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Science > Acoustics

Fletcher-Munson curves

Science; Acoustics

In the 1930s Fletcher and Munson, after extensive testing produced their equal loudness contours to relate a decibel reading, at a given frequency to loudness. They called this ...

integrating

Science; Acoustics

Indicating the mean value or total sum of a measured quantity.

volume velocity

Science; Acoustics

Integral, over a vibration surface, of the product of the component of particle velocity normal to the surface and the differential surface area.

pulse rise time

Science; Acoustics

Interval of time required for the leading edge of a pulse to rise from some specified small fraction to some specified larger fraction of the maximum value.

scattering

Science; Acoustics

Irregular diffraction and reflection of a sound wave in many directions.

directivity index (DI)

Science; Acoustics

Directivity index is 10 times the logarithm to the base 10 of the directivity factor Q. Say for example we buy a piece of equipment with a sound power rating of 80 dB and we ...