how to vectorize this for loop

tic; [s,fs]=audioread('sample.wav'); fdatool

l=length(s); figure('name','speechsignal');

subplot(3,3,1); plot (s); title('speech signal'); xlabel('samples---->'); ylabel('amplitudes---->');

t=(0:1:l-1)/fs; subplot(3,3,2); plot(t,s); title('Speech signal on time axis'); xlabel('time(s) ---->'); ylabel('Amplitude ---->');

f_d=0.1; f_s=floor(l*f_d); overlap=f_s/2; no_f=floor((l/f_s)*2-1); n=zeros(f_s,no_f); n = s( bsxfun(@plus, (1:f_s).', ((1:no_f)-1)*overlap ) );

 subplot(3,3,3);
plot(n);
title('Framing');
xlabel('frames');
ylabel('amplitude');
time=toc
% %windowing
 w=hamming(f_s);
 for i=1:no_f;
     xw(:,i)=w.*n(:,i);

 end

[Jan]

Please mark your code with the mouse and hit the "{} Code" button. Afterwards your code is readable, which is a great benefit for the readers.

Please post the relevant part of the code only.

Answer 1

[Jan]

I assume you can replace the loop

for i=1:no_f;
   xw(:,i)=w.*n(:,i);
end

by:

xw = w .* n;   % >= R2016b

For older Matlab versions:

xw = bsxfun(@times, w, n);