Speech coding apparatus using multimode coding

Details Speech coding apparatus using multimode coding Speech coding apparatus using multimode coding

H - Electricity

04

L

354/47

H04L 1/20 (2006.01) G10L 19/14 (2006.01) H04B 1/66 (2006.01)

Patent

CA 2024742

ABSTRACT OF THE DISCLOSURE A speech coding apparatus coupled to a transmission channel includes m (m is an integer greater than 1) coders, m decoders and m or (m - 1) error correcting coders. The apparatus also includes an evaluation unit which evaluates a quality of each of reproduced speech signals from the input speech signal and the reproduced speech signals and which outputs an evaluated quality of each of the reproduced speech signals. The quality of each of the reproduced speech signals is evaluated in a state having no transmission error. A decision unit identifies one of the m coders which provides the reproduced speech signal having a smallest distortion on the basis of the evaluated quality of each of the reproduced speech signals, a current error rate of the transmission channel and error correcting abilities of the error correcting coders, and generates a coder identification number representative of a selected one of the m coders. An output part outputs a multiplexed transmission signal including the coded speech signal generated by the one of the m coders identified by the decision unit and the error correcting code generated by a corresponding one of the m error correcting coders.

Affiliated with

Also associated with

Rating

Speech coding apparatus using multimode coding 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 apparatus using multimode coding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speech coding apparatus using multimode coding will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1794232