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Micropascals

The unit of pressure commonly used in acoustics is the micropascal (1 μPa = 1 μN/m2 = 10−5 dyne/cm2 .. "What is acoustic impedance and why is it important ?

Micropascals is described in multiple online sources, as addition to our editors' articles, see section below for printable documents, Micropascals books and related discussion.

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What are Decibels
hearing which happens to be 0 dB = 20 microPascals (20 μPa ) – a mathematically more convenient number – to a reference point of 0 dB = 1 microPascal.
Audiology Refresher - 0.13.qxd
Sound pressure is measured in microPascals. The range of audible sound is from is 20 microPascals and this is the reference 0 in dBSPL. Figure 2.
Sound Power and Pressure Measurements
usually chosen as 20 micropascals, or 0.02 mPa. (This is very low: it is 2 ten times smaller than the reference pressure, ie 2 micropascals.
Acoustic and Auditory Phonetics Chapter 3
Feb 24, 2011 Normal speech signals range from 600 micro pascals to 2 pascals.
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All SPL measurements are in dB re 20 micro pascals. Airbome noise measurements were made. Airborne Sound Transmission (Floors).

Suggested News Resources

Le futur son et lumiere de Vincent Handrey sur la bataille de 1712au coeur des
Venu enfin au micro, Pascal Jean a salué les cinquante bénévoles de l'association Les Visiteurs de l'Escaut, créée pour cet événement, qu'il a qualifié de véritable expérience humaine.

Suggested Web Resources

Pascals to Micropascals Conversion Calculator
Use the following calculator to convert between pascals and micropascals.
Pascal (unit) - Wikipedia, the free encyclopedia
Measurement unit conversion: micropascal
Micropascal is a measure of pressure.
What is a decibel?
For sound intensity, the reference level (for air) is usually chosen as 20 micropascals, or 0.02 mPa. (This is very low: it is 2 ten billionths of an atmosphere.
What are Decibels
hearing which happens to be 0 dB = 20 microPascals (20 μPa ) – a mathematically more convenient number – to a reference point of 0 dB = 1 microPascal.

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