Creating test wav files for SPL meter

mxv146 · 20th November 2004, 07:20 AM

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

faithblinded · 20th November 2004, 11:49 AM

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.

faithblinded · 20th November 2004, 11:53 AM

Here's a link to Adobe Audition on Download.com. Apparently there is still a shareware version, that would probably work long enough for you to generate a bevvy of test tones:

http://www.download.com/Adobe-Auditi...ml?tag=lst-0-1

johninCR · 20th November 2004, 01:34 PM

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.

faithblinded · 20th November 2004, 02:12 PM

TTG sounds like a good option too. I'm gonna have to d/l it and check it out.
Here's a link to their site, which has a downloadable shareware version:
http://www.esser.u-net.com/ttg.htm

Spearmint · 20th November 2004, 08:58 PM

You can download ready made files from here...

http://www.snapbug.ws/sinewaves/

and

http://hsuresearch.com/mp3/

20th November 2004, 07:20 AM	#1
mxv146 diyAudio Member Join Date: Oct 2004	Creating test wav files for SPL meter 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

20th November 2004, 01:34 PM	#4
johninCR diyAudio Member Join Date: Apr 2004 Location: Costa Rica	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. __________________ Everyone has a photographic memory. It's just that most are out of film.

20th November 2004, 08:58 PM	#6
Spearmint diyAudio Member Join Date: Feb 2004 Location: Melbourne ~ Australia	You can download ready made files from here... http://www.snapbug.ws/sinewaves/ and http://hsuresearch.com/mp3/ __________________ Cheers; Spearmint...

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20th November 2004, 11:49 AM	#2
faithblinded diyAudio Member Join Date: Dec 2003 Location: in a hole	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.

20th November 2004, 11:53 AM	#3
faithblinded diyAudio Member Join Date: Dec 2003 Location: in a hole	Here's a link to Adobe Audition on Download.com. Apparently there is still a shareware version, that would probably work long enough for you to generate a bevvy of test tones: http://www.download.com/Adobe-Auditi...ml?tag=lst-0-1

20th November 2004, 02:12 PM	#5
faithblinded diyAudio Member Join Date: Dec 2003 Location: in a hole	TTG sounds like a good option too. I'm gonna have to d/l it and check it out. Here's a link to their site, which has a downloadable shareware version: http://www.esser.u-net.com/ttg.htm

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