Granchild

rseymour · 2021-03-06T15:02:38.428Z

I’ve had a great time with this script and a 128 grid. Agreed on power being important for the norns shield if you don’t want “underclocked” sounding glitches. One thing I don’t know about the grain engine is does it have an attack/release option or are they always hard stop and start. I ended up recording some short cello notes and getting a lot of ticks that sound like grains starting/stopping “discontinuously” instead of zero. I know the morphogene has a setting to smooth the grains out. Is there a way to do that using the engine under granchild?

For fun I recorded 4 of the same note and then just used pitch down / up to change tonality. With low density and rather small size it created a really nice rhythm. Can’t wait to keep exploring. Thanks.

zebra · 2021-03-06T17:33:50.503Z

It employs the GrainBuf ugen with its default grain envelope, which is a Hann window. Look elsewhere for cause of clicks…

The recording system seems like a good suspect, it is a little convoluted and funky. (captures to softcut buffer, writes buffer, reads buffer back in SC. All async operations with I think little protection against grain pos overlapping with regions of active buffer replacement.).

I might recommend implementing the recording path directly in the SC engine instead.

zebra · 2021-03-08T05:21:29.210Z

just a PSA that the filter resonance parameter is rq or the reciprocal of Q.

in other words, it is the bandwidth of the filter as a ratio of the cutoff frequency.

(this is true for most filter specs in supecollider, and also for the filters in softcut.)

so yea, rq==0 is rarely advisable since it’s requesting infinitely small bandwidth and will blow up or at least be very loud. i’d clamp the param at 0.001 or something. (softcut does this internally for its filters, at the level of the command handler, not the DSP.)

JaggedNZ · 2021-03-08T06:06:51.609Z

zebra:

filter resonance parameter is rq or the reciprocal of Q

Now you tell me!

More seriously once I realised this was inverted ( and my hearing had recovered ) I worked up in it slowly there was a value resulted in slow decaying self oscillation and yes clamping somewhere after this value would be a good idea.

thmshckr · 2021-03-08T15:17:47.045Z

awesome script, kudos!
im trying to get it to work with Midigrid, but i have no succes in integrating it in the .lua script. itried in line 215 just before:

granchild_grid=granchild:new({grid_on=true,toggleable=true})

but i guess thats the wrong spot.
any help along the way would be greatly appreciated, thanks for this awesome script again!

DoS · 2021-03-08T15:56:47.514Z

thmshckr:

but i guess thats the wrong spot.

Put it in /granchild/lib/granchild.lua at line 18 as shown here:

-- initiate the grid
  local grid = include("midigrid/lib/mg_128")
  m.g=grid.connect()

(Edited to remove erroneous code for single alternative grids)

JaggedNZ · 2021-03-08T19:10:08.351Z

@thmshckr Launchpad users should use mg_128 for this script even if they only have a single launchpad. The two top left most buttons will let you swap between tracks 1-2 & tracks 3&4.

thmshckr · 2021-03-08T19:58:04.883Z

thx for quick reply, but grids wont light up. i put

local grid = include("midigrid/lib/mg_128")

in line 18 of the .lua, but no activity. maybe im doing smth wrong?

ldezem · 2021-03-09T18:37:26.438Z

Did you make the change to the grandchild.lua script in the lib directory? Took me a while to figure this out but got this working on a launchpad mini mk1.

thmshckr · 2021-03-09T19:01:59.759Z

exactly THAT was the problem, works just fine now.

thx!

SPIKE · 2021-03-10T05:27:31.646Z

@infinitedigits
one bug went away with the norns OS update.

noticing a strange other .
in voice one:
the last button (6th row third column) of the Active Area does not light up without several pushes.

and…it looks l spoke too soon…

the grid lockup happens again when trying to adjust the pitch on voice 1.

i captured the crash with maiden:

Summary

script load: /home/we/dust/code/granchild/granchild.lua

cleanup

script clear

including /home/we/dust/code/granchild/lib/granchild.lua

including /home/we/dust/code/granchild/lib/json.lua

script run

loading engine: ZGlut

reading PMAP /home/we/dust/data/granchild/granchild.pmap

m.read: /home/we/dust/data/granchild/granchild.pmap not read.

Engine.register_commands; count: 25

___ engine commands ___

cutoff if

delay_damp f

delay_diff f

delay_fdbk f

delay_mod_depth f

delay_mod_freq f

delay_size f

delay_time f

delay_volume f

density if

envscale if

gain if

gate ii

jitter if

overtones if

pitch if

q if

read is

seek if

send if

size if

speed if

spread if

subharmonics if

volume if

___ polls ___

amp_in_l

amp_in_r

amp_out_l

amp_out_r

cpu_avg

cpu_peak

phase_1

phase_2

phase_3

phase_4

pitch_in_l

pitch_in_r

script init

sample -

grid columns: 16

change_volume 1 1 0.3

change_volume 1 1 0.35

change_volume 1 1 0.4

change_volume 1 1 0.45

4

change_pitch_mod 1 -1 -3

3

change_pitch_mod 1 -1 -5

2

change_pitch_mod 1 -1 -7

1

change_pitch_mod 1 -1 -12

1

change_pitch_mod 1 -1 -12

switching!

i loaded the script.
no recorded sequence or audio.
tried changing volume and then adjusted the pitch and BAM…freeze.

just for good measure…i tested again on voice 1.
same scenario everything will make adjustments until i mess with the pitch…

Summary

?

pitch if

q if

read is

seek if

send if

size if

speed if

spread if

subharmonics if

volume if

___ polls ___

amp_in_l

amp_in_r

amp_out_l

amp_out_r

cpu_avg

cpu_peak

phase_1

phase_2

phase_3

phase_4

pitch_in_l

pitch_in_r

script init

sample -

grid columns: 16

change_volume 1 1 0.3

change_volume 1 1 0.35

change_volume 1 1 0.4

change_volume 1 1 0.45

change_volume 1 1 0.5

change_volume 1 1 0.55

change_volume 1 1 0.6

change_volume 1 1 0.65

change_speed 1 -1 -0.1

change_speed 1 -1 -0.2

change_speed 1 -1 -0.3

change_speed 1 -1 -0.4

change_speed 1 -1 -0.5

change_speed 1 -1 -0.6

change_speed 1 -1 -0.7

change_size 1 -1 4

change_size 1 -1 3

change_speed 1 -1 -0.8

change_speed 1 -1 -0.9

change_speed 1 1 -0.8

change_speed 1 1 -0.7

change_speed 1 1 -0.6

change_speed 1 1 -0.5

change_speed 1 -1 -0.6

change_speed 1 -1 -0.7

change_speed 1 -1 -0.8

change_speed 1 -1 -0.9

change_speed 1 -1 -1.0

change_speed 1 -1 -1.1

change_speed 1 -1 -1.2

change_speed 1 -1 -1.3

change_speed 1 1 -1.2

change_speed 1 1 -1.1

change_speed 1 1 -1.0

change_speed 1 1 -0.9

change_speed 1 1 -0.8

change_speed 1 1 -0.7

change_speed 1 1 -0.6

change_speed 1 1 -0.5

change_speed 1 1 -0.4

change_speed 1 1 -0.3

change_speed 1 1 -0.2

change_speed 1 1 -0.1

change_speed 1 1 0.0

change_speed 1 1 0.1

change_density_mod 1 1 13

change_density_mod 1 1 14

change_density_mod 1 1 15

change_density_mod 1 1 16

change_density_mod 1 1 17

change_size 1 1 4

change_size 1 1 5

change_size 1 1 6

change_size 1 1 7

4

change_pitch_mod 1 -1 -3

change_volume 1 1 0.7

change_volume 1 1 0.75

change_volume 1 1 0.8

change_volume 1 -1 0.75

change_volume 1 -1 0.7

change_volume 1 -1 0.65

change_volume 1 -1 0.6

change_volume 1 -1 0.55

change_volume 1 -1 0.5

change_volume 1 -1 0.45

change_volume 1 1 0.5

change_volume 1 1 0.55

change_volume 1 1 0.6

change_volume 1 1 0.65

change_volume 1 1 0.7

change_volume 1 1 0.75

change_volume 1 1 0.8

3

change_pitch_mod 1 -1 -5

2

change_pitch_mod 1 -1 -7

switching!

and ONE more test for good measure…

reloaded the script.
no recordings.
made adjustments on all four voices
CRASH as soon as i messed with pitch on voice 1.

