Custom Attack / Release Shape

[aquataur]

In pursuit of a better understanding of what the compressor models do, I am trying to work my head around the custom attack (resp. release) shapes.

I understand that, for a 45 degree line from left bottom to right top, a linear input yields an identical output. OK. When the shape is changed, the transfer thus becomes non linear.

But what signal is the input and what is the output?
There must be an analog model for that.

I am thinking of a program dependent compressor behavior:

(...) part of the 1176’s punchy sound is due to how it compresses the attack portion of the
transient lighter than the rest of the volume envelope

(source: https://www.arpjournal.com/asarpwp/all- ... roduction/)

Is that what the custom attack shape does?

[Starship Krupa]

If you're delving that deeply into compressors and how they work, look into DDMF Plug-In Doctor.

It analyzes things like compression, EQ curve and harmonic distortion and gives you a graphical view of what the plug-in is actually doing when presented with an audio signal.

It works best for compression and EQ. Using it, I've learned a lot about various compression and EQ plug-ins.

One thing I learned was that MeldaProduction's products are consistently WAY lighter on resource usage than other companies'.

What you can do with it, for instance, is load up your favorite 1176 emulation and see what its curves look like at the various settings.

I've used it to clone compression curves from other plug-ins using MCompressor (which provides an amazingly powerful ability to design your own compression curves).

Of course doing that is never going to be perfect, but if someone wants the best slavish emulations of classic hardware, I think UAD are having a sale right now.

[aquataur]

Greetings man, I know you from 'Yonder

This unit is probably what Melda refer to when they say they have computer analyzed those models.
In so far this work has been done...
They have some of the vintage models in their MTurboCompressor, however I do not see the program dependency reflected in those models. Unless I grossly misunderstand the custom shapes - but I fail to see the timeing part in those curves which would be required for program dependency.

I do not have any of those fancy sound-a-like plugins, neither do I have plans. If you have followed me over at Mixcraft forum you may know that I am a defender of task-oriented compression. Why not use time-proven devices.

So this is rather about understanding...
Thanks for your help.