Crossfader Curve slider disallows "disabling" crossfading

[mixxxbot]

Reported by: kevinfishburne
Date: 2016-04-29T05:56:07Z
Status: New
Importance: Undecided
Launchpad Issue: lp1576522

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I'd like to disable crossfading functionality completely, which could be implemented by allowing the Crossfader Curver slider when at the far-right position to create a vertical amplitude envelope. Currently at the far-right it's a "nearly" vertical graph, but it causes songs with no initial silence to fade in for a fraction of a second.

Alternatively there could be a checkbox in the Crossfader settings pane which, similar to the "Beat Detection" and "Key Detection" panes explicitly allows enabling/disabling crossfading ("Enable Crossfader").

[mixxxbot]

Commented by: daschuer
Date: 2016-04-29T09:23:48Z

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Why this is an issue for you? The "nearly veritcal" setting is almost a rectangular, and should work for the most common use cases
What is yours?

Please note that "Cutting" in a song will not work anyway, since a gain jump produces a rectangular impulse witch contains a all frequencies (a click sound).
We have tried hard to eliminate those click sounds everywhere in Mixxx by fading all gain changes for the amount of one audio buffer cycle.

[mixxxbot]

Commented by: kevinfishburne
Date: 2016-04-29T10:32:52Z

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If audio files in the Library are edited precisely then crossfading can make them start or end improperly, as it's a countermeasure against fixed, known, or arbitrary song starts and ends. For well-procured libraries there should be an option to forgo crossfading. There have never been any click sounds, though. That sounds like a buffer/latency or client hardware issue.

[mixxxbot]

Commented by: daschuer
Date: 2016-04-29T14:20:39Z

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In the manual case you can just leave the xfader untouched in center. In the auto dj case, set the fade time to zero.

[mixxxbot]

Duplicate of #8899