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Sound intensity information


Sound measurements
Characteristic
Symbols
 Sound pressure p, SPL, LPA
 Particle velocity v, SVL
 Particle displacement δ
 Sound intensity I, SIL
 Sound power P, SWL, LWA
 Sound energy W
 Sound energy density w
 Sound exposure E, SEL
 Acoustic impedance Z
 Audio frequency AF
 Transmission loss TL

Sound intensity, also known as acoustic intensity, is defined as the power carried by sound waves per unit area in a direction perpendicular to that area. The SI unit of intensity, which includes sound intensity, is the watt per square meter (W/m2). One application is the noise measurement of sound intensity in the air at a listener's location as a sound energy quantity.[1]

Sound intensity is not the same physical quantity as sound pressure. Human hearing is sensitive to sound pressure which is related to sound intensity. In consumer audio electronics, the level differences are called "intensity" differences, but sound intensity is a specifically defined quantity and cannot be sensed by a simple microphone.

Sound intensity level is a logarithmic expression of sound intensity relative to a reference intensity.

  1. ^ "Sound Intensity". Retrieved 22 April 2015.

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a sound wave, the complementary variable to sound pressure is the particle velocity. Together, they determine the sound intensity of the wave. Sound intensity...

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Particle displacement Particle velocity Sound energy flux Sound impedance Sound intensity level Sound power Sound power level Units dB, decibel sone - perceived...

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Sound level

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

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Intensity

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measure of earthquake acceleration (g or m/s2) Sound intensity, sound power per unit area Value intensity in philosophy and ethics In video luminous emittance...

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

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Decibel

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difference in reference value. Sound intensity is proportional to the square of sound pressure. Therefore the sound intensity level can also be defined as:...

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Sound power

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device. Sound power is related to sound intensity: P = A I , {\displaystyle P=AI,} where A stands for the area; I stands for the sound intensity. Sound power...

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Sound energy

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In physics, sound energy is a form of energy that can be heard by living things. Only those waves that have a frequency of 16 Hz to 20 kHz are audible...

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with physical measures of sound strength such as sound pressure, sound pressure level (in decibels), sound intensity or sound power. Weighting filters...

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reduction in sound intensity between the sound source and a receiver, defined as the difference between the source level and the sound pressure level...

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low frequency sound topped out at 240 m/s (790 ft/s). When sound spreads out evenly in all directions in three dimensions, the intensity drops in proportion...

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Sound energy density

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№ DIN 1320:2009-12 (Berlin: Beuth, 2009‑12). Conversion: sound intensity to sound intensity level Ohm's law as acoustic equivalent - calculations Relationships...

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reported in reference to the RMS sound pressure of 20 micropascals, i.e. 0 dB SPL, corresponding to a sound intensity of 0.98 pW/m2 at 1 atmosphere and...

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Underwater acoustics

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the minimum sound speed. The sound speed profile may cause regions of low sound intensity called "Shadow Zones", and regions of high intensity called "Caustics"...

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limited only by the scattering profile of their physical dimensions. Sound intensity or sound power measurements require pressure-gradient measurements, which...

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directly to TTL outputs, although more complex drivers can give greater sound intensity. Typically they operate well in the range of 1-5 kHz and up to 100 kHz...

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microphones at different time instants and at different sound intensities that depend on both the sound source location and the microphone location. One popular...

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formed. The sound intensity from these shock waves depends on the size of the rocket as well as the exhaust velocity. The sound intensity of large, high...

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Thunder

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Pollet and Micheal M. Kordich (2013-04-08). "User's guide for the Sound Intensity Prediction System (SIPS) as installed at the Naval Explosive Ordnance...

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human. The SI unit of frequency is the hertz (Hz). It is the property of sound that most determines pitch. The generally accepted standard hearing range...

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Audiometry

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audiology and the science of measuring hearing acuity for variations in sound intensity and pitch and for tonal purity, involving thresholds and differing...

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in air against gravity using acoustic radiation pressure from high intensity sound waves. It works on the same principles as acoustic tweezers by harnessing...

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