[asterisk-users] tones detection

[John Rose]

How about a generic beep detector? One that detects beeps at various frequencies not fixed frequencies that would listen to the RTP audio stream and send out a manager event when a detection occurs?

John

> -----Original Message-----
> 
> Hi Jerry,
> 
> On Thu, Apr 8, 2010 at 6:54 PM, Jerry Geis <geisj at pagestation.com>
> wrote:
> > I am looking for something in asterisk that
> > will let me record a wav file  in asterisk (which I know how to do)
> > then some other command (external or dialplan) that would read
> > the wave file and tell me if a certain tone or frequency is present.
> >
> > Is this in asterisk already -  any way to do it?
> > Thanks
> 
> You might want to look into the PipeWave tools:
> http://www.cardiff.ac.uk/psych/home2/CullingJ/pipewave.html
> 
> The tools can generate a FFT (fast-fourier transform) of a wav file
> which converts the data into the frequency domain, which should allow
> you to tell if a certain frequency is present.
> 
> -- James
> 
> >
> > Jerry
> 
> --