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DTMF Encoder/Decoder (Generation/Detection)
by Muhammad Azeem Azam
Performs Generations and Detection of signals using different technique
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| dtmf_signal.m |
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% This is a sub file used by dec_filter.m %
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% Program Developer: Mr. Muhammad Azeem Azam %
% Email: azeemmet@yahoo.com %
% Year: 2007-2008 %
% Module: (CT3P30) Engineering Project %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
axes(handles.dtmf) % Select the proper axes
Fs= 8000; % Sets the sampling frequency
N= 1000;
T= 1/Fs; % Sets the sampling interval
t= (0:N-1)*T; % Defines the time signal in seconds
x= (sin(2*pi*flow*t)+ sin(2*pi*fhigh*t)); % Creates a DTMF signal
plot(x); % Plots the signal
grid on; % Turns on the grid |
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