Title:
METHOD AND DEVICE FOR COMPRESSING AUDIO SIGNAL
Document Type and Number:
Japanese Patent JP3698418
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an audio signal compression method and an audio signal compression device capable of compressing more efficiently than in the conventional method and device while keeping high sound quality, when compressing an audio signal using vector quantization.
SOLUTION: At least one vector quantizer of multistage vetor quantizers 51, 52, 53 of a multi-stage quantizing means 5 performs vector quantization using a weighting coefficient as weighting at the time of quantization, for a frequency calculated based on a spectrum of an input audio signal and the hearting sensitivity characteristics which are a hearing property of a human being.
Inventors:
Norimatsu Takeshi
Shuji Miyasaka
Yoshihisa Nakato
Mineo Tsushima
Shuji Miyasaka
Yoshihisa Nakato
Mineo Tsushima
Application Number:
JP2001157549A
Publication Date:
September 21, 2005
Filing Date:
July 01, 1996
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G10L19/038; G10L19/02; G10L19/035; G10L19/04; G10L19/16; H03M7/30; (IPC1-7): G10L19/02
Domestic Patent References:
| JP3246715B2 | ||||
| JP435527A | ||||
| JP6118998A |
Attorney, Agent or Firm:
Kenichi Hayase