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Old 25th August 2009, 08:56 PM   #1
percy is offline percy  United States
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Default Adjustable octave warble tone generator

Does anyone of a (free) software tone generator that will let me select not just the frequency of the warble tone but also how many octaves. Typically its 1/3 octave, but I'd like to use smaller octaves like 1/6th, 1/24th...
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Old 25th August 2009, 09:15 PM   #2
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Originally Posted by percy View Post
Does anyone of a (free) software tone generator that will let me select not just the frequency of the warble tone but also how many octaves. Typically its 1/3 octave, but I'd like to use smaller octaves like 1/6th, 1/24th...
Do you know the Crawford Warble Oscillator published in Audio Amateur (many) years ago? Hardware....

jd
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Old 26th August 2009, 02:32 AM   #3
percy is offline percy  United States
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No I dont, but I googled it up and found a couple of references. It was published in AudioXpress in '79, by Dick Crawford. http://www.audioxpress.com/bksprods/products/pcbk-3.htm

Is this the one ?

I wish there was some more additional information available. What kind of octave spread adjustment does it have ?

While searching for this I also happened to run into another interesting device made by the same author - http://www.audioxpress.com/bksprods/products/pcbc-6.htm .
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Old 27th August 2009, 07:08 PM   #4
percy is offline percy  United States
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Default Speaker Workshop !

Speaker Workshop to the rescue!
good ol' SW has a signal generator that can do warble tones and will let you adjust the range!
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Old 27th August 2009, 08:30 PM   #5
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Speaker Workshop to the rescue!
good ol' SW has a signal generator that can do warble tones and will let you adjust the range!
OK, I was going to dig out my AA's but it seems you've served well already!

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Old 1st September 2009, 08:30 AM   #6
dangus is offline dangus  Canada
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Burn a CD with warble tones, generated with Cooledit or something? Or there's some test CDs that have warble tones or band-limited pink noise. Denon Audio Technical CD, for one. If it's out of print, evil people may have shared it as a torrent or something. There's some freeware audio test CDs too.

If you burn them as MP3s, an MP3 player would display the name (so you wouldn't need to count tracks on a CD player). A small (32M) (obsolete) flash player should be more than enough space.

Last edited by dangus; 1st September 2009 at 08:34 AM.
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Old 3rd December 2010, 01:03 PM   #7
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Originally Posted by percy View Post
Speaker Workshop to the rescue!
good ol' SW has a signal generator that can do warble tones and will let you adjust the range!
How does one bring up that dialog? I looked at the help page for it. It does not say how to navigate to it.

Thankee.

Edit: I figured out how to make the dialog come up. Now how do I play the tone? The "Apply" button is grayed out, BTW.
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Last edited by Dave Jones; 3rd December 2010 at 01:19 PM.
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Old 3rd December 2010, 01:44 PM   #8
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Trying to get Speaker Workshop to generate a warble tone. Here's what I've done:

1. I go, "Resource/New/Signal" and create a new signal. It shows up in the project, but it contains a default signal, a sine wave.

2. I click on the signal resource in the project window, and click on the "Edit properties" button.

3. The advertised dialog comes up, but when I click on the "Warble" tab, the "Apply" button is grayed out, so I cannot change the signal to a warble tone.

4. I scratch and cuss.
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Old 3rd December 2010, 04:00 PM   #9
LAJ is offline LAJ  United States
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I built a step-tone generator several years ago. It uses the XR2206 whose frequency control pin is select different resistances (pots) via a cmos multiplexer driven by a counter and a 1 Hz clock. Each of 8 tones is on for 1 sec and then repeats.
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