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When I run my REW frequency sweeps i get a weird high frequency oscillation for the last fifth or sixth of the sweep. Any thoughts? I am running the latest REW update on an old laptop running Vista, UMIK.
 

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What equipment are you using?
 

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When I run my REW frequency sweeps i get a weird high frequency oscillation for the last fifth or sixth of the sweep. Any thoughts? I am running the latest REW update on an old laptop running Vista, UMIK.
Try changing the Sweeps to 1 this is in the Measurement tab where you Start to measure.
 

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Sorry for the lack of detail...
Using a UMIK, windows Vista, REW latest update.

The sound is both audible and visible on the waterfall.

I only run 1 sweep at a time.
 

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Sonds like a feedback loop. Do you have any other audio devices active on the computer?
 
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