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Consumer Electronics by S. P. Bali

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INDOOR ACOUSTICS

The variety of situations that can be encountered indoors is virtually infinite. Studies in acoustics have established certain ideal characteristics, according to building size and the purpose or kind of sound that will make up program. At best these provide only guidelines.

The ultimate sound reproduced is a quite complex wave system, propagated through space. In any indoor installation, every listener, or member of the audience, should hear first a direct sound at every component frequency, and then an appropriate amount of reverberation, or reinforcement of the same complex sound. If there is no reverberative reinforcement the sound seems unnatural; if there is too much of the direct sound, it is not strong enough to be intelligible. ...

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