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Feb 23, 2018, 08:12 PM
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Shepard Tone Vario for OpenTX

The Shepard Tone Vario is pretty-much ready and will be released after some of my friends have tested it.

Version #1 was an attempt to create Shepard tones using the limited sound capabilities of the playTone() function of OpenTX Lua, but that didn't work out very well. The latest version uses a set of 100 WAV files that I spent many hours creating using a combination of several tools, including Audacity. This will almost certainly undergo further refinement but I believe it's quite functional in its current form.

Credit for the idea goes to Helmut Stettmaier, who describes it in the March 2018 issue of Radio Controlled Soaring Digest. Please read his article for more information.

Shepard Tone Vario Demo (5 min 54 sec)

Some Shepard tone videos:

The sound illusion that makes Dunkirk so intense (3 min 2 sec)

These are Shepard-Risset Glissandos, rising:

Shepard Tone (5 min 1 sec)

and falling:

Shepard Tones - Falling (2 min 1 sec)

Here's the complete package with instructions for the Shepard Tone Vario.

Last edited by Miami Mike; Nov 29, 2018 at 03:06 PM.
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