Summary

?

change_volume 4 -1 0.2

change_volume 4 -1 0.15

change_volume 4 -1 0.1

change_volume 4 1 0.15

change_volume 4 1 0.2

change_volume 4 1 0.25

change_volume 4 1 0.3

change_volume 4 1 0.35

change_volume 3 -1 0.2

change_volume 3 -1 0.15

change_volume 3 -1 0.1

change_volume 3 -1 0.05

change_volume 3 1 0.1

change_volume 3 1 0.15

change_volume 3 1 0.2

change_volume 3 1 0.25

change_volume 2 -1 0.2

change_volume 2 -1 0.15

change_volume 2 -1 0.1

change_volume 2 -1 0.05

change_volume 2 -1 0.0

change_volume 2 1 0.05

change_volume 2 1 0.1

change_volume 2 1 0.15

change_volume 1 -1 0.2

change_volume 1 -1 0.15

change_volume 1 1 0.2

change_volume 1 1 0.25

change_volume 1 1 0.3

change_volume 1 1 0.35

3

change_pitch_mod 4 -1 -5

2

change_pitch_mod 4 -1 -7

1

change_pitch_mod 4 -1 -12

2

change_pitch_mod 4 1 -7

3

change_pitch_mod 4 1 -5

1

change_pitch_mod 3 -1 -12

1

change_pitch_mod 3 -1 -12

1

change_pitch_mod 3 -1 -12

2

change_pitch_mod 3 1 -7

3

change_pitch_mod 3 1 -5

4

change_pitch_mod 2 -1 -3

3

change_pitch_mod 2 -1 -5

2

change_pitch_mod 2 -1 -7

3

change_pitch_mod 2 1 -5

4

change_pitch_mod 2 1 -3

5

change_pitch_mod 2 1 0

4

change_pitch_mod 1 -1 -3

3

change_pitch_mod 1 -1 -5

2

change_pitch_mod 1 -1 -7

1

change_pitch_mod 1 -1 -12

2

change_pitch_mod 1 1 -7

3

change_pitch_mod 1 1 -5

4

change_pitch_mod 1 1 -3

5

change_pitch_mod 1 1 0

6

change_pitch_mod 1 1 3

7

change_pitch_mod 1 1 5

6

change_pitch_mod 1 -1 3

5

change_pitch_mod 1 -1 0

4

change_pitch_mod 1 -1 -3

switching!

danbond · 2021-03-10T13:17:06.443Z

https://www.instagram.com/p/CMOvcmTBlZW/?utm_source=ig_web_copy_link

First go here.

Just got a 64 grid, fired it up and it’s working on Granchild first go, so looking forward to going deeper! Amazing work.

infinitedigits · 2021-03-10T15:16:32.859Z

@SPIKE found the it was a total error on my part. i left in some code that would switch between granchild and kolor. you found the button that switched it…but instead of switching it it just disables granchild lol. i took that out completely in the new updated version (available now).

@danbond sounds so good! i love the granulated drums you got going

infinitedigits · 2021-03-21T03:34:17.022Z

MatthewAshmore:

Would it be possible to set the the min/max to go beyond 1 octave? I see you can do it on the norns but it appears it’s scaled back when using the grid.

yes! its a code change you need to make at the moment to do this. but its easy. change this one line to include all numbers for all pitches you want.

MatthewAshmore:

now I’m wondering if midi input would be a great addition

midi input would be cool! do you envision using the midi keyboard to simply re-pitch the sample? re-positioning/seeking could be cool too but intuitive to me how that would work. pitching is easy enough though and gives me some interesting ideas…

jhyde · 2021-03-22T16:52:20.698Z

hey! wondering if there is a way to change the range of the random values of the lfo, like in the script Twine? I found myself wanting the volume level to go higher than its set to with the lfo on.

thanks!

blueroses · 2021-05-05T19:15:58.735Z

encephalitislethargi:

i might have missed this answer somewhere, but is there a way to clear the live recording buffer without restarting the script?

