MATLAB: Stuck with DTMF code

dtmf

I want to write a DTMF function which takes 5 inputs and give sound for it with gap of 1 seconds. I know how to concatinetane at the end and other stuff but i am stuck how to take data from fucntion input and tell it to assign a desired frequency. Plz Help me
    function dtmf=dtmfdial([a b c d e],fs);
  %This function produces DTMF Tone  corresponding to given 
  %key number
  %abcdefg=input key numbers
  %fs= The sampling frequency
  fs=8000
  lfg = [697 770 852 941]; % Low frequency group
  hfg = [1209 1336 1477];  % High frequency group
  f  = [];
  for c=1:4,
      for r=1:3,
          f = [ f [lfg(c);hfg(r)] ];
      end
  end
  table=f';
  dur=.5;
  tt=0:(1/fs):dur;
  %******************************************************************

  %%Here i want to tell MAtlab that if key number 1 is pressed then the 
  %frequencies will be table (1,1) and table (1,2)  and so on
  % how to tell matlab about this
  %******************************************************************
  tone1=sin(2*pi*table(1,1)*tt);  
  tone2=sin(2*pi*table(1,2)*tt);
  tone_a=tone1+tone2
sil_dur=1;
sil_freq=0;
sil_tt=0:(1/fs):dur;
sil_tone=sin(2*pi*sil_freq*sil_tt)
tone1=sin(2*pi*table(3,1)*tt);  
tone2=sin(2*pi*table(3,2)*tt);
tone_b=tone1+tone2
soundsc(tone_a,fs);
soundsc(sil_tone,fs);
soundsc(tone_b,fs);

Best Answer

You can pass in an array like
    function dtmfdial(x,fs)
and then inside your function, use a for loop to work on each key pressed. e.g.,
    for m = 1:length(x)
        key_pressed = x(m);
        % continue to whatever you need to do
    end
HTH
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