DTMF2NUM is a tool for decoding DTMF and MF tones
from PCM wave files. It supports any type of wave
file, automatic optimizations (DC bias adjust and
normalization), and both WAV and raw PCM data. The
program has been successfully tested with many
audio files, including ones that are highly dirty
and damaged (for example, recorded with a
microphone in a room or at very low volumes or
with some noise).
