bitcrusher downsampling knob doesn't do much until the very end of the rotation

[Owen Williams]

The downsampling knob doesn't crush very much (make an audible change) until the very last few degrees of the knob's rotation. Probably it should be logarithmic.

[RJ Skerry-Ryan (rryan)]

+1, log support isn't finished yet

[Owen Williams (ywwg)]

This still doesn't seem like it's working right, can you post a link to the commit that fixed this?

[Daniel Schürmann (daschuer)]

This commit fixes the issue for me.
https://github.com/daschuer/mixxx/commit/573060b807113156d1e8b9106f58b42d4f36a0fb

But maybe it is not enough. The "problem" for the bitcrusher is, that you need good speakers and good ears the notice differences between 16 and 8 bit. 8 bit is now at a quarter instead of half.

[Owen Williams (ywwg)]

Thanks, I'll tweak this (and the other effects) a bit.

[Daniel Schürmann (daschuer)]

Hi Owen,

fixing this or similar bug in other effects. moves towards a "taste" discussion, we should avoid.

Can you outline your idea to fix this?

I am as well not entirely satisfied with the effect, but mainly how the super knob acts on down sampling and the bit depth knob.

IMHO a good strategy to make the single parameter knob almost natural and move the "taste" part to a tweaked or later tweak-able scaled mapping of the super knob.

So a possible solution for this might be:
1. consider if we need a third scaling for knobs in addition to linear and logarithmic (one decade), but keep the value natural range from 1 to 16 in case of bit depth.
2. add a probably non linear scale to the super knob mapping, to produce a nice effect. For this, we need a conclusion how to achieve it.
Any Ideas?

Kind regards,

Daniel

[Owen Williams (ywwg)]

I have no problem inventing magic numbers and tweaking the effect until it sounds good to me -- that's how I've approached most of the features I've written. I usually try things over and over and tweak until it sounds good. I think the best software makes choices for its users when it makes sense to do so. This is one of the benefits of writing one's own software -- sometimes I get to decide that my taste is better :).

At the most basic level, I want to make sure that as much of the range of the knob is useful as possible. If I find that I have to move it really slowly because the change is too coarse, I'm going to tweak it so I can be looser. I don't think I should have to get approval for a perfect mathematical formula to do it. My idea for how to fix this is: I will play with it for a while until it sounds right.

[Owen Williams (ywwg)]

The log change was good. I also tweaked the limits so it doesn't fall off a cliff at the end of the range (it actually went silent before!).

[Daniel Schürmann (daschuer)]

Thank you,
I am working on a tweak-able scale knob, that allows to set the dB range and the neutral position.
I hope we can use it to tweak the effect a bit more.

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/7348