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A query to the selected Sound object.
the intensity in air, expressed in dB relative to the auditory threshold.
The intensity of a sound in air is defined as
10 log10 { 1 / (T P02) ∫dt x2(t) } |
where x(t) is the sound pressure in units of Pa (Pascal), T is the duration of the sound, and P0 = 2·10-5 Pa is the auditory threshold pressure. For how stereo sounds are handled, see Sound: Get energy....
For the intensity in Watt/m2, see Sound: Get power in air. For an auditory intensity, see Excitation: Get loudness.
© Paul Boersma 2007-01-29