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Convention Paper

Improved Vocoders

Authors: Cassel, Lawrence E.; Jurenko, David M.

AES Convention 16 · Paper 327 · October 1964

Abstract

In the past two years channel vocoder technology has advanced to the point where intelligibility is no longer the most important factor in determining the usefulness of the channel vocoder as a communications device. There exist today several vocoders which provide word intelligibility in the 85-95% bracket at 2400 B/S. In terms of connected text or conversation such individual word intelligibility corresponds to virtually 100% understandibility. The purpose of this paper is to discuss the quality-intelligibility aspects of vocoded speech and to generally outline some areas of improvement in the channel vocoder. The term quality is a very nebulous one as we all know. In all discussion, the use of the word quality will be intimately tied to the acceptability and preference indicated by an ordinary listener.

Details

Published in
AES Convention 16
AES Convention
16
Paper number
327
Publication date
October 6, 1964
Affiliation
Philco Corporation, Blue Bell, PA (See document for exact affiliation information.)
Type
Convention Paper