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Looking for free on-line test tone generator.

post #1 of 11
Thread Starter 
I'm 1) cheap, and 2) need to be sure my system is tuned right.

I was hoping someone would be able to refer me to a site (I have a Mac) I have already used the free trial of Tone Gen and now can't use it again.
post #2 of 11
It would be cool to have a PC version of this also.
post #3 of 11
Don't know about Macs but these might help:

http://www.audiocheck.net/
http://binkster.net/extras.shtml

Google is your friend -- there are a ton of them on the 'net.
post #4 of 11
This old thread is the #1 result that comes up when people are looking for a free online test tone generator. Here is an update, with another useful resource:

http://www.wavTones.com

It offers a waveform generator (pure tone, square, ...), burst tones, sweep generator, noise generator, narrow-band noises, and more...
Edited by Hato70 - 12/4/12 at 11:40pm
post #5 of 11
Quote:
Originally Posted by m-heat View Post

I'm 1) cheap, and 2) need to be sure my system is tuned right.


I was hoping someone would be able to refer me to a site (I have a Mac) I have already used the free trial of Tone Gen and now can't use it again.

The best way to obtain test tones is to make your own test CDs.

The best free tool for making test tone files is probably Audacity which runs on just about any kind of computer system, even Macs.

Just about every computer system has some kind of tool for burning audio CDs.

Enjoy!

Now that we're talking about testing, remember that pure tones are generally very poor tools for doing acoustical testing. IOW any kind of a test that involves a SPL meter or a microphone and some kind of analysis program.

The problem with pure tones is that they are very susceptible to standing waves that create very narrrow band disturbances. You might measure so many dB at 1000 Hz, and something completely different at 1010 Hz,

The analytical software that many of us commonly use such as REW avoid this problem by not testing with pure steady sine waves. If you are working with a SPL meter the better choice of test signals would usually be warble tones or narrow bands of noise. You can generate these either with Audacity and some freebie plug ins that are easy to find on the web.
post #6 of 11
I generally use something like goldwave to generate tones and sweeps. Not sure if its available for the mac.

it has a free trial.

another nice thing is that you can make a tone, and loop it easily. I did this recently to find the source of clipping in my signal chain at 16Hz.
post #7 of 11
post #8 of 11
Quote:
Originally Posted by craig john View Post

http://www.realtraps.com/test-cd.htm

It appears that these are sweep tones over carefully chosen ranges, which are generally very good to use.
post #9 of 11
Why not reference REW? Signal generator works fine for me...
http://www.hometheatershack.com/roomeq/
post #10 of 11
FWIW, you can possibly use this online tuning fork. http://www.seventhstring.com/tuningfork/tuningfork.html

If you transpose -12 semitones, you can get down to 32 Hz, but I don't see a way to get lower.
post #11 of 11
Quote:
Originally Posted by arnyk View Post

It appears that these are sweep tones over carefully chosen ranges, which are generally very good to use.
They're individual frequency tones in 1 Hz increments, with 10 Hz to a "track". Each frequency plays for 10 seconds. So no, they're not "sweeps."

Craig
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