Title :
Embedded RPE based on multistage coding
Author :
Shude Zhang ; Lockhart, G.
Author_Institution :
Dept. of Electron. & Electr. Eng., Leeds Univ.
fDate :
7/1/1997 12:00:00 AM
Abstract :
The feasibility and performance of an embedded regular pulse excited speech coder (ERPE) based on multistage coding is investigated. The simulated ERPE system exhibits a graceful reduction of reconstructed speech quality for bit rates from 14.8 to 6.4 kb/s in 4.2 kb/s steps, and carries a very small signal-to-noise ratio (SNR) penalty compared to its conventional version
Keywords :
linear predictive coding; signal reconstruction; speech coding; speech intelligibility; 6.4 to 14.8 kbit/s; LPC parameter reuse; SNR penalty; bit rates; embedded RPE; embedded regular pulse excited speech coder; multistage coding; performance; reconstructed speech quality; signal to noise ratio; simulated ERPE system; Bit rate; Decoding; Filters; Linear predictive coding; Modulation coding; Phase change materials; Pulse modulation; Speech coding; Speech synthesis; Vector quantization;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
