Newsgroups: comp.speech
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From: wncjgr@cti.wnc.nedlloyd.nl (Jilles Groenendijk)
Subject: DTMF recognition
Message-ID: <C2p0A0.GL4@cti.wnc.nedlloyd.nl>
Summary: DTMF recognition
Keywords: DTMF
Organization: Nedlloyd Computer Services
Date: Fri, 19 Feb 1993 11:08:23 GMT
Lines: 11

Can someone give me some hints, ands tips on the following problem:

I'd like to make a DOS program which can recognise Dail-Tone-Multi-Frequency tones. What I want to do is connect my Telephone to my Soundblaster card, and let the program find out, what numbers are pressed. This could either be real-time. Or afterwards.

The DTMF works with a matrix of 4 x 4 frequencies.

I made the piece of hardware requered.
And I am thinking of a program that compares the tone (sample) it just got, with the 16 possibilities on the harddisk, or in a array. 

greetings,
Jilles Groenendijk.
