Lua: Drum Trigger(beta)

[eugen2777]

This is an old demo.
Many new things have been added.

===============



The script captures and analyzes the audio from the selected track in the time selection.
On this basis, the script creates a midi-item.


Simple scheme:
Capture audio > Filter > Transient Detector(+ analyzer RMS and Peak levels at each point) > Creation MIDI.

How use:
Select the track, set the time selection in the analyzed area. Click "Get Selection" button.
Get Selection - this is the main button to capture the audio from the track.
To work with different audio, you may need to change some settings.

Main settings description:

• Filter settings:
  HP, LP sliders. It is High Pass, Low Pass.
  Out Gain slider - output signal level from the filter.
  
• Detector settings:
  Threshold - the threshold(in dB) below which audio is not analyzed.
  Sensetive - Min diff(in dB) between the fast and slow detector-envelopes. The smaller the value - more the detected transients.
  Retrig - Time of inactivity after the last trig in ms.
  Reduce Points - removes "weak" point.
  Detect Velo - detection time (in milliseconds) RMS and Peak levels for the calculation of velocity.
  Higher values can provide a more accurate result, but not always.
  
• MIDI settings:
  Create MIDI - creates a MIDI, depending on the settings(note, channel, note length).
  Under the button - Modes:
  Insert new item on new track, Insert new item on selected track -
  Use selected item - In this mode, MIDI be re-created automatically when you change any settings(without clicking on the "Create MIDI" button).
  RMS - Peak - determines how the Velocity value will be calculated.
  Velo Scale - scales the velocity between the minimum and maximum value.

Some additional features:

• Navigation.
  The script supports easy navigation with the mouse.
  Horizontal Zoom - Mouswheel,
  Vertical Zoom - Shift+Mouswheel,
  Move View(Scroll) - Middle mouse drag,
  Set Edit Cursor - Left click.
  
• Manual correction.
  You can delete or add markers manually. Additionally, you can change the position of the marker or the value of velocity.
  Delete Marker - Right click on Marker,
  Insert Marker - Right click on Empty Space,
  Move Marker - Shift+Left drag,
  Change Velocity - Ctrl+Left drag,
  Move Marker and Change Velocity - Shift+Ctrl+Left drag.
  

===============

Link(will be updated):
Drum trigger.lua

===============
How install - it is actual for all lua-scripts(unless otherwise stated):
Open Reaper. Actions>Show Action List. ReaScript: press "New".
Select the folder for scripts(By default - ...\Reaper\Scripts).
Specify the name and extension - .lua(it's mandatory). For Example, MyScript.lua. Click save. You will see a black window.
Copy the text of the script(link in the first post) in this window. Press Ctrl+S. Close the window. Now the script is available in the Action List.
===
In addition, you can use Reapack, but the link to my repository must be added manually

[vanhaze]

Errr..Oh My !!!

[X-Raym]

HP, LP, trasnient analysis, right from ReaScript... That's one the most advanced audio analysis ReaScript :P

For the task, I would have used GrooveExtractor Lite - LeSound by AudioGaming. Maybe you can take some inspiration from it.

But I'm really curious about how far you could go with a ReaScript solution.
What could be the benefit against GrooveExtractor ?

impressive job so far

[The-Zeronaut]

Seems impressive and has potential to become EPIC.
If you would be able to add even some of these features it would be amazing

I know nothing about programming or reaper scripts xD so i don't know if im asking for something difficult or simply impossible

-If one could individually add or remove "markers" where you want to put the midi note instead of using only the detection threshold.

-Being able to move the markers from left to right to put it exactly where you want if you don't agree with the detection.

-Being able to change the velocity of every individual midi note

-Slider/knobs to compress or expand the velocities and to lower or increase the velocities if all the hits detected.

-Being able to select the midi note output (ex: 36 C3)and the length of said midi notes (1/16 ,1/32, etc)

examples:

https://youtu.be/AEeDWQoilTY?t=2m15s

https://youtu.be/j4jSCiIAAcc?t=44s

With that said, after testing it on some very clean snare/kick trigger tracks:

PROS:
just being able to convert drums to midi without having to
split them or making chromatic midi and especially being able to zoom in and out where you want with the mouse wheel is something really amazing

CONS:
Right now you cant zoom IN very much and the blue/red color for the detection make it very difficult to fine tune or see if its really accurate.

[musicbynumbers]

whoa! very cool!

I'll give it a go when I can. thanks!

[eugen2777]

X-Raym, thank you
The-Zeronaut, it will be added

[Pfhuck]

This is amazing eugen!

I would also like to see add/move/replace of markers. Velocity/note and length are easy to do in the midi editor. However it would be nice to have those options as well.

Already a big time saver!

Many thanks!

[The-Zeronaut]

Amazing!

[eugen2777]

Some new features:
New graphics quality with a 50-level zoom.

New mode - auto-replacement midi-note in the selected item.

[eugen2777]

Added

[The-Zeronaut]

Keeps getting better and better

I would like to be able to zoom more (i always check the accuracy of drum audio to midi at sample level)
and also make an option/checkbox the "RED" (i think its the filter) appear and disappear because its confusing to see exactly where the midi note is.

i LOVE that you can see the play cursor on the window but would be amazing if when you are zoomed in the waveform display followed the play cursor from left to right like when you do middle drag

what does the "draw" option change? is it the quality of the waveform picture or is it something else?

[eugen2777]

The max

[hopi]

super kewl eugen Please keep going!

