Sound Pressure Level (SPL)

Technology / Home Audio / Sound Pressure Level (SPL): An acoustic measurement of sound energy. 1 db SPL is the smallest increment in sound level to which the average human is sensitive. Theoretically, 0 db SPL is the threshold of human hearing while approximately 120 db is the threshold of pain.
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Other Words for Level

Level Verb Synonyms: aim, point, draw a bead, direct, train, focus
Level Noun Synonyms: horizontal, prone, supine
Level Adjective Synonyms: even, smooth, plane, uniform, plain, flat, flush, straight, true
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Other Words for Pressure

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Pressure Adjective Synonyms: compression, pressing, squeezing, compressing, tension, stress, crushing
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Sound Verb Synonyms: undamaged, uninjured, whole, unmarred, in good condition or shape, intact, unimpaired, unscathed
Sound Adjective Synonyms: resound, reverberate, echo, resonate
Sound Noun Synonyms: tone, noise, din, cacophony, report
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