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imd1engg
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Conversion of Sound Power to Sound Pressure Level

10/23/2010 3:55 AM

I need the formula
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user-deleted-1105
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#1

Re: conversion of sound power to sound pressure level

10/23/2010 4:34 AM

I don't think there is one.
As far as I know SPL needs actually measuring, ideally using a dummy head (yes seriously) as it is dependant on the accoustics of the environment.
Del

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lyn
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#2

Re: conversion of sound power to sound pressure level

10/23/2010 8:47 AM

Depending on the test procedure and what you are actually trying to measure, you might use a device such as the one below, as suggested by Del.

B&K 4128 HATS - Head and Torso Simulator

For actual sound measurements at the source of the noise a sound intensity probe is used.

This site gives an excellent presentation on the math of sound.

Sound Power, Intensity and Pressure

Acoustics in an extremely complicated field.
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user-deleted-1105
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#3
In reply to #2

Re: conversion of sound power to sound pressure level

10/23/2010 10:47 AM

At last a picture of someone sensible to talk to
Del

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lyn
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#4
In reply to #3

Re: conversion of sound power to sound pressure level

10/23/2010 10:52 AM

They never talk back, and for variety, you can change the ears.

Unfortunately they are very expensive.
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pritam
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Engineering Fields - Mechanical Engineering - New Member India - Member - New Member

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#5

Re: Conversion of Sound Power to Sound Pressure Level

10/30/2010 7:02 AM

Sound Power(W)/ Area(m2) = Sound Pressure(Pa) x Particle Velocity(m/s)

Sound Level (dB) = 10log(base10) [Sound power x 10^12]

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