jk60LPTH
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The deep dive that Adinol posted is based on a law developed based on the work of a physician/physiologist and a psychologist/physicist in the 1800's, the Weber-Fechner Law. The law basically states that the response of a sense organ is proportional to the logarithm of the stimulus. In simple terms, at lower levels of audio a smaller change in source audio level is required for the same perceived change in audio level than at higher levels of source audio where a much larger change in the source audio level is required for the same perceived level of change.
The law is accurate over most of the range of human hearing, but at the extremes deviates slightly, however, considering the tools available at Weber and Fechner's time their law was remarkably accurate.
The law is accurate over most of the range of human hearing, but at the extremes deviates slightly, however, considering the tools available at Weber and Fechner's time their law was remarkably accurate.