[Jae.Thomas]

this is really awesome, and I hope it continues - would this be able to be used to send "grooves" to midi tracks?

[PitchSlap]

WOW! Great job!

I definitely got a bit jealous when Ableton Live got audio-to-MIDI and audio-to-drum MIDI conversion so I'm excited to check this out.
I think it would probably be a lost faster/easier to use this a creative tool for generating new MIDI patterns from drum loops, rather than trying to exactly convert a loop to MIDI.


I realize this is a very early version, but thought I'd share a bunch of ideas:

-Use Rex slice points when available.

-It would be helpful if there were a few included detection presets, and users could save their own. For example, we could choose "kick", "snare", "hi-hat" etc. and the filter, threshold, sensitivity, as well as the note value for the created MIDI would change accordingly.

-Option to create MIDI as new take. That way we could create pattern variations with slightly different detection settings and cycle between takes for arrangement variations and change the item pitch to trigger different samples.

-Instead of note numbers, use the associated GM drum name. Include a few more common drums/percussion based on the GM map.

-Allow auditioning of the filter split so we can more accurately choose the crossover point.

-Not a huge deal since we can quantize after, but it would be nice to have a grid setting and quantize strength for changing the timing of detected MIDI. Triplets and double-time are great for generating interesting patterns.

-Optionally overlay a beat based timeline on the waveform display.

-Double click on parameter values to return them to default (wouldn't really be needed if there were detection presets).

[The-Zeronaut]

Originally Posted by PitchSlap

-Allow auditioning of the filter split so we can more accurately choose the crossover point.

-Optionally overlay a beat based timeline on the waveform display.

+1 Great ideas
(but the grid on the second one be able to make it appear/disappear)

i honestly think that when this is complete it will be one of the best things in Reaper.

[eugen2777]

Update.

[eugen2777]

Ok, I think

[The-Zeronaut]

I´m getting a pop-up
"ReaScript console output.
Full process time: "
every time i hit the button "get selection"

The add/delete midi markers work perfectly.

one question:
What does the "filter gain" slide actually do? is it just to make the "red" bigger?

[eugen2777]

No, it really

[Pfhuck]

Thank you very much eugen! This script was already awesome.

Add/move/delete markers in this update is amazing!

Can't wait to see what you come up with next

[eugen2777]

Nothing

[eugen2777]

Can I delete this topic.
Or at least change the name of the theme.
At the given moment, it is already fully working script.
Of course, many of the changes will be, but I do not want people to take it as a test.
It is almost ready to be used in real projects
====================
That's my fault. Initially, I did not want to develop it, so called wrong topic.
====================
Simply delete that in brackets
====================
I apologize and I will continue to act according to the rules

[Reno.thestraws]

[Bassman1]

Can someone please tell how I can add this?

I have Reapack but can't find this, am I barking up the wrong tree guys?

[Pet]

Go to post #1, click on "Link". This opens the script in a new window. Then "File" => "Save page as..."

[Bassman1]

Thank you, and add to reascript?

[Pet]

You mean ReaPack or how to load the script into Reaper?

Load script into Reaper:

• open action window
• on the right bottom: ReaScript => Load...
• go to the folder where you stored the script and load it...

Hope that's what you meant.

Including it in the ReaPack is something you can't do on your own that easy, as far as I know...

[Bassman1]

Thanks again, but I still cannot find a way to use this. I saved the page as you said. Maybe I'm confused, but I thought this was a Reascript. I tried adding it, as you said, but 'Actions' was greyed out, so I could not select it.

[xpander]

Saving a web page like that may add a .txt (or some other) file extension to the end of the file name. So you might have a file named eg. "GT_Drum%20trigg(Test).lua.txt" in there? If that's the case, rename the file as "GT_Drum trigger(Test).lua" and it should be good to be loaded via Actions/ReaScript/Load...

[Bassman1]

Ah finally I've loaded it...Thanks guys. I now need to learn to use it

Hope there's a video online to learn this. Must be my age

[vanhaze]

Agreed !
A video tutorial would be very helpful to understand it fully :0)

[Pet]

Originally Posted by Bassman1

Thanks again, but I still cannot find a way to use this. I saved the page as you said...

Originally Posted by xpander

Saving a web page like that may add a .txt (or some other) file extension to the end of the file name...

Hi guys, before I posted, I checked the "Save page as..." thingy and it was stored as ".lua" by default. So I didn't state it explicitly - just to keep it simple...my bad, sorry.

But maybe it's of some interest that both still happens and you still have to have pay attention to.

[eugen2777]

I can not explain the simple questions here.
On other issues - will be added.

[Pfhuck]

Thank you for the velocity/move marker functionality eugen!

[mpl]

Originally Posted by Pet

Including it in the ReaPack is something you can't do on your own that easy, as far as I know...

Originally Posted by Bassman1

Can someone please tell how I can add this? I have Reapack but can't find this, am I barking up the wrong tree guys?

Eugene`s repo is ReaPack compatible actually. It is just not included by default yet. To get his stuff up-to-date and ready to use, you need to add it manually:
ReaPack > Import repository > CopyPaste this link

[Pet]

Thank you mpl!

[Reno.thestraws]

work gret!

just test it on a raw kick drum track and it's very accurate!

works better than toontrack drumtracker

[eugen2777]

Updated.
Add Velocity Scale - interesting thing, Reduce Points, note,chan,len etc
Fixed some err. Im sorry , тут кто-то на русском говорит?

[raiirock]

Да конечно )