Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1987-10-22
1989-09-26
Wong, Peter S.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
3645135, 341143, 375122, G10L 302
Patent
active
048706850
ABSTRACT:
A voice signal coding method for compressing voice data by coding is provided. PCM coded voice data are grouped into blocks in a timed sequence, each block having a predetermined number of data. A scale data representing a MSB corresponding to a maximum value in absolute value in each block is identified. Then, a code data is defined by a predetermined number of bits of data containing the MSB, thereby having the voice data compressed by coding. The code data is corrected such that an error between a decoded value of the code data and the original voice data corresponding to the code data is minimized. With such a correction step, the code data is refined such that a reproduced voice signal by decoding the thus corrected code data is very close to the original voice signal.
REFERENCES:
patent: 4301333 (1981-11-01), Gillette
patent: 4481659 (1984-11-01), Adoul
patent: 4550425 (1985-10-01), Anderson et al.
patent: 4587669 (1986-05-01), Gillette
patent: 4588986 (1986-05-01), Byrne
patent: 4700360 (1987-10-01), Visser
Kadokawa Yuichi
Uchiyama Hiroki
Yamada Wasaku
Ricoh & Company, Ltd.
Todd Voeltz Emanuel
Wong Peter S.
LandOfFree
Voice signal coding method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Voice signal coding method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voice signal coding method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-193322