Accession Number : AD0750537

Title :   Application of Shannon's Rate Distortion Theory to Speech Encoding,

Corporate Author : NORTH CAROLINA STATE UNIV RALEIGH DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Abut,Huseyin

Report Date : 15 SEP 1972

Pagination or Media Count : 89

Abstract : The digital encoding of speech is considered from the point of view of Shannon's rate distortion theory. First, a non-adaptive predictor-subtractor operating at intervals less than the pitch period is used to whiten the speech signal. This makes possible the derivation of upper and lower bounds on Shannon's rate distortion function which gives the minimum rate necessary to achieve a specified mean square error. Finally, a subjective test was performed to determine the relationship between speech quality and the value of the rate distortion function. (Author)

Descriptors :   (*INFORMATION THEORY, *SPEECH RECOGNITION), (*CODING, SPEECH), DISTORTION, ANALYSIS OF VARIANCE, REGRESSION ANALYSIS, WHITE NOISE, POWER SPECTRA, PROBABILITY DENSITY FUNCTIONS, DIGITAL TO ANALOG CONVERTERS, ENTROPY, SAMPLING, LOW PASS FILTERS, THESES

Subject Categories : Cybernetics
      Voice Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE