Help with creating a function
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Hi, I am new to Matlab and I am trying to create a function that takes a selected audio signal and segments it into different sections, labelling each section with a variable. I have started to create this function below but when I use it the variables don't appear in the workspace. Have I missed something in the function?
function [a1,a2,a3,a4,a5,a6,a7,a8,a9] = segment(FILE)
x = wavread(FILE);
a1 = x(1:20000);
a2 = x(20000:40000);
a3 = x(40000:60000);
a4 = x(60000:80000);
a5 = x(80000:100000);
a6 = x(100000:120000);
a7 = x(120000:140000);
a8 = x(140000:160000);
a9 = x(16000:180000);
end
13 Comments
dpb
on 23 Jun 2013
Edited: dpb
on 23 Jun 2013
I suggest reading up in the 'Getting Started' section and then the full documentation on functions to get a better overall handle on the syntax and calling conventions. Also, go to the section on Data Structures and read up on cell arrays and the section on how to address them.
As for passing anything to another function, you just include it in the argument list at the right location as expected by the called function (assuming order association rather than named arguments vis a vis oop methods). You do not include the braces or parens in the function definition.
As for passing the results of a function, sure if it is the type and size that the function is expecting. Note, however, that there's no way to assign multiple outputs from the called function in this context so the returned value "seen" by the called function will be that of the first returned variable only of the function if more than one are possible.
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