sound pressure


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sound pressure

n.
The varying difference, at a fixed point in a given medium, between the pressure caused by a sound wave and either atmospheric pressure or the average pressure of the medium.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sound pressure - the difference between the instantaneous pressure at a point in a sound field and the average pressure at that point
force per unit area, pressure, pressure level - the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit); "the compressed gas exerts an increased pressure"
References in periodicals archive ?
Using XENSIV MEMS microphones, far-field and whispered voice pick-up performance can be achieved with a signal to noise ratio of 69 dB, and exceptionally low distortion of less than 1% up to 128 dB sound pressure level.
The Silent-SR ISB reduces sound pressure levels of standard-velocity .
Xiao et al [1,4] obtained the frequency dependent sound pressure level (SPL) and total harmonic distortion (THD) for different layers CNT loudspeaker.
Hair near the ears will create localized sound pressure, so it is likely to be heard," the authors write.
Meanwhile, sound pressure level is a measure of the air vibrations that make up sound.
Secondly, noise characteristics of manual transmission gear rattle is analyzed by time-frequency results of vibration acceleration and sound pressure.
Measured sound pressure levels associated with air gun pulses were low and usually undetectable close to the fyke nets, reflecting the loss of low frequencies in shallow water (~1.
The researchers first demonstrated a hologram that generates sound pressure in the shape of Pablo Picasso's 'Dove of Peace', using micro-particles suspended in a liquid that follow the pattern and form the image.
A non-linear back propagation artificial neural network (BPANN) is then modeled for the prediction of subjective Distraction Level, in which linear sound pressure RMS amplitudes of five Critical Band Rates (CBRs) from 20 to 500Hz are selected as inputs of the model.
The sound pressure level measurements are useful if the measurements can be made for one or for at least part of sources.