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iMac making weirs sounds through speakers


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You guys know more than most general Mac forums, so I thought I might ask about this. My iMac was making a continuous "modulating" high pitched sound. It would even pan from left to right and back. This sound was coming from my speakers. I disconnected my interface, switched inputs and outputs to internal speakers/mic... and it still happened. Did a hardware test and it was clean. Reset SCM and PRAM and now it is gone. I am running Mojave 10.14.4

 

This was really weird. I hope it was just some odd anomaly never to come back and/or software and not hardware related. 10.14.4 has been buggy for me - Ableton and Logic crashing here and there when they never ever did before (well, never Logic, Ableton less so).

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Your signature indicates that you are running an obsolete Logic version. Current one being v.10.4.4...

SMC / PRAM reset does indeed often solve deep software related issues.

Computers are very complex devices, which software components could get messed with after modifying them (i.e. adding/removing drivers, etc). Most of the time, the only possible approach to solve same is empiric. Resetting SMC / PRAM shortcuts that approach.

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