Creating test wav files for SPL meter

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mxv146

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maheshkv.com
#1
Hello folks,

I would like to measure the frequency response of a speaker enclosure that I am trying to build. The recommended way seems to be to use an SPL meter and test CD to do it. Being in India, I can find neither the Radio Shack SPL meter nor Test CDs (like Riva). I managed to locate a vendor who makes Sound level meters (CYGNET systems, Bangalore), but am yet to get one in hand. What do these test CDs have? I am guessing they will have bursts of single frequency tones? Could I generate wav files for these tones maybe convert them to CD format and do the test? Any ideas on how to do this is appreciated!

Thanks

Mahesh
 
#2
I would use Cool Edit. It's a great WAV editor, that has a ton of options for generating any kind of test tone you could think of. There should still be some downloadable versions floating around the net. They were recently bought by Adobe and are now called Adobe Audition, but the old Cool Edit Pro versions are just as powerful for what you want. I'll see if I can find somewhere you can download an older version.

Alternately, if you're not offended by piracy, I've seen several copies of test tone CD's and Adobe Audition on Suprnova.org that you can download via BitTorrent.
 
#4
I use the TTG Test Tone Generator and just run it from my computer intead of creating disks. Using a disk gives you no flexibility and changing things as you go is really nice for honing in on trouble spots. Pay attention to what you are hearing and don't just focus on the SPL meter. This will help train your ears which are far sensitive, you just need to calibrate them.

I find the Test Tone Generator an invaluable tool and use it much more frequently than I use my SPL meter.
 
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