20 characters of +1!

infinitedigits · 2021-05-06T01:52:47.114Z

jhyde:

wondering if there is a way to change the range of the random values of the lfo

sorry for the slow reply @jhyde, in my mind I replied to you you can change the range of random values in these lines of the code.

encephalitislethargi:

is there a way to clear the live recording buffer without restarting the script?

I don’t mean to be pedantic here, but I just want to be clear so here goes a little coding blather

there is actually no live recording buffer that is granulated. when you record live input, it is temporarily recorded into a live buffer (via softcut) and then when you stop recording live input it immediately writes it to a file and then sends that file to the engine to be granulated. these are the sounds that you play with. so the only way to “clear” a sound is to load a different file…although I don’t believe you can load “no file” at the moment to clear it. a cheap hack might be to load 1 second of silence which will replace that stuff you recorded…but actually in practice I just turn down the volume of that track so it doesn’t play anymore.

but actually, I might be totally ignorant to why you need to clear a sound. is there a specific thing you are trying to achieve to clear a sound? is it just to turn it off quickly? or replace it with something else?

jhyde · 2021-05-06T06:55:59.420Z

perfect, thank you so much! I was also curious about whether its possible to smooth the volume lfo values a bit more? If I understand correctly, they are stepping in increments according to the sequencer clock? I’m finding the steps quite audibly jumpy if that makes sense, so was hoping to make it less transparent! thanks again!

blueroses · 2021-05-06T09:42:53.690Z

infinitedigits:

but actually, I might be totally ignorant to why you need to clear a sound. is there a specific thing you are trying to achieve to clear a sound? is it just to turn it off quickly? or replace it with something else?

from my own perspective i’m just thinking of a quick way to ‘start afresh’ - i often end up having recorded a bunch of patterns and had a grand old time manipulating them for ages, then get to a point where I want to start with a clean slate, all new sounds etc, reset playback speed/direction etc. Although now that I think about it reloading the script also has the side benefit of resetting the grid (launchpad via midigrid in my case) which simply clearing the buffers wouldn’t do I suppose. So maybe things are fine as they are; still could be a useful option though!

In any case this is absolutely one of my favourite scripts - took a while to figure it out but it’s pretty indispensable now

infinitedigits · 2021-05-06T14:17:19.433Z

jhyde:

possible to smooth the volume lfo values a bit more?

yeah! I see the engine isn’t actually lagging the main volume. you can edit the engine to smooth it out by adding a line right here:

gain = Lag.kr(gain,0.5);

which will smooth things out to ~1/2 second. that’s probably something that should be added in, don’t know why it isn’t already there

encephalitislethargi:

sorry for not grasping this

no need to be sorry! I tend to be very minimal when it comes to docs/explanations…partly to elevate the joy of exploration and ~~partly~~ mostly because I struggle to explain why I did things the way I did.

encephalitislethargi:

is it sequential from 1-4? do you select the voice before pressing “starts record live input” by making the 1st pad in each voice’s play area active?

ah! I think this might be the confusing bit! the diagram up top shows the grid layout and it does show the record button on voice 4…but I was trying to imply that that same position is the record button on each of the voices. to start/stop live recording in voice 1 you press the button on the 7th row, 3rd column. voice 2 is the 7th row, 7th column, etc., etc. the voice is selected by the button as each “voice” is the same pattern and that pattern is stamped across the grid 4 times. maybe that clears it up? if not, please let me know and no worries

also, a general question - is it useful to have a video explaining a script? I usually just make a little demo but that leaves out a lot of explanation. I don’t make many video explanations because I don’t personally find them useful (I’d rather fool around for 20 min than watch 20 min video but that is my weird way of learning) but its something I could do. I totally get that there are auditory learners out there that might not pick up any of these doc stuff.

blueroses:

i’m just thinking of a quick way to ‘start afresh’

yeah I get that! i could make a key combo that does a reset on a sound. (that would’ve been useful for me a few times too).