The following schema describes how to use the audiopreproc module to identify DTMF dial tones.
[DtmfAudioNet] 0 = a ← wav(MONO, input) 1 = d ← audiopreproc(T,a) 2 = output ← wout (_, w:d)
0
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The wav module processes the mono audio. |
1
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The audiopreproc module in DTMF identification mode (T) processes the audio (a). |
2
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The wout module writes the DTMF label information (d) to the output file. |
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