From: Xela@yabbs
To: Dprogram@yabbs
Subject: digital tones
Date: Fri Mar 18 13:47:49 1994

My frined has a mac program which can generate digital tones using the 
mathematical formulas which determine the tones in the first place.  I 
believe it uses a Fourier series to approximate the tones that crystal 
makes.  Anyway, we fed the tones into my pearlcorder and off to the pay 
phone!  DAT recording through an optical feed would be even better, but a 
DAT recorder costs 800 dollars and the optical line costs another 50, so 
it isn't cheap.  And you would have to have an optical output from the 
mac, or pc (whatever you happen to use).

L8rs,
Alex