perceived noise decibel definition, perceived noise decibel meaning | English dictionary

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perceived noise decibel


      n   a unit for measuring perceived levels of noise by comparison with the sound pressure level of a reference sound judged equally noisy by a normal listener,   (Abbrev.)    PNdB  
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perceived visually
E.g. How much of the info taken in by the eye do we memorize? (meaning: How much of what we see do we remember?)
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