dtmfRcvPulse(dtmfPulse)

Converts a DTMF signal pulse into the corresponding character

Function only- no corresponding object

Syntax

dtmfRcvPulse(dtmfPulse): dtmfPulse: waveform - any DTMF-coded signal pulse; return: char - character that corresponds to the given pulse.

Usage

This function takes a general two-tone DTMF pulse with or without noise and other signals and derives a best estimate of the intended encoded character.

Location

menu: no menu pick - to access use the Function and Object browser

library: sigLib

Example

Notes

This function implements a DTMF receiver using a tuned narrow-band receiver and as such is highly noise tolerant. This function is used within the more general dtmfReceiver but may also be used as-is if you have a single DTMF pulse.

Reference

DTMF is a very simple standard consisting of two audio frequencies and developed to enable simple data signaling over telephone lines.

Dependencies

Supported On

VEE 7.0+, all platforms