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A little audio mystery for the PC specialists...

For anything relating to music-making on Windows computers, with lots of FAQs. Moderated by Martin Walker.

Re: A little audio mystery for the PC specialists...

Postby Mike Senior » Fri Jul 05, 2019 5:41 pm

Well, I think I've eliminated all the fans (four of them in the case) but the PSU's. A bit tricky to access that one, but I'll see what I can do. As for something being caught in the blades, I reckon that' unlikely, because it's been happening for months, and it always happens in roughly the same way as that audio file.
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Re: A little audio mystery for the PC specialists...

Postby Agharta » Fri Jul 05, 2019 6:38 pm

A dodgy case fan is very rarely going to crash your PC so if the two things are related then that was always an unlikely culprit so that leaves the CPU, PSU and possibly a GPU.
If you have a dGPU and it has a fan you can usually monitor that either with the software I linked to earlier or using the AMD/Nvidia software.
Often you can disconnect the GPU fan with no ill effect if you aren't using it for more than basic 2D work.
Although some DAWs/VSTs are using the GPU in more intensive ways these day for the GUI.

As soon as you hear the noise I’d look at these other fan speeds to see if they are fluctuating. Set the monitoring software you are using to update as quickly as possible. Speedfan can also monitor some GPU fans and will also graph speeds I think! So just keep it running and it will show you any unusual spikes.
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Re: A little audio mystery for the PC specialists...

Postby cyrano.mac » Sun Jul 07, 2019 11:07 pm

Agharta wrote:The sound you recorded also has a hint of coil whine in it.

And that points to an aging PSU that could fail any minute and take some other hardware with it...
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Re: A little audio mystery for the PC specialists...

Postby Mike Senior » Wed Jul 10, 2019 10:31 pm

cyrano.mac wrote:And that points to an aging PSU that could fail any minute and take some other hardware with it...

Well, it appears that your instincts appear to be correct -- just swapped out the PSU today and haven't heard anything from our friendly chipmunk. :)

Ahhh... silence is golden... :angel:

Thanks again everyone for the advice!

Mike S.
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Re: A little audio mystery for the PC specialists...

Postby Eddy Deegan » Thu Jul 11, 2019 1:02 am

Mike Senior wrote:
cyrano.mac wrote:And that points to an aging PSU that could fail any minute and take some other hardware with it...

Well, it appears that your instincts appear to be correct -- just swapped out the PSU today and haven't heard anything from our friendly chipmunk. :)

Sounds like a result! I'm glad to hear the problem seems finally sorted :thumbup:
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Re: A little audio mystery for the PC specialists...

Postby Martin Walker » Thu Jul 11, 2019 7:55 pm

...and what a fascinating journey it has been for us all! ;)

Bye bye chipmunk.


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Re: A little audio mystery for the PC specialists...

Postby Mike Senior » Thu Jul 11, 2019 10:47 pm

Martin Walker wrote:Bye bye chipmunk.

He lives on in my heart...

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Re: A little audio mystery for the PC specialists...

Postby Hugh Robjohns » Fri Jul 12, 2019 9:29 am

:clap: :D
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Re: A little audio mystery for the PC specialists...

Postby cyrano.mac » Sun Jul 14, 2019 12:51 am

Mike Senior wrote:
cyrano.mac wrote:And that points to an aging PSU that could fail any minute and take some other hardware with it...

Well, it appears that your instincts appear to be correct -- just swapped out the PSU today and haven't heard anything from our friendly chipmunk. :)

Ahhh... silence is golden... :angel:

Thanks again everyone for the advice!

Mike S.

You'd be amazed how many people's computer audio problems originate in old, underpowered or sloppy PSU's...

Sometimes the ground connection is so sloppy the thing has to produce hum. Tightening the screws can sometimes fix it, but some PC PSU's just need to be replaced. It's one thing Apple seems to understand.
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Re: A little audio mystery for the PC specialists...

Postby Eddy Deegan » Sun Jul 14, 2019 1:11 am

Nice one Cyrano. I think you nailed it :thumbup:
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