With the imminent reality of multichannel television sound (MTS) braodcasting, there is an urgent need to resolve some of the concerns frequently posed by broadcast engineers with regard to: 1) the spatial qualities of the M/S miking technique, and 2) the practicality of implementing the sum-and-difference (rather than the discrete left/right) mode of transmitting the stereo program signals throughout the broadcast plant. This paper will demonstrate the effective channel separation realized in a real-world situation, by recording on a working television studio set a sound source at various angles about an M/S microphone array, logging and tabulating the signal levels for M (L + R) and S (L - R), and then plotting the resultant signal levels for L and R for each of the angular locations. The authors will then demonstrate that the potential for down-line degradation of the original stereo program is minimized by implementing the sum-and-difference transmission mode.

Authors: Streicher, Ron; Burden, Richard
Affiliations: Pacific Audio-Visual Enterprises, Monrovia, CA ; Burden Associates, Canoga Park, CA(See document for exact affiliation information.)
AES Convention: 78 (May 1985) Paper Number: 2253
Publication Date: May 1, 1985 Import into BibTeX
Subject: Audio Engineering in Broadcasting
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=11502

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