Thanks for this little tidbit.  I was recently thinking about adding DTMF tones to a synth I'm building, and now I know how.  Thanks again. 

                                                                                   Mark 



----- Original Message ----
From: Jacob Joaquin 
To: csound@lists.bath.ac.uk
Sent: Wednesday, July 2, 2008 6:32:18 PM
Subject: [Csnd]  [CsoundBlog] Touch-Tone DTMF Generator


Hello fellow Csounders, 

After a really long break, I've finally gotten around to putting up a new
post at the Csound Blog. Here's an excerpt: 

"Most people would never think of a touch-tone phone
as being an additive synthesizer. Though it may be
primitive, a phone does generate tones using two
sine wave oscillators, which in my humble opinion,
qualifies it as such.

However, I'm not here to debate the semantics of
whether or not a phone is a synthesizer. Instead,
I'm here to demonstrate how easy it is to emulate
the sounds of the touch-tone phone."

Touch-Tone DTMF Generator
http://www.thumbuki.com/csound/files/thumbuki20080602.csd

The Csound Blog 
http://www.thumbuki.com/csound/blog/  

Any and all feedback is appreciated.  Enjoy! 

Best,
Jake


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