-band. Instead, bits are allocated so as to minimize an evaluation amount in which a physically quantized error amount is weighted based on the frequency of the sub-band and the amplitude of the signal component.
Inventors:
Koji Tanaka
Application Number:
JP27248599A
Publication Date:
April 27, 2005
Filing Date:
September 27, 1999
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
G10L19/02; G10L19/035; H03M7/30; (IPC1-7): G10L19/02; H03M7/30
Domestic Patent References:
| JP10065546A | ||||
| JP7210196A | ||||
| JP9046234A | ||||
| JP11149298A | ||||
| JP7143009A | ||||
| JP6291671A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Hidehiko Ito
Yutaka Horii
Toshio Morita
Hidehiko Ito
Yutaka Horii