MIDI Mute for Elektron Analog Rytm

Muted tracks also ignore MIDI notes coming in over USB and DIN, and a held note stops when its track is muted.

Module version 0.1.0-experimental. Base firmware: 1.74.

About this module

On stock OS 1.74 a mute stops the sequencer only: a note from a keyboard or DAW still plays the muted track. With MUTE MIDI IN on, a Note On for a muted track, or for one left out of a solo, is dropped, on its track channel and on the AUTO channel, from USB and DIN MIDI alike. When a track is muted while it holds a note that came in over MIDI, that note is released as its Note Off would release it, so nothing hangs. Unmuting plays nothing; the next Note On plays again.

• Mutes and solo silence incoming MIDI notes as they silence the sequencer.
• A note held over MIDI is released when its track is muted, so nothing sticks.
• USB and DIN MIDI, track channels and the AUTO channel alike.
• Off by default: one checkbox in GLOBAL > MIDI CONFIG > PORT CONFIG, kept with the project.

How to use it

1. Press GLOBAL, choose MIDI CONFIG, then PORT CONFIG, and go down to the last row, MUTE MIDI IN. Press YES to check it, then NO to leave the menus.
2. Play BD from a keyboard or DAW: on the AUTO channel (note 0), or on BD's own channel (notes 12-59), over USB or DIN.
3. Press MUTE, then the BD pad: BD is muted, and the same notes no longer play it. The other tracks still play.
4. Hold a note for BD and mute BD while you hold it: the note stops instead of hanging.
5. Unmute BD (the BD pad again in MUTE mode) and play: BD plays again.

Controls

MUTE MIDI IN

Checked, incoming MIDI Note Ons for muted tracks, and for tracks left out of a solo, are dropped, and notes MIDI holds on a track are released when it is silenced; unchecked, MIDI is stock. GLOBAL > MIDI CONFIG > PORT CONFIG, the last row; YES toggles, RIGHT checks, LEFT unchecks. Kept with the project.

Compatibility notes

• A track is silenced as the sequencer silences it: while any track is soloed (MIDI CC 93), every track but the soloed ones, even a soloed track that is muted; otherwise the muted ones (MUTE mode pads, FUNC + pads in MUTE mode, MIDI CC 94). OS 1.74 keeps no separate pattern mute.
• A note held when its track is muted is released on the next UI tick; on a unit the sound had stopped 50 and 130 ms after a CC 94 mute, its own fade included.
• Only notes are affected. CC, NRPN, aftertouch, pitch bend, program change, clock, transport and SysEx pass as stock, also for muted tracks.

Test evidence

On the author's Rytm MKII (OS 1.74, builds MM03 and MM04, USB and DIN): with MUTE MIDI IN checked, notes for a muted or soloed-out track stayed silent on the AUTO and track channels, held notes stopped 50-130 ms after a mute or solo, and 60 s floods with mutes, solos and pattern changes left nothing sounding; unchecked, the results matched stock OS 1.74 step for step. A live session behaved as expected. rytm-emu 3c4c42c covers the rest, Filter Hz and Loop Sync beside it included. See TESTING.md.