Accession Number:

ADA025443

Title:

Study of Sequential Estimation Methods for Speech Digitization.

Descriptive Note:

Final rept. 16 Apr 74-16 Jun 75,

Corporate Author:

NOTRE DAME UNIV IND DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

1975-06-16

Pagination or Media Count:

182.0

Abstract:

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.

Subject Categories:

  • Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE