* **dtmf.sh**: decodes DTMF signals in audio
* **histogram.pl**: shows goertzel output in ASCII graphs
* **histogram.sh**: example using histogram.pl to draw realtime equalizer
* **dtmf.sh**: decodes DTMF signals in audio
* **histogram.pl**: shows goertzel output in ASCII graphs
* **histogram.sh**: example using histogram.pl to draw realtime equalizer