Audio levels
There is a restriction to the range of quiet to loud sounds that can be faithfully reproduced without distortion in any broadcast system. This limited audio dynamic range (similar to the contrast range of brightness variation) can be shifted up or down the spectrum of human hearing to record and transmit the required segment of sound intensities. It is possible to record the sound of a pin dropping or the sound of a passenger jet taking off but not both at the same time. It is necessary, as in exposure, to estimate the production requirements, choose the appropriate range of sounds and set the audio level accordingly. A limited amount of compression of the dynamic range can be achieved without distortion becoming obtrusive but any ...
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