Noun
the difference between the instantaneous pressure at a point in a sound field and the average pressure at that point
Source: WordNetAgencies sometimes use sound suppressors for maneuvers in which it is anticipated that shots may be fired indoors, because the sound pressure from indoor firing can be deafening. Source: Internet
An RMS sound pressure of one pascal corresponds to a level of 94 dB SPL. Source: Internet
For example, the decibel is a unit quantifying signal power log-ratios and amplitude log-ratios (of which sound pressure is a common example). Source: Internet
Function One consequence of the configuration of the outer ear is selectively to boost the sound pressure 30- to 100-fold for frequencies around 3 kHz. Source: Internet
It is used primarily in its decadic fraction, the decibel (dB), for signal strength and sound pressure level measurements, while a unit for one tenth of a byte, the decibyte, can only be used in derived units, such as transmission rates. Source: Internet
Since the effective vibratory area of the eardrum is about 14 fold larger than that of the oval window, the sound pressure is concentrated, leading to a pressure gain of at least 18.1. Source: Internet