Why is the following code:
[~,~,~,opts]=wavread('example.wav');
causing apparent readout of all signal data into the memory? (memory is freed immediately upon completion making it hard to spot) This causes 'Out of memory' error when attempting to only read a small 'opts' parameters portion from a large .wav file.
Quote from help: Using the tilde (~) operator, you can change the declaration of a function so that it ignores any one or more entries in the input argument list(…)This can help you to keep your workspace clear of variables you have no use for, and also help you conserve memory.
At the same time wavread('size') does not cause this type of problems.
The only workaround I found to tis problem is: [~,~,~,opts]=wavread('example.wav',0);
Kind regards
Michal
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