Hum Canceling gizmo

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Hum Canceling gizmo

Postby pbassplayer » Sun Oct 18, 2015 5:01 pm

Has anyone ever used one of these devices on a bass w/ a single coil p/u (tele bass + misc reissues like the sting bass or the squire 50 p/basses) to eliminate the hum ?
seems like a good idea,sort of like a ground lift item.i see them advertised in in recording magazines http://avensonaudio.com/isodi/
Last edited by pbassplayer on Sat Oct 24, 2015 9:35 pm, edited 1 time in total.
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Re: Hum Canceling gizmo

Postby Mr. Mom » Mon Oct 19, 2015 9:26 am

I'd like to know about this, too. Is it a "ground lift" thingy or a wicked narrow/deep 60 hz cut?
I don't know and I don't care,
'Cause I don't wear Tonto's underwear.
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Re: Hum Canceling gizmo

Postby Rhian Batson » Mon Oct 19, 2015 1:03 pm

Hmm. It looks like folks are using a programmed ATMega32 micro controller to sense and output an out of phase signal to cancel the 60hz hum in a guitar with up to a -15db result. I found this beginner video on the uses of a micro controller but it sounds like these guys are using an AVR platform to program the MC to cancel 60hz using a programming language like C++. I bet somebody's gotta be building these and selling them and they're 5v so a 9v battery should work.

https://youtu.be/JMMamSVy1Zs

https://youtu.be/iTTZUpzAjKc

I found this neat instructable on how to make a 9v to 5v converter.

http://www.instructables.com/id/portable-9V-to-5V-battery/

It just hit me that you could make this fit in a guitar cavity but you could just as easily I think make it into a little stomp box as well with 1/4" in and out plugs as the MC has analog to digital and back converters built in. With that solution, you could add a 9v power adapter instead of relying on a battery and have it live inconspicuously on your pedal board. That and I just noticed that Mr.Mom is a BAD ASS SLUT.

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Re: Hum Canceling gizmo

Postby pbassplayer » Fri Oct 23, 2015 4:42 pm

this is the item i mentioned

http://avensonaudio.com/isodi/
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Location: syracuse ny

Re: Hum Canceling gizmo

Postby Rhian Batson » Fri Oct 23, 2015 5:49 pm

Cool! I want to see the insides of it.
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Re: Hum Canceling gizmo

Postby pbassplayer » Sat Oct 24, 2015 9:36 pm

it's pricey $160
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Location: syracuse ny

Re: Hum Canceling gizmo

Postby pbassplayer » Sun Oct 25, 2015 5:48 am

rolls and ebtech make inexpensive hum eliminators......anyone try one ?
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Location: syracuse ny


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