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I try to record a sound but the recorded file is empty...

Hi, I try to record a sound through the mic in, in my computer... but all i get is an empty file! (or better a file of 0 sec...) There must be a little mistake in this VI, but I can't find it, can somebody help me?
The VI is included,
I hope somebody can help

Thanks, Richard
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I don't see anyplace in the program where you are actually saving a file to disk. You have the output of SI Read being filtered and graphed and also back out to the sound card, but that's it. The only Snd Write Wave File function is outside the loop and will only write an existing file to a new location.
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