sound measurements

jonharoy · Post by **jonharoy** » Thu Jun 08, 2006 9:04 am

Any one use the sound card on a PC to make measurements? Is it possible to make accurate measurements with the addition of a good mike?

Post by **silencertalk** » Thu Jun 08, 2006 2:59 pm

Yes, it is possible. I did it. The proper mic will cost $800 or more. Also not all sound cards are good enough. You need to run a test signal through it into an oscilloscope to make sure it has a short enough rise time.

jonharoy · Post by **jonharoy** » Thu Jun 08, 2006 3:22 pm

Eventually when my suppresser is done I will be wanting to test it for performance. I take my laptop now for pressure and speed measurement.

Artful · Post by **Artful** » Fri Jun 09, 2006 12:00 am

rsilvers wrote:Yes, it is possible. I did it. The proper mic will cost $800 or more. Also not all sound cards are good enough. You need to run a test signal through it into an oscilloscope to make sure it has a short enough rise time.

So which sound cards have passed the test?

And which Mic works correctly? or is this one the only one?
GRAS pressure measurement microphone model 40BP (Bruel & Kjaer model 4136 equivalent)

Post by **silencertalk** » Fri Jun 09, 2006 8:04 am

Grass

B+K

Larson Davis

http://www.norsonic.com/ProductsAndUses ... 60&nivaa=3

www.acopacific.com/micsystems.html

Microtech Gefell