This laboratory introduced a practical application where sinusoidal signals were used to transmit information: a touch-tone dialer. Bandpass FIR ï¬lters were used to extract the information encoded in the waveforms. The goal of this project was to design and implement bandpass FIR ï¬lters in MATLAB, and to do the decoding automatically. Specifically, we developed a MATLAB program to encode and decode the dual-tone multiple-frequency (DTMF) signals used to dial a telephone. Code is available on GitHub.
Waiting on the report to finish converting at http://www.slideshare.net/codyaray.