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Noise gate in reverse
Hi, I would need a noise gate that works in reverse or that only lets the audio pass below a certain threshold, would anyone have any advice?
Thank you
Comments
Sound like a job for — wait for it…..
DRAMBO! 🤗
When I was on PC, every vanilla noise gate bundled with a DAW had a simple button toggle to invert the behavior.
You could use a regular gate and record the output, then invert the output and add both waveforms together. The inverted and gated waveform should cancel out the parts that are over the threshold.
Clever, but I imagine they want to hear what’s happening in real time for fine tuning the attack and threshold.
You must be in real time and within AUM.
Really interesting, congratulations, I will take it into account for other uses but in this case I need it in real time
FAC Envolver, but it’s probably overkill for your needs.
Exactly.
Lolololol....
For those unfamiliar with the amazing FAC Envolver, it can detect an envelope threshold and fire off a MIDI event like a CC
That mutes the output of an app on the way up and enables it again on the way down.
I used it once to turn the iPad mic audio of sticks on a table top to control a sampler with a snare drum sound and the latency
Was less than a few milli-seconds… like a really cheap “drum trigger” for an e-drum app. Add refined frequency detection and we really have something special…
@FredAntonCorvest
@FredAntonCorvest
@FredAntonCorvest
Then I could use different pitched pots and pans and have an e-drum kit with multiple “FAC Envolver 2” instances in AUM. Nice.
Or… can someone do the pitch detection in Drambo and save Fred the effort? I want the MIDI out and NOT the “resonator”drums that Drambo has on the demo. That’s like Impaktor and it’s OK but an iPad that replaces expensive drum triggers in a <$10 app? Priceless. (Oops… OK . Under $20?)
I'm confused how Envolver helps in this case. I'm assuming the idea is to have a cc output from Envolver's envelope turn down the gain of whatever is playing the sample?
If I understand the need correctly, the idea is to keep the noise floor as-is while reducing the sounds above the noise floor only. Just riding the volume down will also reduce the noise floor proportionally.
You could use envolver and map the output cc so that when the threshold is exceeded the volume is set to 0 and when it drops down, the channel
Is turned back on.
I don't understand. If you turn down the volume it affects the noise that you want to keep as well. All that results in is lowered volume as a whole. I think what is wanted is to keep the noise below the threshold at the same volume while only removing the other sounds above it.
If that is what he means then I don't know of anything that would do what he wants. i interpreted his request as letting low level signals through and blocking signals when above the threshold.
OK, so I think we need clarification @Dino.
Maybe I was just overcomplicating in my understanding. The first is really more like a reverse noise gate, and can easily be obtained using an envelope follower such as FAC Envolver or the one in Drambo to turn down the volume. The second is a very different problem.
I thought he wanted a reverse “gate” function (mute input after threshold event) and not something that filters (i.e. changes volumes).
That’s what I got… but @wim often sees what’s really behind a poorly phrased question that throws me off track.
Maybe he really wants a reverse Brusfri that throws away the signal to capture that sweet noise floor because AI generated
White/pink/Fusia noise is not pure enough. I want artisanal noise, please.
All I'm thinking now is how cool it would be to have something like the more complicated scenario in real life. Continue to enjoy a nice quiet afternoon while all the barking dogs, screaming kids, and ... significant others get nicely filtered out.
You mean an upward compressor? WOOTT! TB Compressor. Etc. etc.
@wim
It's not a matter of noise. My need is this: I am writing a song for flute and live electronics, the sound of the flute will be processed in various ways with reverbs, delays, granulators of various types. I want to activate an effect placed in a bus only above a certain dB threshold and for this reason there is no problem with a normal noise gate, but I would also like a bus with another effect that instead lets the sounds pass with piano and pianissimo dynamics and blocks me those with higher intensity. So nothing more than a noise gate that works in reverse. I hope I was clear. I have Drambo and I already use his noise gate but to program a patch that serves my purpose I don't know where to start.
Correct
Clone your bus:
- Clone A goes to a Gate with a steep slope at your threshold, then invert phase.
- Clone B goes to an Upward Compressor at the same threshold.
Recombine Clone A + Clone B and above the threshold should null while below it will remain (and be boosted).
Sort of a variant of what @michael_m said. I don't know if this would work in practice, but it works in my mental model ... which could be seriously flawed
I also feel like you might be able to do what you want with some smart sidechain ducking.
Probably the best way then is as-mentioned. You need an envelope follower that outputs a CC that you can use to control a volume knob or fader. FAC Envolver is a useful app for this, but if you already have Drambo, there's one in there too. If it isn't clear how to hook things up, I'm sure you'll get plenty of help here.
Sorry for sidetracking the discussion by misunderstanding the requirement.
Complex but brilliant, today I try,
Thank you
We would miss it, in fact thank you for the ideas,
Did anything work? I'm curious what you found.
The simplest way to do what the OP wants is to use Fabfilter Pro-G in the ducking mode. The gate will close whenever the sound level exceeds the threshold set.
It's also super easy to do in Drambo but I'll wait for the answer first
Nice tip.
LOL
Evryone not having drambo is just missing out