Envelope follower / ducker

Using Nyquist scripts in Audacity.
Post and download new plug-ins.

If you require help using Audacity, please post on the forum board relevant to your operating system:
Windows
Mac OS X
GNU/Linux and Unix-like

Envelope follower / ducker

Permanent link to this post Posted by steve » Tue Oct 24, 2017 6:00 pm

Following on from this topic https://forum.audacityteam.org/viewtopi ... 39#p326639 a question was asked about creating an effect that does the opposite of an envelope follower.

Here's the plug-in, which I have named "Dynamic Mirror" (it is used to mirror the dynamic of one track onto another track.
As yet there is no documentation, but from looking at Trebor's animation in the other post, I think it should be fairly easy to work out what it does and how to use it. If anyone would like to have a go at writing some documentation for this effect, that would be very welcome. Such documentation can be posted as a reply, and would ideally follow the general format used for plug-ins on this wiki page: http://wiki.audacityteam.org/wiki/Nyqui ... t_Plug-ins

Original version (obsolete):
dynamic-mirror.ny
(2.8 KiB) Downloaded 12 times

Click Here to Download the Latest Version
steve
Site Admin
 
Posts: 45340
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: Envelope follower / ducker

Permanent link to this post Posted by Trebor » Tue Oct 24, 2017 8:10 pm

Thanks Steve.
In ducking-mode that's a lot easier to use than AutoDuck, IMO ...

dynamic-mirror demo (ducking).gif
dynamic-mirror demo (ducking).gif (40.7 KiB) Viewed 351 times
Trebor
 
Posts: 4020
Joined: Sat Dec 27, 2008 5:22 pm
Operating System: Windows Vista

Re: Envelope follower / ducker

Permanent link to this post Posted by steve » Tue Oct 24, 2017 9:07 pm

Glad you like it.
Feel free to write some documentation if you have time ;)
Do the "range" controls make sense?
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
steve
Site Admin
 
Posts: 45340
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: Envelope follower / ducker

Permanent link to this post Posted by Trebor » Tue Oct 24, 2017 9:59 pm

steve wrote:Do the "range" controls make sense?

If I imagine the sliders running vertically : rotated anticlockwise by 90 degrees ...

dynamic-mirror demo (following)_.gif
The lower track being reshaped is white-noise of constant volume
dynamic-mirror demo (following)_.gif (74.34 KiB) Viewed 347 times
Trebor
 
Posts: 4020
Joined: Sat Dec 27, 2008 5:22 pm
Operating System: Windows Vista

Re: Envelope follower / ducker

Permanent link to this post Posted by steve » Tue Oct 24, 2017 10:37 pm

Trebor wrote:If I imagine the sliders running vertically : rotated anticlockwise by 90 degrees ...

It's a shame that we don't yet have vertical sliders for Nyquist plug-ins. They would be very appropriate here.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
steve
Site Admin
 
Posts: 45340
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: Envelope follower / ducker

Permanent link to this post Posted by Trebor » Tue Oct 24, 2017 11:42 pm

If applied to a duplicate of the control track, dynamic-mirror can be used to compress & expand the dynamic range ...

dynamic-mirror used to compress & expand.gif
Click on this animation to see it in its entirety
dynamic-mirror used to compress & expand.gif (240.67 KiB) Viewed 344 times

It's the Swiss-army-knife of plugins : follower, ducker, compressor & expander.
Trebor
 
Posts: 4020
Joined: Sat Dec 27, 2008 5:22 pm
Operating System: Windows Vista

Re: Envelope follower / ducker

Permanent link to this post Posted by steve » Wed Oct 25, 2017 1:12 am

Interesting - gives me an idea for a new feature.
Currently, if only one track is selected, it throws an error. Rather than that, perhaps a more useful behaviour would be for it to apply the selected track's envelope to itself.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
steve
Site Admin
 
Posts: 45340
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: Envelope follower / ducker

Permanent link to this post Posted by Trebor » Wed Oct 25, 2017 4:20 am

Add de-essing to the repertoire ...

de-essing with dynamic-mirror.gif
Click on this animation to see it in its entirety
de-essing with dynamic-mirror.gif (1.02 MiB) Viewed 337 times

The excessively sibilant frequencies, (6.5kHz -12kHz in this case), are used to duck.
Trebor
 
Posts: 4020
Joined: Sat Dec 27, 2008 5:22 pm
Operating System: Windows Vista

Re: Envelope follower / ducker

Permanent link to this post Posted by steve » Wed Oct 25, 2017 12:12 pm

Updated plug-in.

In this version, if only one track is selected, the plug-in follows the amplitude of the selected track, and then applies that envelope to the same track.
If multiple tracks are selected, the plug-in follows the amplitude of the selected track, and then applies that envelope to all other selected tracks (but not the first track).

dynamic-mirror.ny
(2.82 KiB) Downloaded 20 times
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
steve
Site Admin
 
Posts: 45340
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: Envelope follower / ducker

Permanent link to this post Posted by Trebor » Thu Oct 26, 2017 12:42 am

steve wrote:In this version, if only one track is selected, the plug-in follows the amplitude of the selected track, and then applies that envelope to the same track

NB: If repeat effect, ("Ctrl"+"R"), is used to repeatedly apply version-2 of dynamic-mirror to one track only, the effect being applied will be different with each repetition, because the control-track is changing, (not necessarily a bad thing, but perhaps counter-intuitive).

If there is a control track and a duplicate track, and dynamic-mirror applied repeatedly, the effect will be exactly the same every time. Plus, with the original track present, there is the opportunity to mix to dilute the effect on the processed track.
Trebor
 
Posts: 4020
Joined: Sat Dec 27, 2008 5:22 pm
Operating System: Windows Vista

Next

Return to Nyquist



Who is online

Users browsing this forum: No registered users and 2 guests