Speech-adaptive predictive coding system having reflected binary

Details Speech-adaptive predictive coding system having reflected binary Speech-adaptive predictive coding system having reflected binary

1984-02-21

1987-12-01

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 500

Patent

active

047109602

ABSTRACT:
A speech predictive coding system produces a predicted residual sequence and parameter information representing predictor coefficients and residual power. The parameter information is encoded into reflected binary code and multiplexed with the predicted residual sequence for transmission to a receiver. At the receiver the multiplexed data is demultiplexed into a predicted residual sequence and reflected binary encoded parameter information. Burst errors in the multiplexed signal are detected at the receiver using a burst-energy detector, and when so detected cause a bit by bit substitution from a prior frame of the encoded parameter information into the present frame of the encoded parameter information. The encoded parameter information, with those substitutions as are necessary is decoded and used to generate the predictor coefficients and residual power for converting the predicted residual sequence into a reconstructed speech signal.

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Atal, B. S. "Predictive Coding of Speech at Low Bit Rates" IEEE Transactions on Communications Com 40, No. 4, Apr. 1982.
Flangan, J. L. "Speech, Analysis Synthesis and Perception" Springer-Verlag, New York 1972.
Inose, Hiroshi "An Introduction to Digital Integrated Communications Systems" University of Tokyo Press, Tokyo, Japan 1979.

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