Power/Intensity vs. Pressure

Defining Power, Intensity, and Pressure It is not uncommon to hear individuals involved with hearing aids use terminology related to sound levels incorrectly, especially power, intensity, and pressure.  This, in spite of the fact that most hearing professionals had been exposed to proper use of such terms early in their careers. This post is a…

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Sound Quantification II

This post continues a series on the origins  of initial sound quantification.  Last week’s post related to how the speed of sound was measured.  This week continues with frequency analysis and amplitude. Frequency Analysis of Sound The Italian scientist Galileo (1564-1642) pulled a knife blade across the serrated edge of a coin and noted the…

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