Intelligibility test results are presented for two types of 2400 bit/second autocorrelation vocoders. One vocoder directly transmits the digitized coefficients in a Laguerre expansion of the autocorrelation function. The other vocoder contains a resistor matrix which transforms these coefficients to spectrum amplitude values and is therefore compatible with present channel vocoders. A comparison of the effects of fixed vs variable reference spectrum encoding is presented.

Authors: Howard, Calvin F.; Manley, Harold J.; Stoddard, James C.
Affiliation: Applied Research Laboratory, Sylvania Electronic Systems, Waltham, MA
JAES Volume 15 Issue 4 pp. 404-406; October 1967
Publication Date: October 1, 1967 Import into BibTeX
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=1080

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