>Hello to all,
>
>who has already done DTMF recognition with ALSA ( OSS )?
>I searched for examples in google, but I have found that
>only in TODO lists ;-(.
>
>Is this so difficult or why doesn't exist anything about that?

its a relatively trivial FFT problem. use FFTW to analyse the signal,
then look for two predominant frequencies, and check their values
against a table.

believe it or not, there are many, many things that have never been
written in the open source arena.

--p



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