DTMF Tones in WAV Files

A C++ parser for WAV files to analyze the content using the Fast Fourier Transform across millisecond slices to identify DTMF frequencies and decode the corresponding DTMF keypad numbers.

worldby.com 2001 – 2009

Marikina CGI entered into a long-term collaboration with worldby.com, including four years consulting on-site at the company headquarters in Italy, and a further four years based in Philippines.