0 个投票

>> filename=('s2.wav');
>> y=wavread(filename);
>> [y,Fs,nbits]=wavread(filename);
>> save(filename,'-mat');
why save(filename,'-mat'); does not create the *.mat file?

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CS Researcher
CS Researcher 2016-5-4

0 个投票

You should do this:
filename = 's2.wav';
[y, Fs] = audioread(filename);
save('s2.mat','y');

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Nor Ashikin
Nor Ashikin 2016-5-4
thanks for the answer. I managed to save it in the form of mat file. However when Im trying to load the mat file (using this command: load s2.mat;), the mat file does not appear in the workspace. May I know why? I have checked the mat file has data in it.
CS Researcher
CS Researcher 2016-5-4
It works fine on my system. Do you not get the variable y in the workspace after this command? Do you get any errors?
Walter Roberson
Walter Roberson 2016-5-4
mat files do not appear in workspaces. Variables appear in workspaces. But not if you are using a static workspace
Nor Ashikin
Nor Ashikin 2016-5-4
Thanks for your help CS Researcher and Walter Roberson as well. It worked actually. Just my mistake.

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Walter Roberson
Walter Roberson 2016-5-4

0 个投票

save() is not defined to override your choice of file extensions. If a file already has an extension, then save() will use that extension. So what you are doing is overwriting your .wav file with the mat contents.
If you want to change the extension, then use fileparts to extract the file name without the extension; when there is no extension, .mat will be added.
MHN
MHN 2016-5-4

0 个投票

Just use
save 'filename'

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Walter Roberson
Walter Roberson 2016-5-4
That would create 'filename.mat' -- literally "filename", not 's2.mat'

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