1/3 octave warble or pink

mashaffer · 4th July 2008, 01:37 AM

I have been searching the net for test tones for speaker testing. I can find individual tones or full spectrum pink noise but I have yet to find 1/3 octave warble tones or 1/3 octave pink noise (pink limited to individual 1/3 octave bands). Are these things so hard/expensive to generate that there are none available outside of purchased CDs? I don't have appropriate software to generate my own. Audacity will make a white noise file that you can the filter but the filtering is pretty limited in effectiveness.

drewmc · 4th July 2008, 05:24 AM

Audacity allows the use of plug in filters. Look for the glam bandpass filters. These are FIR filters that can be set to any frequency. I created a set of 1/3 octave noise tracks using pink noise. When all the track are played simultaneously you cannot tell it from unfiltered pink noise.
I would send you the files except they are 307MB

Don Bunce · 4th July 2008, 10:21 PM

http://cgi.ebay.com/1-3-Octave-Pink-...QQcmdZViewItem

Irakli · 5th July 2008, 03:59 AM

Here is how to make warble tones yourself using Cool Edit.

http://mysite.verizon.net/tammie_eri.../coolwarb.html

4th July 2008, 01:37 AM	#1
mashaffer diyAudio Member Join Date: Jun 2004 Location: Indiana	1/3 octave warble or pink I have been searching the net for test tones for speaker testing. I can find individual tones or full spectrum pink noise but I have yet to find 1/3 octave warble tones or 1/3 octave pink noise (pink limited to individual 1/3 octave bands). Are these things so hard/expensive to generate that there are none available outside of purchased CDs? I don't have appropriate software to generate my own. Audacity will make a white noise file that you can the filter but the filtering is pretty limited in effectiveness. __________________ mike - www.keepingsundayspecial.org

5th July 2008, 03:59 AM	#4
Irakli diyAudio Member Join Date: Aug 2004 Location: washington, DC Blog Entries: 1	Here is how to make warble tones yourself using Cool Edit. http://mysite.verizon.net/tammie_eri.../coolwarb.html __________________ My System

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4th July 2008, 05:24 AM	#2
drewmc diyAudio Member Join Date: Jan 2006 Location: Granite state	Audacity allows the use of plug in filters. Look for the glam bandpass filters. These are FIR filters that can be set to any frequency. I created a set of 1/3 octave noise tracks using pink noise. When all the track are played simultaneously you cannot tell it from unfiltered pink noise. I would send you the files except they are 307MB

4th July 2008, 10:21 PM	#3
Don Bunce diyAudio Member Join Date: Mar 2007	http://cgi.ebay.com/1-3-Octave-Pink-...QQcmdZViewItem

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