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National Association of Broadcasters Engineering Handbook, 11th Edition by Garrison C. Cavell

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Chapter7.2

Transmission Audio Processing

Robert Orban

Orban Labs, Inc.

Pennsauken, NJ

Introduction

Transmission audio processing is both an engineering and artistic discipline. The engineering goal is to make most efficient use of the signal-to-noise ratio and audio bandwidth available from the transmission channel while preventing its overmodulation. The organization using audio processing sets the artistic goal. It may be to avoid audibly modifying the original program material at all, or it may be to create a distinct sonic signature for a broadcast by radically changing the sound of the original. Most broadcasters operate somewhere in between these two extremes.

If the transmitted signal meets regulatory requirements for modulation control ...

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