Search results with tag "Levels of typical"

Noise Guidelines - San Diego County, California

Sound levels of typical community noise sources and community noise environment are illustrated in Attachment A. However, the average person can perceive a change of +/-3 dB. A change of +/-5 dB is readily perceptible and a change of +10 dB is perceived as twice as loud. Noise can have both human health and quality of life effects. At 130

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