Symmetry Algo, unexpected behavior with note length >1

If all notes are length one on a track than applying the Symmetry Algo w/Time and Duplication works as expected. However, note lengths greater than one are not correctly mirrored.

To see this, create a half bar as shown below where “x” indicates note on and “~” indicates lengths greater than one:

x x x~~

After applying the Symmetry Algo you get the full bar:

x x x~~    x~x x

Is this expected behavior?

From my persepctive, the natural expectation would be:

x x x~~  x~~ x x

i.e I expected that when mirroring the notes the “ends” would become “starts” and vice versa


While it is usually expected for the start of a note to be ‘on time’, the end is seldomly something one can expect to be perfectly on the grid, especially when dealing with recorded material. So this was a deliberate design decision.

I can see the benefit of a time symmetry with the intuitive interpretation as well, it could be an additional mode


I love that you guys at Squarp program these great boxes with musicality in mind! Not just pure mathematics.

I agree that it would be more intuitive to do the thing pmags suggested, but it I think you’re right and this would probably produce more musical results than a “perfect mirror” would.

However, if you do implement a new “intuitive” (“mirror”) version of this algo, you might want to add a pre-quantize option, to first quantize the note ends (while keeping the note lengths) before you flip them. This would maybe be the best of both worlds?

Thanks for the explanation, Thibault.

An additional mode would indeed be much appreciated on my end.