#15

Does this look correct? I get a loud buzz when its turned to 1 in the param menu. Would it be better to just turn the volume of the voices down?

Summary 
 function both_enables(x)
  softcut.enable(1,x)
  softcut.enable(2,x)
end

params:add{type = "number", id = "both_enables", name = "enables",
  min=0, max=1, default = 1,
  action = function(x) both_enables(x) end}
#16

well, did you do anything else to set the parameters of those voices, as in the halfsecond lib/example? is this on top of halfsecond?

use enable flag if you want to completely stop/start processing per voice (consume no CPU when off). the param mapping looks plausibly correct, but it is probably not something you want to modulate (hard clicks will occur.)

1 Like
#17

@rdfm you’ll need to set a bunch of default param values. just enabling it will mean it’s in a somewhat unknown state.

1 Like
#18

i’m not sure when this thread was created, stuff merged &c, but i’m seeing a lot of recent reactions to older posts. so, wanted to point out that all my statements before march 2019 refer to a completely different and more limited version of softcut than the current one. specific references to implementation details no longer apply.

see here for current lua syntax to control softcut parameters
[ https://github.com/monome/norns/wiki/syntax-2.0 ]

these map pretty directly to OSC commands understood by the crone audio process:
[ https://github.com/monome/norns/blob/dev/crone/osc-methods.txt ]

4 Likes
#19

Say I wanted to add ‘halfsecond’ or something similar to a script, but didn’t want it to immediately start up, but wanted to be able to selectively turn it on/off.

How would I go about this?

2 Likes
#21

softcut is a lot of fun! excited for some docs on the parameters, but just changing values and commenting things in and out is a little treasure hunt. here is a super minimal multi-tap ping-pong delay based on halfsecond.

brass synth pulse from a repeating ableton clip running into norns

-- multitap delay using softcut

function init_sc()
	audio.level_cut(1.5)
	audio.level_adc_cut(1)
	audio.level_ext_cut(0)

  for i=1,3 do
    softcut.level(i, 1.0)
    softcut.play(i, 1)
  	softcut.rate(i, 1)
  	softcut.position(i, 1 + (.2 * i))
  	softcut.pan(i, -.5 + (.5 * i))
  	softcut.enable(i, 1)
  end
end

function init()
  init_sc()
end

EDIT: just wanted to say this relied on some setup code that half-second had which I didn’t realize I needed. Resetting audio will make this script not work. I’m working on a more sophisticated multi-tap thing right now…will share when that’s finished.

7 Likes
Cranes
#22

finding some trouble with softcut.buffer_clear() being effective on 190303 – the command doesn’t seem to work as expected (an immediate clear of all buffers). if anyone is able to confirm operator error or otherwise, please lmk!

#23

oh, thank you for reminding me. i think i saw similar behavior last week and forgot to report it. i’ll test again.

3 Likes
#24

@tehn , @dan_derks
yes sorry, looks like arguments to the various clear commands got scrambled. sorry. easy fix

meantime, clear_region looks correct - see if it works for you

pushed softcut-buffer-fixes branch with quick fix for clear command.
will add buffer/write commands while i’m in here (i completely forgot about these), then PR
currently giving a more thorough once-over to the various load commands as well

3 Likes
#25

softcut.buffer_clear_region worked(!, thank you!) but in case it helps, softcut.buffer_clear_region_channel doesn’t seem to have any effect, though it’s accepted as OK

2 Likes
#26

PR with fixes to those issues

also added commands to save softcut buffer to disk. not yet glued to lua but will get round to that next time i sit down with norns HW

5 Likes
#27

I’m trying to expose some softcut parameters (based on halfsecond engine).

When I add:
params:add_separator()
local p = softcut.params()
params:add(p[1].rate)
params:add(p[1].pre_level)
Everything works as expected and I can see/map these 2 parameters within a script with the engine initialised.

Then if I go further and add a few more, it seems to lock up the parameters screen and I cant access it, for example:

`params:add_separator()`
`local p = softcut.params()`
`params:add(p[1].rate)`
`params:add(p[1].pre_level)`
`params:add(p[1].enable)`
`params:add(p[1].filter_lp)`
`params:add(p[1].filter_rq)`

Any thoughts why this might not work? This is pretty much my first attempt at customising stuff, so consider me a total novice :smiley:

#28

I was having the same issue earlier when creating a script based on halfsecond. I was able to scroll to the second cut param but when I changed it the number value wasn’t changing and the audio was unpleasant. Is there more glue needed than what’s in halfsecond that we’re missing?

EDIT - not in front of norns right now but it just occurred to me that maybe it should be

`local p = softcut.params()`
`params:add(p[1].rate)`
`params:add(p[2].pre_level)`
`params:add(p[3].enable`
`params:add(p[4].filter_lp)`
`params:add(p[5].filter_rq)`
2 Likes
#29

I’m on a phone r/n but will look when possible

Meantime, check for warnings about missing voice method

@Molotov, @speakerdamage

i looked. travelling with severely limited internet atm.

the params generated by softcut.params() method (which is a quick hack really) are kinda wonky. step size is not so useful, and the labels are goofy (i added some underscores, will make a minor PR) - but it basically works, i was able to add params for filter fc/rq/mode levels, rec/pre levels, loop/fade times, &c for multiple voices, from the maiden REPL

couple weird ones:

  • position is one that makes no real sense as a parameter.

  • loop points are basically useless because of the gigantic step size - better off making customized params appropriate to whatever the script is doing, and wrapping the lower-level setter methods exposed by softcut.lua module.

  • when i tried to set a param for rec flag some total crazy thing happened, some metro throwing errors, (@tehn is there a global called rec or something?? sorry i lost the error but i’m sure its reproducable)

but there is some weirdness where i can’t actually scroll to the end of the params list if the list is long enough - it neither moves the selection line, nor allows space at the bottom of the screen - which i take to be a bug in menu.lua. :biohazard:

btw @speakerdamage, sorry but the supposition in incorrect, p[1] is all the params for voice 1, p[2] for voice 2, &c.

hope that helps / makes sense

2 Likes
#30

yep, all useful info, thanks! :slight_smile:

#31

How many voices are available?

#32

currently there are 6.

i’m considering a change that might bump it back down (to 4 or 5), in exchange for 1) the ability for record / play heads to cross each other in the same buffer/region without glitching, and 2) more solid per-sample sync between voices for stereo or whatever.

4 Likes
#33

Non-norns owner here…
Just want to confirm that softcut is totally independent from supercollider/crone? and as such could theoretically be compiled outside of the norns ecosystem?

Possibly using lua/c to make a pd external? or even just a little app/daemon to be routed with jack? (Im sure its a non-trivial task to actually do this… but certainly interesting to consider!)

1 Like
#34

yes ! this is possible. when I have some time I’m planning on giving a max external a shot. hosting in jack as-is is also doable.

1 Like
#35

In 2.0 it’s already a standalone application/JACK client :slight_smile:

1 Like