Speech coding system using excitation pulse train

Details Speech coding system using excitation pulse train Speech coding system using excitation pulse train

1988-12-12

1992-06-02

Shaw, Dale M.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 38, 381 40, G10L 904

Patent

active

051194244

ABSTRACT:
A speech signal is analyzed for each frame so that it is separated into spectral envelope information and excitation information, and the excitation information is expressed by a plurality of pulses. Judgement is conducted as to whether the current frame is a voiced frame immediately after the transition from an unvoiced frame, a voiced frame continuative from a voiced frame or an unvoiced frame, and excitation pulses are generated in accordance with the judgement result. In case of a continuing voiced frame, the excitation pulse position of the current voiced frame is determined based on the pitch period with respect to the excitation pulse position of the immediately preceding voiced frame so that the excitation pulse train is generated at a position approximated to the determined position.

REFERENCES:
patent: 4516259 (1985-05-01), Yato et al.
patent: 4696038 (1987-09-01), Doddington et al.
patent: 4720861 (1988-01-01), Bertrand
patent: 4720862 (1988-01-01), Nakata et al.
patent: 4802221 (1989-01-01), Jibbe
patent: 4821324 (1989-04-01), Ozawa et al.
patent: 4873723 (1989-10-01), Shibagaki et al.
patent: 4881267 (1989-11-01), Taguchi
Transactions of the Committee on Speech Research, The Acoustical Society of Japan, Jan. 24, 1984, p. 617 (abstract).

Affiliated with

Also associated with

Rating

Speech coding system using excitation pulse train does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Speech coding system using excitation pulse train, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speech coding system using excitation pulse train will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2235763