TrueRTA

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  • Updated 1 year ago
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  • (Edited)
I was looking for some software to analyze received audio on my 6700, to see if I could quantify what my ears hear. I came across True RTA (www.trueaudio.com). This is a real time spectrum analyzer. The free version has 1 octave resolution. The pay versions have increasing resolution (1/3 octave $39.99, 1/6 octave $69.99, 1/24 octave $99.99). The free version seems to work smoothly when fed with a DAX input.

Has anyone used the pay versions of this software? Are there alternatives?
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Mark Erbaugh

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Posted 1 year ago

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Gary Wise

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Hey Mark - I recently purchased the 1/3 octave version of the software. It works great. I wanted to confirm what was reported to me on the air that the dynamic mike element that I was using in my Radiosport headset had a very limited audio bandwidth. The audio spectrum display confirmed this. Switching to the Electret Condenser mike element showed much broader response (especially on the low end).

One nice thing is that you can load the software on multiple computers. I put it on a laptop on my test bench and it works as a piece of test equipment there.
Note that once you buy the increased resolution, you must manually select it in the main screen (on the right side). Otherwise it will stay in the Full Octave mode.
73 - Gary W4EEY
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Mark Erbaugh

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Thanks for the info.
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Dan -- KC4GO

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I have used this for some time. http://dl4yhf.darc.de/spectra1.html#download (it's also a free to use version)
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Mark Erbaugh

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Thanks, that looks like it might work - and the price is better.