Norns: mlr

pinkslater · 2019-02-19T19:34:27.000Z

Hi, new here and experiencing some feedback issues while learning the layout of mlr. I’m able to do a few cuts and splices but the deeper I get into arranging patterns I get a really harsh white noise and feedback. Just running a quiet piano loop from op 1 into mlr. Any ideas as to how to prevent this?

carvingcode · 2019-02-19T20:58:47.754Z

Is this from mlr on norns? I also got very harsh, loud noise the last time I attempted use.

pinkslater · 2019-02-19T21:32:27.816Z

It is from Norns…

Justmat · 2019-02-19T21:47:34.650Z

Do you have the norns reverb turned on? Have you tried it with the reverb off?

pinkslater · 2019-02-19T22:31:21.140Z

Reverb is off. It’s only in clip mode. When I press keys on the top center row the sequence gets really loud and feeds back.

zfigz · 2019-02-19T22:33:35.176Z

are you feeding the norns through a mixer / effects that might be causing the issue?

pinkslater · 2019-02-19T23:42:48.679Z

No effects. Going straight into abelton.

robbbiecloset · 2019-02-19T23:44:41.280Z

Have you tried reseting the audio? I’m not sure that I’ve had these precise symptoms, but if it’s ever misbehaving resetting the audio fixes it for me.

pinkslater · 2019-02-19T23:55:19.745Z

I have. Gonna let it sleep and come back to it.

tehn · 2019-02-20T18:20:06.809Z

can you describe more precisely what’s connected and then the process to replicate the loud noise?

certainly the reverb needs to be off— this is a know CPU overutilization issue that is fixed in the new update).

riggar · 2019-02-21T09:07:12.851Z

Me too - 20 chrs……

pinkslater · 2019-02-22T21:17:23.538Z

I have an OP-1 running a sequence of sampled piano notes into Norns which is running MLR and being controlled by Grid. While running the sequence I’m making cuts on the cuts page and switching back the the first page (playback page). When I make keys presses on the section to the left of tempo control I get a high frequency and or feedback. I’m actually not sure what this particular parameter section is doing or supposed to be doing…( reverse?) but as I said it’s not doing anything except creating this feedback. The same thing happens in the pattern page. I can load clips but once I get to about clip 9 or 10 (far right top row on grids in pattern mode) the same feedback occurs. I’m still getting a feel for the layout of MLR on grids. I’m wondering is it possible I’m playing back on a channel that is also recording when layering clips? Also all internal effects from Norns are disabled and I’m running direct via hi-z input into an Apollo Twin MKII with abelton as DAW.

noiserock · 2019-03-29T08:58:16.647Z

I really need to try this out on my 64 next week.

noiserock · 2019-04-04T08:05:44.278Z

Hm. Getting some weird bugs when I try to run the mlr64.lua. Seems to have something to do with lua itself(or is this because I am running Maiden 0.12 on Norns 1.xx?).

error code:

# script init

### SCRIPT ERROR: init

/home/we/norns/lua/params/option.lua:17: bad argument #1 to 'pairs' (table expected, got nil)

stack traceback:

/home/we/norns/lua/norns.lua:179: in function &lt;/home/we/norns/lua/norns.lua:179&gt;

[C]: in function 'pairs'

/home/we/norns/lua/params/option.lua:17: in function 'params/option.new'

/home/we/norns/lua/paramset.lua:96: in function 'paramset.add_option'

/home/we/dust/scripts/custom64/mlr64.lua:318: in function 'init'

/home/we/norns/lua/script.lua:70: in function 'script.init'

[C]: in function 'xpcall'

/home/we/norns/lua/norns.lua:180: in field 'try'

/home/we/norns/lua/engine.lua:85: in function &lt;/home/we/norns/lua/engine.lua:84&gt;

READING PMAP

zebra · 2019-04-04T08:36:59.607Z

@noiserock

looks to me like the gist is out of date, it’s using an function signature for param:add_option:
[ https://github.com/monome/norns/blame/44ebdb1f036fc8e71c133310107019f64c49bed5/lua/paramset.lua#L58 ]

vs
[ https://github.com/monome/dust/blob/master/scripts/tehn/mlr.lua#L341 ]

(i think this extra “id” vs “name” was added so that “name” can contain spaces, or something)

@pinkslater hard to understand exactly what is the matter but seems likely it’s one of several bugs in the 1.x softcut engine. for example, you could be recording with modulated rate which makes gross noises. this is fixed in 2.0

noiserock · 2019-04-04T13:49:24.109Z

thanks. I got it semi-working with just updating the newest mlr code based on the changes @okyeron made. Still need to fine tune it, as the grid does not draw correctly based on button presses in the cut menu.
But at least it’s some progress

Might also be worth waiting until 2.0 mlr is out and about.

mlr64.lua (20.6 KB)

n-So · 2019-04-05T00:42:03.263Z

any update on potential stereo capabilities? my favorite thing to do with MLR is piano mangling, and summing my L-R mic pair to mono makes things sound not so great.

brndnwilliams · 2019-04-05T03:55:49.869Z

I pray for stereo mlr too

LLK · 2019-04-05T14:13:29.959Z

Such a paradox that an app called mLR doesn’t have stereo!

tehn · 2019-04-05T16:03:53.576Z

good news: softcut now supports stereo.

bad news: i’ve had no time at all to explore this feature.

the 2.0 mlr is ported to softcut so enjoys all of the new quality improvements-- ie non-aliased speed scaling and ability to overdub at all sorts of speeds etc. i’ve increased the track count back to 6 (CPU improvements can handle it). i’ve also added PAN parameters.

there’s more i’d like to do and once things settle down. stereo option, mute groups, etc.

there’s currently a small bug with the playhead grid animation updating slightly off. i’m hoping to look at that prior to 2.0 release today but it may have to wait a minute.