Designed a New Noisegate

glpg80

glpg80

Well-known member
I wanted to design something that could be integrated into amps to remove Johnson noise, flicker noise, black body noise, and general white noise.

It only has one knob. Everything else is automatic and the circuit was designed from scratch.

Here’s the performance built and simulated in LTSpice with a signal as small as 1mV at the input of an amp. The cool thing about this circuit is that it auto detects amplitudes and auto releases super fast - about 50us at 10KHz. You don’t need to set any controls except a simple pot to tune it in for the amp it’s in. Close it up and never touch it again.

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Bash_Man said:
Sounds very interesting. Planning to build a physical gadget ?
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I saw the Revv G8 was $200 and said fuck all that. I can design my own that’s simpler and actually intended to be installed directly in amps. Threw a circuit idea together in one night and it seems to work. Yes I plan to breadboard a test circuit but I need to add some protection circuits as I have to account for people using boost pedals and active pickups.

It would install directly on the input jack inside your amp and be relatively small. At least that’s my intentions.
 
glpg80 said:
I saw the Revv G8 was $200 and said fuck all that. I can design my own that’s simpler and actually intended to be installed directly in amps. Threw a circuit idea together in one night and it seems to work. Yes I plan to breadboard a test circuit but I need to add some protection circuits as I have to account for people using boost pedals and active pickups.

It would install directly on the input jack inside your amp and be relatively small. At least that’s my intentions.
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Is it possible to design it with an Input/output type solution?
 
Bash_Man said:
Is it possible to design it with an Input/output type solution?
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Although I could, it’s not intended to operate in a way that resolves ground loops or hum. It’s designed for background noise in high gain circuits. I actually don’t even know how this would work with other noise sources - you need the additional fidelity from current noise suppressor pedals to get a broader noise solution at the expense of performance.
 
DanTravis62 said:
Holy shit man!

That's amazing
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Thanks dude! I still have some tweaking to do in simulation land only because it will make breadboarding easier. I think as is would be insane sensitive and I want to bring the sensitivity down so the circuit works better.
 
glpg80 said:
Although I could, it’s not intended to operate in a way that resolves ground loops or hum. It’s designed for background noise in high gain circuits. I actually don’t even know how this would work with other noise sources - you need the additional fidelity from current noise suppressor pedals to get a broader noise solution at the expense of performance.
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Sounds good. Would this something be at the input of an amp or can it also be in the effects loop ?

Thanks
 
Bash_Man said:
Sounds good. Would this something be at the input of an amp or can it also be in the effects loop ?

Thanks
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It senses at the input and gates at the phase inverter outputs so it’s even more efficient than current offerings.
 
glpg80 said:
Thanks dude! I still have some tweaking to do in simulation land only because it will make breadboarding easier. I think as is would be insane sensitive and I want to bring the sensitivity down so the circuit works better.
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This will be an insanely nice ease of life feature on your amp
 
I think the placement is perfect as well as application.

If i am understanding correctly, this would be gating in a way that would help a suppressor or gate in the loop. That would take out the hum, or preamp noise, and yours would be adjusted by your playing.

I am really excited to see how this goes. I would solder it to my input if you made a board.
 
DanTravis62 said:
This will be an insanely nice ease of life feature on your amp
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Cool thing is that if you’re running time based effects, I could have it sense on just the effects return so that with or without effects it will always work or even both the input and the effects return. It’s really made to be a set it and forget it kind of thing. I hate how intrusive noise gates are these days or how crap some work.
 
glpg80 said:
Cool thing is that if you’re running time based effects, I could have it sense on just the effects return so that with or without effects it will always work or even both the input and the effects return. It’s really made to be a set it and forget it kind of thing. I hate how intrusive noise gates are these days or how crap some work.
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Absolutely. It's one of those effects that you would have thought designers would put more effort into improving a long time ago
 
DanTravis62 said:
Absolutely. It's one of those effects that you would have thought designers would put more effort into improving a long time ago
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Because it’s not something you can directly copy from the 60’s. Marshall integrated their take on the KK signature model (and the HJS) and look what it did to the pedal community - it blew up from rampant copying and tweaking. Engl has offered it for a while as well. Any respectable company at high gain levels knows it becomes necessary with tubes.

Designing them can be challenging and there’s a few different ways. New fresh designs require actual electrical engineering though. I’ve got simulations going but it will be far from perfect on first try as with all things brand new but I will get it to where I intend.

I hope to offer it as a kit like the metroloops and it will be an option on my modded amps.

And I say to those looking to lift it, good luck. It will be encased in an epoxy mold except for the tuning parts. These have too much of a history of being lifted or designs stolen.
 
glpg80 said:
And I say to those looking to lift it, good luck. It will be encased in an epoxy mold except for the tuning parts. These have too much of a history of being lifted or designs stolen.
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***As Fortin simultaneously googles**
Methylene Chloride :ROFLMAO:

This is an excellent idea, and could revolutionize the amp design industry !!!

GOOD LUCK, AND DON'T FORGET THE LITTLE PEOPLE WHEN MARSHALL OFFERS YOU MILLIONS TO SELL THEM THE DESIGN, EXCLUSIVELY.
(y)(y)(y)
 
Very cool GLPG80! Can't wait to hear a clip of it in action!:2thumbsup:

Put it in a pedal brother and make sure you encase it in welded steel ala Larry so Fortin don't market the ZUUL +++++++ pedal....:yes::LOL:
 
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