run_edrumulus.sh fails at drum kit setup line 140

[AlienDiva]

Hello, I am setting up edrumulus software on a laptop with Ubuntu 22.04 server. The package requirements and compile process went without a drama but run_edrumulus.sh fails at drum kit setup line 140 with the following notable message:

We assume that you have created the edrumuluskit with edrumulus/tools/mixdown_kits.m or PearlMMX is present

I've searched for PearlMMX kit and found nothing and have no idea how to "create the edrumuluskit with edrumulus/tools/mixdown_kits.m"

Running drumgizmo standalone with jack manually from the command line using DRSKit kit which I had already run_edrumulus.sh runs and I get the terminal gui.

I feel there's a whole bunch of something I'm missing with the kit setup so asking for help with clarification on the failed task.

Thankyou kindly in advance.

[corrados]

The PearlMMX kit is based on samples I recorded from my acoustic kit. Unfortunately, these files are not (yet) available for download. Therefore, you cannot use it.

The way I am using this kit is to have a directory source_samples in the tools directory and then I call the Python script create_drumgizmo_kit.py to create the actual PearlMMX kit. The samples are in an "experimental" state since I did testing the positional sensing also on the toms. As soon as I am happy with the kit (and that will not be anytime soon), I plan to upload it to the official Drumgizmo page. I am already in contact with the main developer of Drumgizmo.

Anyway, the "old" way of creating a Drumgizmo kit for Edrumulus usage was to download the official Drumgizmo kits and run the mixdown_kits.m file in Octave. This script can either convert the entire kit (using, e.g., kit_select=3) or a selection of different instrument from different Drumgizmo kits (like it is configured right now). The intention of this script was to mix down the multi channel instruments of the official Drumgizmo kits to a stereo sample to reduce the size of the kits and also to have a simple way of playing these files without having to connect a DAW to mix all the channels.

I have to admit that I did not run that script mixdown_kits.m for a long time. I hope that it still works. If it works, it will create a subfolder drumuluskit in the tool directory which is then automatically used by the run_edrumulus.sh script.

[AlienDiva]

I can confirm that mixdown_kits.m octave script still works absolutely fine once I worked out what I was doing, the kit samples mix down to ./edrumuluskit/ if select_kit=N is set at the top of the script. I couldn't see how to select a kit as a command line argument so assuming that's not supported.

Without specifying a kit (kit_select=[]) the script borks and complains about file inclusion for the mapex_mars kit which I couldn't find.

So all good. Very useful tool, I've been fumbling around with sox in bash to convert multichannel samples to stereo for headless SBC.

[corrados]

The mapex_mars was also a recoding I have done with my old snare drum. It is actually not an entire kit but only the snare with positional sensing support. These recording are old and pretty bad so that I do not want to make these available at all.

[corrados]

I have now added the source samples for the PearlMMX kit. The zip file is added to the latest release 0.8: https://github.com/corrados/edrumulus/releases/tag/r0_8
Just unzip the files in edrumulus/tools/source_samples and run the create_drumgizmo_kit.py script.

[corrados]

I have also added the full PearlMMX drum kit now: https://github.com/corrados/edrumulus/releases/download/r0_8/PearlMMX.zip
It should (hopefully) work to unzip it on the tools directory and running the run_edrumulus.sh script.
I have created a Youtube video to showcase the sound of the PearlMMX kit: https://youtu.be/xHr5WekxPq0?si=nh9tXmqXq7vBZL9G

[AlienDiva]

Thankyou for your prompt and comprehensive answers as well as your excellent efforts into the project.

So hopefully I understand correctly, mixdown_kits.m is a MATLAB script to recreate kits suitable for rPi or other SBC and not a necessary step. Except for recreating 2 channel simplified version of a kit which does away with the requirements of interfacing with a DAW directly correct?

run_edrumulus.sh at the point of failure, which is loading of the nonexistent drumgizmo kits could in fact load a super basic kit (does not need to be perfect) which could be included with edumulus as you have suggested for the sake of continuity? Therein the user can explore options.

The sample player also could be any other CLI based jack client, another option is sfizz_jack which is actively developed and while not perfect a reasonable simplified solution. I am looking into that further.

Anyhow, these are some of my ideas for today, I will say the MATLAB requirements for building kits is not my favourite but hopefully in time we can provide an alternative which is easily manageable.

Happy drumming and again may I express appreciation for your efforts towards the DIY community.

[corrados]

Here is a link to my Drumgizmo branch where you can see all my commits: http://cgit.drumgizmo.org/drumgizmo.git/log/?h=edrumulus

[corrados]

BTW, if you use my run_edrumulus.sh script, it will automatically checkout my branch, see:

edrumulus/tools/run_edrumulus.sh

Line 116 in 26a325d

git checkout edrumulus

[AlienDiva]

Do you have an example how to use the snare position articulations in Drumgizmo. I'm assuming something should be added to the instrument XML?

I did manage to get a basic test snare inner-to-outer hit with layer crossfade working in Sfizz.4 velocity layers and 2 articulations (centre and edge). The positional sensing continuous message on cc16 which it appears you are using, 127 for centre and 0 for outer, anything in between mixes the smaples. still needs work but it looks promising. Finding suitable kit samples is another story

[corrados]

The Drumgizmo main developer deva was so kind to create a snare instrument in Drumgizmo with full positional sensing support. You can download it here: https://drumgizmo.org/kits/snare-position.zip
If you open the file snare-position/snare-position.xml, you will find an example XML. The new parameter position="0" defines the position with a value between 0 to 1, where 0 is the center of the snare and 1 is the edge.

[AlienDiva]

Awesome thanks I'll check that out.

[3hhh]

This stereo mix here should work too, shouldn't it?
https://drumgizmo.org/kits/CrocellKit/CrocellKit_Stereo_MIX.rar

Unfortunately I cannot get any sound from drumgizmo so far, but I fear it might not be related to the kit.
In fact I got sound once, but only after waiting for a very long time and only for certain Midi notes (40 worked, 38 didn't - even though the kit has mapped both). Subsequent tries failed again. Writing to a wav file with drumgizmo generates huge files that are way longer than the time which passed in reality. They're usually quiet as well...
I tried on two different machines with the same results so far.

[corrados]

This stereo mix here should work too, shouldn't it?

Haven't tried but I guess it should work.
If you want to use it together with the run_edrumulus.sh, you have to adjust the Drumgizmo jack output names for this kit.

Unfortunately I cannot get any sound from drumgizmo so far

If you have issues running Drumgizmo, I recommend to post a message in the following forum: this forum.

[3hhh]

Got it running with jack, looks like pipewire & drumgizmo is a bad idea.

[corrados]

FYI, I have just made changes to the Edrumulus repo but also to the Drumgizmo edrumulus branch. If you use the run_edrumulus.sh script, I recommend to delete the drumgizmo folder so that the script clones and makes it again to get the most recent Drumgizmo changes. Otherwise the mixdown_kits.m and create_drumgizmo_kit.py are no longer compatible to the old Drumgizmo version.

[3hhh]

Thanks a lot, also for the Pearl MMX samples! :-)