sound pressure spectrum level

sound pressure spectrum level

[¦sau̇nd ‚presh·ər ′spek·trəm ‚lev·əl]
(acoustics)
Ten times the logarithm to base 10 of the ratio of the mean square pressure of the portion of sound within a specified frequency band to the mean square pressure of the portion of a reference sound within the same frequency band. Abbreviated SPSL.
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