SynthMakerGaryG ·
can anyone give me a pointer or two towards building a noise gate module?
nothing fancy just a basic block diagram of what i should be aiming for (my efforts sadly sucked)
cheers, .g
noise gate?
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skOre ·
working on an example.
stefan ·
FYI: most of the stuff needed can be found inside the compressor module!
edit: Uhm, I think it even can function as a noise gate. Expand Downwards, Ratio = 100%. I could be wrong though 🙂
skOre ·
http://www.skore.de/synthmaker/examples/NoiseGate.osm
give this one a try and tell me if it works 😉
GaryG ·
look forward to it skOre.
thanks stefan, I did hack the compressor about a bit but got something tragically wrong (works great as a killswitch... 😉)
I'll try the settings you suggest.
cheers, .g
aetmos ·
stefan wrote: edit: Uhm, I think it even can function as a noise gate. Expand Downwards, Ratio = 100%. I could be wrong though 🙂
No, you're correct. It works nicely.
platinumears ·
Strictly speaking, downwards expansion is not the same as a gate: expansion will proportionally increase the gain reduction as the signal drops further below the threshold, while a gate applies a fixed static gain change as soon as the level drops below the threshold.
Expanders are sometimes used instead of gates however, as they be gentler on some sources.
stefan ·
platinumears wrote: Strictly speaking, downwards expansion is not the same as a gate: expansion will proportionally increase the gain reduction as the signal drops further below the threshold, while a gate applies a fixed static gain change as soon as the level drops below the threshold.
Expanders are sometimes used instead of gates however, as they be gentler on some sources.
Entirely correct. Maybe the toolbox would benefit from a pure gate module?
platinumears ·
Go for it! 😀
A fully featured gate is more complex than it seems at first however.. the better ones offer "hold" times as well as attack and release, and optional "hysteresis", ie: the threshold is set slightly differently for rising signals and falling signals to prevent rapid opening and closing of the gate during the decay part of a sound.
Then of course there are side-chain filters (not that that should be a problem) and an adjustable gain reduction amount: often it is better to apply only 20dB of gain reduction when the gate is closed, as recovering from that will likely be less audible than from -90dB, or minus infinity.
.. and a plug-in gate should really have a look-ahead option IMO.. you up for it Stefan? 😉
stefan ·
platinumears wrote: Go for it! 😀
A fully featured gate is more complex than it seems at first however.. the better ones offer "hold" times as well as attack and release, and optional "hysteresis", ie: the threshold is set slightly differently for rising signals and falling signals to prevent rapid opening and closing of the gate during the decay part of a sound.
Then of course there are side-chain filters (not that that should be a problem) and an adjustable gain reduction amount: often it is better to apply only 20dB of gain reduction when the gate is closed, as recovering from that will likely be less audible than from -90dB, or minus infinity.
.. and a plug-in gate should really have a look-ahead option IMO.. you up for it Stefan? 😉
I WILL be. I think the compressor is very close to finished feature-wise, so I will soon need a new project anyway 🙂 (edit: oh, right, there was Nildon as well.... We'll see what I'll pick up first. A good gate sounds like fun!) The hold time basically sets the minimum time the gate will be closed, right? Hysteresis is kindof an must imho, otherwise really fast gating would suffer a lot. Imho.... 🙂
platinumears ·
The hold time is a minimum time the gate will stay open. Think gated reverbs.. 😉
stefan ·
platinumears wrote: The hold time is a minimum time the gate will stay open. Think gated reverbs.. 😉
Ah. Heh. Good that we cleared that out 🙂
platinumears ·
Actually, thinking about it I believe it would be more accurate to describe the hold time as a delay between the signal dropping below the threshold and the gate beginning to close.
Its a subtle difference, but probably quite important!
stefan ·
platinumears wrote: Actually, thinking about it I believe it would be more accurate to describe the hold time as a delay between the signal dropping below the threshold and the gate beginning to close.
Its a subtle difference, but probably quite important!
Ah, basically a non-fading part of the attack state then. Shouldn't be a problem.
cbit ·
sounds very useful: any progress with this?
stefan ·
Not from me, I've been busy with work, Anna the synth and fiddling with Joomla lately.
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