What is the highest sound pressure possible? How many decibels is the loudest noise? Assumption: The maximum sound pressure that cannot be exceeded because the average air pressure is 101325 Pa. This sound pressure level is: L = 20 × log (101325 / 0.00002) = 194 dB SPL. Pay attention, RMS value is not peak value. A typical false statement: No noise levels can exceed 194 dB ever. Is the end at 194 dB? In addition to this perception threshold is discussed more often a physical limit to 194 dB. Sound is nothing more than a minor disturbance of air pressure and 194 dB is theoretically the same as the disturbance itself. It must be asymmetric. Even louder noise is possible, but heavily distorted. Thats chaos. This high sound pressure will break all measurement microphones and human beings are completely torn when they are close to the center of a nuclear explosion. No hearing protection (ear muffs or ear plugs) can help you there. These madness sound levels will never be measured but only estimated or calculated. Ultrasound between 20 kHz and 1.5 GHz does not belong to our human hearing. Infrasound below about 16 Hz is not audible for the human ear, but we can feel high sound levels.
Posted on: Sun, 09 Feb 2014 17:08:00 +0000
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