How to perform ook modulation on audio?

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Faheem Ur Rehman
Faheem Ur Rehman 2021-6-11
I have found the code below but i don't know where to change it for audio.
Audio
x = audioRC(audioSrc());
x = x(1:spf,1);
function ookd(g,f)
%For more information, visit: www.matpic.com
%Modulation OOK
% Example:
% ookd([1 1 0 1 0],2)
%Author: Diego Orlando Barragán Guerrero
%diegokillemall@yahoo.com
%Loja (ECUADOR)
%Long Live Heavy-Metal
%See also:
%http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=14328&objectType=FILE
if nargin > 2
error('Too many input arguments');
elseif nargin==1
f=1;
end
if f<1;
error('Frequency must be bigger than 1');
end
t=0:2*pi/99:2*pi;
cp=[];sp=[];
mod=[];mod1=[];bit=[];
for n=1:length(g);
if g(n)==0;
die=zeros(1,100); %Modulante
se=zeros(1,100); %Señal
else g(n)==1;
die=ones(1,100); %Modulante
se=ones(1,100); %Señal
end
c=sin(f*t);
cp=[cp die];
mod=[mod c];
bit=[bit se];
end
ook=cp.*mod;
subplot(2,1,1);plot(bit,'LineWidth',1.5);grid on;
title('Binary Signal');
axis([0 100*length(g) -2.5 2.5]);
subplot(2,1,2);plot(ook,'LineWidth',1.5);grid on;
title('OOK modulation');
axis([0 100*length(g) -2.5 2.5]);

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