Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average or equilibrium) atmospheric pressure, caused by a sound...

air at atmospheric pressure, these represent sound waves with wavelengths of 17 meters (56 ft) to 1.7 centimeters (0.67 in). Sound waves above 20 kHz...

frequency and pressure in ordinary air, deviating slightly from ideal behavior. In colloquial speech, speed of sound refers to the speed of sound waves in...

: 445  Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure. Various units are used to express pressure. Some of these...

location as a sound energy quantity. Sound intensity is not the same physical quantity as sound pressure. Human hearing is sensitive to sound pressure which is...

Pressure Sounds is a British DIY record label, specialising in releasing reggae music. Run by Pete Holdsworth, it is one of the most enduring reggae labels...

A sound level meter (also called sound pressure level meter (SPL)) is used for acoustic measurements. It is commonly a hand-held instrument with a microphone...

also called sound. Sound pressure is the instantaneous local pressure deviation from the average pressure caused by a sound wave. Sound pressure can be measured...

volume of interest; p is the sound pressure; v is the particle velocity; ρ0 is the density of the medium without sound present; ρ is the local density...

subjective perception of sound pressure. More formally, it is defined as the "attribute of auditory sensation in terms of which sounds can be ordered on a...

unit time. It is defined as "through a surface, the product of the sound pressure, and the component of the particle velocity, at a point on the surface...

acoustic intensity of the muzzle report (sound of a gunshot) and jump, by modulating the speed and pressure of the propellant gas released from the muzzle...

What is a decibel? With sound files and animations Conversion of sound level units: dBSPL or dBA to sound pressure p and sound intensity J OSHA Regulations...

Rotary-pressure sounding is a method of testing soil conditions that might be performed as part of a geotechnical investigation. A series of rods, with...

received, per unit time Sound pressure level, measure of the effective pressure of a sound relative to a reference value Sound intensity level, measure...

echoes and resonances that cause reverberation. Sound-absorbing material controls reverberant sound pressure levels within a cavity, enclosure or room. Synthetic...

pascal is used to measure sound pressure. Loudness is the subjective experience of sound pressure and is measured as a sound pressure level (SPL) on a logarithmic...

sound pressure and does not contribute to the time-averaged energy or the intensity of the sound. The sound intensity is the product of the RMS sound...

Parametric array Sone (a unit of loudness of sound) Sonic screwdriver Sound intensity Sound power Sound pressure Ultrasonic welding Ultrasound "infrasound...

used today, which employ different methods to convert the air pressure variations of a sound wave to an electrical signal. The most common are the dynamic...

Korotkoff sounds are the sounds that medical personnel listen for when they are taking blood pressure using a non-invasive procedure. They are named after...

intensity range of audible sounds is enormous. Human eardrums are sensitive to variations in the sound pressure and can detect pressure changes from as small...

perceive infrasound, the sound pressure must be sufficiently high. Although the ear is the primary organ for sensing low sound, at higher intensities it...

explosion, or at the front of a supersonic aircraft. Near the source, the sound pressure level of thunder is usually 165 to 180 dB, but can exceed 200 dB in...

background sound pressure level at a given location, normally specified as a reference level to study a new intrusive sound source. Ambient sound levels are...

pressure at which sound becomes painful for a listener is the pain threshold pressure for that person at that time. The threshold pressure for sound varies...

Similarly, as the pressure in the right ventricle falls below the pressure in the pulmonary artery, the pulmonary valve closes. The S2 sound results from reverberation...

longitudinal wave of pressure as with sound, but it can also be a transverse wave as with the vibration of a taut string. When applied to a sound wave through...

of the gas, and pressure has little effect. Since air temperature and composition varies significantly with altitude, the speed of sound, and Mach numbers...

commonly expressed in terms of Sound Pressure Level or SPL. SPL is a logarithmic measure of the rms sound pressure of a sound relative to a reference value...