Feature Request - Frequency-selective crossfading

[jus]

While song A has a nice vocal you may want to mix it together with those wobbling bassline from song B.
Sure you can use the frequency kill buttons but thats not a smooth transition.

A frequency-selective crossfader is like the regular crossfader but makes smooth transitions in a specific band ( High,Mid,Low) between two track possible.

[Daniel Schürmann (daschuer)]

Since we have a dedicated filter knob now, we may connect the crossfader to this.

[Don Dennis (metastableb)]

Hello, Id like try and implement this feature . Can you guys give me a hint to where I should be looking at ? Thanks :)

[Daniel Schürmann (daschuer)]

Some Ideas:

For me the four x-fader layout, shown in Jus's layout is a bit overdone or hard to use.
Lets step back and look at the use-cases.
We want to control a transition between two tracks, in a fancy way other than just cross fade.

We have already a bunch of controls to do it:
* [Master] crossfader
* [ChannelN] volume
* [ChannelN] pregain
* [EqualizerRack1_[ChannelN]_Effect1] ...
* [QuickEffectRack1_[ChannelN]] ...
* [EffectRack1_EffectUnit1],group_[BusLeft] ...

Most of them will put a significant load to the CPU when used. Introducing a new effect chain at the x-fader seams not that purposeful.

We need more a intelligent meta control, that can be connected to the controls above, to achieve the desired transition.

Instead of introduce a set of new controls, we should reuse the Effect System:
[QuickEffectRack1_[Master]]

The fist and default effect effect should be controlling the [Master] crossfader
with [QuickEffectRack1_[Master]] ,super1

Later we will add:
transition = 1 -> use Quick effect
transition = 2 -> user defined

User defined, could be an XML or a js. file, that controls the connection and the ratio of the transition_fader to any other CO in Mixxx.

This is a big project, that should be divided in small packages.
A good start might be to just to add the "transition_crossfader" effect.

Any comments, ideas?

[Daniel Schürmann (daschuer)]

Related Bug #1384873

[Be (be.ing)]

This could already be done with controller mappings, but this feature would be particularly useful for keyboard & mouse setups.

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/5240