octave

I am developing a speech recognition system from scratch using Octave. I am trying to detect phonemes by detecting differences in frequency. Currently I have read in a wav file, organized the values into blocks and applied fft to the overall data. After, I plot the new data with plot(abs(real(fft(q)))) which creates this graph: How could I get the frequency values (the peaks of the graph)? If you don't have access to findpeaks , the basic premise behind how it works is that for each point in your signal, it searches a three element window that is centred at this point and checks to see whether

Is there a way to extend a vector by making it repeat itself? >v = [1 2]; >v10 = v x 5; %x represents some function. Something like "1 2" x 5 in perl Then v10 would be: >v10 1 2 1 2 1 2 1 2 1 2 This should work for the general case, not just for [1 2] Andrew Shepherd The function you're looking for is repmat() . v10 = repmat(v, 1, 5) Obviously repmat is the way to go if you know in which direction you want to expand the vector. However, if you want a general solution that always repeats the vector in the longest direction, this combination of repmat and indexing should do the trick: v10=v

A question that pops up quite frequently in different shapes and sizes is: Why do I get the following error message: "Undefined function 'function_name' for input arguments of type 'double'." This post attempts to address all the different scenarios where this error message can occur, and propose solutions for how it can be resolved. If you stumble upon this error message and don't know what it means. Take comfort in this: 90% of us have googled the same phrase. "Undefined function 'int' for input arguments of type 'double'." The error message is pretty self-explanatory, but may still cause