.TH dtmf2num 1 "April 20 2017"
.SH NAME
dtmf2num \- tool for decoding the DTMF and MF tones from PCM wave files
.SH SYNOPSIS
.B dtmf2num
.RI [ options ] " files" ...
.br
.SH DESCRIPTION
This manual page documents briefly the
.B dtmf2num
command.
.PP
\fBdtmf2num\fP supports any type of wave file (frequencies, channels and
8, 16, 24 and 32 bits), automatic optimizations (DC bias adjust and
normalization) and both WAV and raw PCM data.
.PP
The program has been successfully tested with many audio files and
moreover with those highly dirt and damaged, for example recorded
with a microphone in a room or at a very low volumes or with some
noise.
.SH OPTIONS
.TP
.B \-r F C B
Consider the file as raw headerless PCM data, you must specify the
Frequency, Channels and Bits like -r 44100 2 16
.TP
.B \-o
Disable the automatic optimizations: DC bias adjust and normalize.
Use this option only if your file is already clean and normalized
.TP
.B \-w FILE
Debug option for dumping the handled samples from the memory to FILE
.TP
.B \-z P V
Set specific parameters of dsp.c:
    DTMF_OPTIMIZED_VALUE      102.00
    DTMF_THRESHOLD            800000000.00
    DTMF_NORMAL_TWIST         6.30
    DTMF_RELATIVE_PEAK_ROW    6.30
    DTMF_RELATIVE_PEAK_COL    6.30
    BELL_MF_THRESHOLD         800000000.00
    BELL_MF_TWIST             4.00
    BELL_MF_RELATIVE_PEAK     12.60