A quadraphonic program on a disc record with two 20 kHz channels must be encoded according to a particular set of matrix equations. A subjective weighting can be given to effects produced by different well-known matrixes and combinations thereof in the light of modern recording practice. This paper lists and discusses opinions formed as a result of such tests.

Author: Trendell, Edward G.
Affiliation: Central Research Laboratories, E.M.I. Ltd., London, England
AES Convention: 45 (May 1973) Paper Number: 912
Publication Date: May 1, 1973

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