Title:
【発明の名称】ベクトル量子化装置
Document Type and Number:
Japanese Patent JP2918021
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To eliminate characteristic degradation by division and to reduce an arithmetic operation amount by performing a processing for independently investigating a coefficient for respective divided basic vectors on the orthogonalized basic vector. SOLUTION: An input vector from an input terminal 1 is stored in a buffer memory(BM) 2. A weight coefficient calculation part 3 performs the linear predictive analysis of the input vector inside the BM 2, obtains the impulse response h(n)} of a linear predictive synthesis filter provided with a linear prediction coefficient αi i=1-i} as a coefficient and outputs it to an input vector waiting part (IW) 4 and a basic vector waiting part 6. The IW 4 reads the input vector x(n)} from the buffer 2, inputs the impulse response h(n)} from the calculation part 3 and calculates a weighted input vector Xw(n)}. The basic vector ai (n)} is read and exchanged with the impulse response h(n)} and a weighted basic vector bi (n)} is calculated. The vector is inputted to an orthogonal part 7 and orthogonalized by a Gram-Schmidt orthogonalization method and independent coefficient search is performed in part selection parts 8 and 9.
Inventors:
ONO SHIGERU
Application Number:
JP5524896A
Publication Date:
July 12, 1999
Filing Date:
March 13, 1996
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
G10L19/038; G10L19/16; H03M7/30; (IPC1-7): H03M7/30; G10L9/18
Domestic Patent References:
| JP61209499A | ||||
| JP58207099A | ||||
| JP6429032A | ||||
| JP6209262A | ||||
| JP86600A | ||||
| JP8263100A | ||||
| JP844400A | ||||
| JP3222521A |
Other References:
電子情報通信学会技術研究報告，ＳＰ９４−５３〜６２［音声］ｐ．１−６；ＳＰ９４−５３
Attorney, Agent or Firm:
Yanagi Kawa Shin