int $number = decode_dtmf(string wavefile)

Hello,

I want to read a wav-file CCITT u-Law 64 kbit/s, 8Bit, Mono, 8 kHz into
PHP which contains a DTMF-Code and I want PHP to output the numbers, so
I am looking for a function like

int $number = decode_dtmf(string wavefile);

Is such a function available or is someone kind enough to code it under
the GPL?

Regards

Thilo Klein

PS: PHP5 is running on an apache webserver over here

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Thilo Klein [ Sa, 06 März 2010 21:18 ] [ ID #2034227 ]
PHP » gmane.comp.php.general » int $number = decode_dtmf(string wavefile)

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