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sound pressure level

sound pressure level

sound pressure level

(OP)
Is it possible to measure analytically the sound pressure difference between two end of pipe? if yes how?

((I need to compare with the practically measured one using microphone, FFT - definitely would be T-loss, power difference not the pressure)

RE: sound pressure level

Yup, there's a standard result for the power in a duct from a pressure measurement, if that is what you mean. I don't know it off the top if my head, it is in any standard acooustics book that deals with ducts.

Cheers

Greg Locock

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RE: sound pressure level

(OP)
I don't want to correlate sound pressure & power.
But, want to calculate how much attenuation(sound pressure level difference)can get between ends of pipe using analytical method.

I was wondering if anyway, by using length & dia will help me to caluclate how much attenuate i can get?

(Sound Pressure level = 20 log P/P0, Sound power level - 10 log (W/W0))

RE: sound pressure level

you might find something about this in Krautkramer (Ultrasonic testing of materials)

Sorry don't know it from the top of my head.

RE: sound pressure level

johnab, you need to read a basic acoustics book. Transmission Loss of cylindrical ducts is a standard case.

Cheers

Greg Locock

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