Automation record problem

[janika]

Hi
I recently found the automation record feature.
I took a project I was working on and added 3 automation tracks to one of the instruments.
Volume, Frequency and resonance ( the latter two from a plugin Calf Filter LADSPA).

The system allows me to record the automation whilst it is playing and as I expect I can twiddle the (onscreen) control knobs and alter the three parameters.
Everything looks good.
Once I have finished recording I turn off the record mode and play back the track, but what I hear is different to what I had recorded.

In particular I check the filter automation graph. It looks good in that it follows the changes that I was making, however the scaling is wrong. The frequency graph is in a much lower range than I had recorded, and for that reason much of my track is silent.

My system is LMS 1.2.0-rc8 on Ubuntu 18.04.

I'm sure this is a bug.

[janika]

More information.

Just incase I have updated my lmms version from rc8 to the new stable release.
I tried again and I varied the frequency between 197 and 2400.
I checked the recording and the frequency record varies between 10 and 80.

[janika]

And still more info.
I make a track with just one automation - frequency (range of the pot is 10 - 20000) It records the level changes but changes them to be a much lower range. SO is useless to play back.

I delete the automation track and add a different automation track - resonance (range on the pot is 0-32) This records and plays back OK.

It appears that the automation recorder cannot handle the larger range of values 0 - 20000 but is OK with smaller ranges like 0 - 32.

[musikbear]

My system : 1.2.0-rc8 on Ubuntu 18.04.

Dont use any RC LMMS has been off released as 1.2.0
This is the version you need to install: the AppImage on the Linux-tab!
This is however only available as x64
https://lmms.io/download/#linux

Rem. to backup before you reinstall!
Let us know the outcome :)

[janika]

Thanks. As I said in my second post I have already upgraded the version to the latest stable release. Still the same problem.

[janika]

It's actually logging the wrong values while you are recording.
I start with the frequency of the filter set to 2200 on the dial and don't move it any more.
I set the automation track to recording on.
I play the song and then look in the automation window and the value recorded is 63.

[janika]

I can post you the file. I'm not sure if I can attach it here?

[janika]

https://www.dropbox.com/s/rvwab2eqa2x3q ... .mmpz?dl=0

The above project will demonstrate the problem.

[janika]

Still more information on this problem.
Ive written down frequency values as I varied the control pot and I've compared them with what are logged in the automation.

The control pot is logarithmic, but the automation values are perhaps being logged using a linear scale.
Lower values are being attenuated but it is lass obvious with the higher values.


Someone need to look into this as it make recording of some automation impossible.

[Gps]

Maybe this should be reported at discord.