Time Stretch Mode: Script for correlating Playing Speed to the Metronome Tempo

[dom]

Hello Logelloop People

I am new to Logelloop and so far i’m very impressed by the clever functionalities for building loops an playing with them!

I want to use Logelloop as a “sidecar” looper in conjunction with Ableton Live. Connection via Link works great so far.

What I miss though is the possibility to time-stretch the loops in correlation to the metronome (like “warped” clips do in Ableton Live).

Example scenario: i have a 4 beats long loop (main looper/modular insert looper, doesn’t matter) and Ableton or Logelloop changes the metronome tempo. My loop will time-stretch accordingly and remain exact 4 beats long in the new tempo. That way it stays continuously 4 bars everytime the metronome changes tempo (Like you file player already does natively, right?)

Is this possible via scripting? I saw a remark on your website (Page: https://www.logelloop.com/2025/11/30/the-modular-loopers-playback-modes/ ) which says that this is possible via script. (Time Stretch Mode: “The speed can be correlated to the metronome tempo variation using a script”)
If there is a working, reliable script/macro, that does that, i would be really happy if you could share that. I am of course also looking into making macros by myself, but there is a high learning curve and i imagine it can become quite complicated with time-sensitive tasks… if someone with experience has already made a macro for this i will happily use this to get me started.

Thank you a lot in advance!
Dom

[Philippe]

Hi Dom,
I am sorry for this very late answer, we are very busy at the moment.

Having this behavior as a native functionality in Logelloop is in the to do list but I miss time to implement it…
Anyway, it is not so difficult to Stretch a loop in relation to the Metronome’s BPM with a script.

You can try this one :

// Define the reference BPM which is the BPM of the loop you want to stretch
Declare float $bpm_reference$ = 124.717

DoRepeat
// You wait for a BPM change in the Logelloop's metronome
	WaitVariableChange $metro_bpm$

// And then, you applicate the speed calculated from the new Logelloop BPM and the reference
// The looper you want to strech must be in fx1 insert 1
// and it must be set to Time Stretch mode

	InsertSendMessage fx1 1 SpeedFloat {$metro_bpm$ / $bpm_reference$}

	//WaitDuration 10

// You restart the Logelloop to be in sync
InsertSendMessage fx1 1 Start    

// You wait a little and you restart the script to be ready to set a new speed to your loop
WaitDuration 300

While true

1 – Put this script in a macro in Logelloop.
2 – Load a looper in fx1 insert 1
3 – Load/record a loop in fx1
4 – Replace the BPM ref value in $bpm_reference$ by the bpm of the loop you have in fx1
5 – Start the macro
6 – change the metronome bpm in Logelloop

The loop in fx1 should restart at the right speed when the tempo is changed.

This is a very basic script as a template.
If you tell me more about your precise case, we may improve the behavior.

Best regards,
Philippe

[Author]

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