Question

For my project I need to generate a sine wave using matlab which has 100 000 samples and the frequency changes randomly after every 10 000 samples. The sampling rate and the frequencies can be as per convenience. Is there any function in matlab to generate this?

Answer 1

OK another example: to generate 5 randon frequencies 🙂

%range of possibles frequencies
FrequenciesRandon = [200:1:500];

%number of randon frequencies ??
nf = 5;

EndSignal=[];

for j = 1 : nf
    t  = [ 0 : 1 : 10000];           % Time Samples
    f=randsample(FrequenciesRandon,1); % get the randon frequencie
    Fs = 44100;                     % Sampling Frequency
    data = sin(2*pi*f/Fs*t)';        % Generate Sine Wave
    EndSignal= [data;EndSignal];    
end

wavplay(EndSignal,Fs)