The purpose of noise masking systems is, simply, to mask noise. In the quiet, non-reverberant office spaces, conversations can be unintentionally overheard; invading privacy and mechanical or man-made noises can become disruptive to the work effort. When properly installed and balanced, the noise masking system makes these noises less noticeable. This can increase efficiency of the workforce as well as privacy.
Direct sound, so important for speech intelligibility in paging or reinforcement systems, is undesirable in masking systems. Loudspeakers, completely separate from paging loudspeakers, are throughout the area. They are sometimes oriented horizontally to improve dispersion and avoid a spatial concentration of volume. When used properly, employees will not notice the installation at all, just that disruptive noises seem to be less noticeable.
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