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General audio topics that don't fit into specific categories.

Yes.

The low limit comes from Brownian motion of the air. The amplitude measured will depend on the size of the detector (eardrum or microphone) and the bandwidth used for hearing an individual sound. The high limit comes from the limits of atmospheric pressure and the speed of sound. A little Googling showed these physical limits as -24 dB and +194 dB. Higher levels are possible in the form of shock waves (e.g. explosions).

There have been studies showing the peak SPLs at an orchestral concert reaching SPLs of 122 dB (e.g. Mahler's 8th symphony). Human hearing can hear sounds down to about -9 dB at some frequencies.

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar


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