[simpits-tech] Real VOR indicator

[Freeman P. Pascal IV]

Do you have a sample of what it sounds like?  I would be interested in
hearing it.

-----Original Message-----
From: simpits-tech-bounces at simpits.org
[mailto:simpits-tech-bounces at simpits.org] On Behalf Of dabigboy at cox.net
Sent: Friday, February 15, 2013 10:37 AM
To: Simulator Cockpit Builder's List
Subject: Re: [simpits-tech] Real VOR indicator

Wayne, I just realized I did not respond to the first part of your question.

---- wledzian1 at comcast.net wrote: 
> Matt, 
> 
> Can you point me towards your reference material? I can't find anything
online more detailed than the Wikipedia article. 
> Are you generating WAVs with two fixed frequencies, or do your samples
include an FM-modulated 9960Hz and a phase-shifted 30Hz signal? 

The latter is the case. Well, you do end up with two distinct tones, but the
reference tone is made up of a 9960hz signal that is modulated at 30hz. The
"simple" 30hz tone is just a clean sine wave that is phase-shifted as many
degrees as the current VOR radial.

Most VOR indicators are looking for about 0.4vrms input (which is right
in-line with what a PC sound card puts out)....but if you pipe the signal
through speakers (that is, just play the WAVs like a regular audio file with
speakers connected), it sounds really funky. :)

Matt
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Thanks!