restrike

restrike re-touches every note you play, on a loose pulse, each strike softer than the last.

Strike a chord and it does not just decay: it returns, slightly off the grid (jitter), a little quieter each time (decay), settling toward a whisper until it fades below floor or its strikes run out (max). The whole series is set the moment the note sounds, each return a short self-contained touch; your release ends only the original note, and the returns keep arriving as they fade, whether or not you are still holding. The lineage is Morton Feldman: soft attacks repeating irregularly at the edge of audibility, patient rather than rhythmic.

The jitter is seeded, so a take’s timing is reproducible.

Parameters

Exactly one of interval= or beats= must be given; see Time and tempo.

Parameter	Type	Default	Range
seed	integer	required	any unsigned 64-bit value
interval	duration string	required (or beats)	positive, "250ms" or "1.5s" form
beats	number	required (or interval)	finite, greater than 0
jitter	number	0.15	0..=0.9, fraction of the interval
decay	number	0.7	greater than 0, less than 1
floor	velocity	8	1..=127
max	integer	12	1..=24 strikes per note

Example

miditool.kdl

input "Roland"
output virtual="miditool Out"

restrike seed=9 interval="2s" jitter=0.2

Touch a note and let it go; it comes back every two seconds or so, dying away.

Try this

Slower, softer, more patient. Strikes drift up to half the interval off the pulse and fade nearly to silence:

restrike seed=9 interval="3.5s" jitter=0.5 decay=0.55 floor=4 max=8

Pair it with echo in one chain (as in the echoes example config) and held notes both trail and breathe.