Study of Sequential Estimation Methods for Speech Digitization.
Final rept. 16 Apr 74-16 Jun 75,
NOTRE DAME UNIV IND DEPT OF ELECTRICAL ENGINEERING
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This report describes the results of a twelve month contract to study the application of sequential estimation methods to the problem of speech digitization. Bit rates of 8 Kbs to 16 Kbs, toll-quality transmission and simplicity of implementation were the main design objectives. Two basic systems were investigated. The first, referred to as a residual encoder, is a special form of ADPCM system which combines an adaptive predictor, adaptive quantizer and a source coder to achieve high levels of performance.
- Voice Communications