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Author Topic: Sound card noise tip  (Read 389 times)
K5TED
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Posts: 103




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« on: November 23, 2017, 12:28:33 PM »

I generally have been using the onboard sound system on my shack PC for headphones. There has always been a bit of digital noise creeping in when using a "headset' style with boom mic. Sometimes it can be eliminated by tweaking the playback and recording levels.

Yesterday, I tried something I had been thinking about but hadn't taken the time to try. A simple Ground Loop or Ground Hum eliminator cleaned the buzzing and high frequency background static away completely.

These are generally available on Amazon or eBay for under $10. I used the 'Scosch' brand, about $8, on the PC headphone output. Worked like a charm, and frequency response is about the same as direct, with a little less bass boom.
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VA3VF
Member

Posts: 944




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« Reply #1 on: November 23, 2017, 04:17:09 PM »

I generally have been using the onboard sound system on my shack PC for headphones. There has always been a bit of digital noise creeping in when using a "headset' style with boom mic. Sometimes it can be eliminated by tweaking the playback and recording levels.

Yesterday, I tried something I had been thinking about but hadn't taken the time to try. A simple Ground Loop or Ground Hum eliminator cleaned the buzzing and high frequency background static away completely.

These are generally available on Amazon or eBay for under $10. I used the 'Scosch' brand, about $8, on the PC headphone output. Worked like a charm, and frequency response is about the same as direct, with a little less bass boom.

Yes, it does work. I use this one:

https://www.ebay.ca/itm/Car-Noise-Filter-3-5mm-Auido-Stereo-Headphone-Mini-Jack-Ground-Loop-Isolator-New/253147032940?hash=item3af0bd2d6c:g:e5QAAOSwuYVWnHwM
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