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Gear / Technical Help => Post-Processing, Computer / Streaming / Internet Devices & Related Activity => Topic started by: aaronji on November 13, 2018, 09:30:05 AM

Title: Plug-in/Software to remove ground loop hum?
Post by: aaronji on November 13, 2018, 09:30:05 AM
I recently recorded Blackberry Smoke in Amsterdam.  The recording turned out quite well, but there is a ground loop hum audible during some of the quieter parts of the second half of the show.  I was wondering if anybody could recommend a plug-in that would help reduce this?  I am using Audition 3, which is pretty long in the tooth, so I would also be amenable to a whole new software package, if needed.  I would prefer not to spend a ton of money, but it doesn't have to be free either.

Thanks for any recommendations!
Title: Re: Plug-in/Software to remove ground loop hum?
Post by: if_then_else on November 13, 2018, 10:20:03 AM
Izotope RX or Acon Acoustica?
Title: Re: Plug-in/Software to remove ground loop hum?
Post by: noahbickart on November 13, 2018, 08:21:22 PM
just use any eq with very narrow and deep cuts at 50hz or 60hz as appropriate (along with any relevant harmonics).

Some eq's even have a preset for it, like the new toneboosters v4
Title: Re: Plug-in/Software to remove ground loop hum?
Post by: aaronji on November 14, 2018, 10:57:49 AM
Quote from: if_then_else on November 13, 2018, 10:20:03 AM
Izotope RX or Acon Acoustica?

iZotope was already on the list, of course, but I had never heard of Acoustica before!  It looks like a pretty nice package; I may spring for it.  Thanks for the recommendation.

Quote from: noahbickart on November 13, 2018, 08:21:22 PM
just use any eq with very narrow and deep cuts at 50hz or 60hz as appropriate (along with any relevant harmonics).

Some eq's even have a preset for it, like the new toneboosters v4

I already tried to EQ it at 50 Hz (in Europe) with the harmonics, but it didn't work very well for me in my decade (plus) old Audition 3.0.  I also tried a de-noise effect.  That's actually what got me started down this path.  It would be nice to have this as a preset and I figure a lot of other things have also improved.  I will look into toneboosters.     

[Edit to add:]  I assume the screenshot is from toneboosters?
Title: Re: Plug-in/Software to remove ground loop hum?
Post by: if_then_else on November 14, 2018, 12:34:11 PM
Quote from: aaronji on November 14, 2018, 10:57:49 AM
Quote from: if_then_else on November 13, 2018, 10:20:03 AM
Izotope RX or Acon Acoustica?

iZotope was already on the list, of course, but I had never heard of Acoustica before!  It looks like a pretty nice package; I may spring for it.  Thanks for the recommendation.

Acon are actually well regarded for their VST plugins. If memory serves, their "Restoration Suite" (VST plugins without the DAW / spectral editor) is also available separately.

I use Izotope RX6. If you're able to upload just one track which suffers from the ground hum problem I could give it a try to see what you could expect from RX in the best case.
Title: Re: Plug-in/Software to remove ground loop hum?
Post by: noahbickart on November 14, 2018, 12:57:00 PM
Quote from: aaronji on November 14, 2018, 10:57:49 AMI assume the screenshot is from toneboosters?

Yes, I just bought the new v4.
Title: Re: Plug-in/Software to remove ground loop hum?
Post by: aaronji on November 17, 2018, 06:15:38 PM
^ Thanks for the tip! I downloaded the toneboosters EQ v4 yesterday. Inexpensive, easy to figure out, and lightyears better than the EQs in Audition 3!

I also spent some time checking out Acoustica 7.1. It seems to correspond really well with my needs and the full-featured premium version is reasonably priced. Of note, I spoke with their customer service about a couple of questions and they were responsive and friendly. Specifically, I have a Windows desktop and a Mac laptop; they said I can purchase one license and install the software on both systems. In my experience, that's pretty rare...