Sample Playback Rate for Elektron Analog Rytm

FIN's knob becomes RATE, sound by sound: pure sample speed down to a stop and into reverse, like the Octatrack's RATE on PTCH. Tap the knob to switch.

Module version 0.1.1-experimental. Base firmware: 1.74.

About this module

Sample Playback Rate gives a sample a pure speed control: no time stretch, just the sample played faster or slower, down to a stop and on into reverse. Switch it on for a sound in SOUND SETTINGS with SMP RATE, and FIN's knob on the SAMPLE page reads RATE, +63 to -64: +63 plays at normal speed, 0 stops, -64 plays backward at normal speed, in a straight line between them, as the Octatrack's RATE with its setting on PTCH. Stock's pitch stops at a quarter of the speed. A trig below 0 starts from END. The setting saves with the sound and is off by default, so a sound plays stock until you ask.

• Slow a sample to a dead stop and run it backward from one knob.
• Exactly the Octatrack's range: +63 is 1x, 0 stops, -64 is -1x.
• Per sound, saved with it, off by default: every other sound stays stock.
• Takes parameter locks: one trig backward from END, the next forward.
• Works beside LOP PIPO from Pipo Loop, without needing it.

How to use it

1. Put a long sample on a track, with LOP ON. Press SMPL and tap encoder B: FIN's knob reads RATE.
2. Play the pad. Turn RATE down from +63: the sample slows like a stopping turntable and rests at 0.
3. Keep turning below 0: it runs backward, smoothly through the stop. A new trig now starts from END.
4. Hold a trig in GRID RECORDING and turn RATE to lock it on that step: a trig at -63 plays backward from END, and the next trig plays forward again.

Controls

SMP RATE

SOUND SETTINGS, under SMP:. OFF: stock. ON: FIN is RATE on this sound. Saved with the sound. Switching on takes FIN +0 to RATE +63; switching off takes RATE +63 to FIN +0; other values stay.

Tap of encoder B

SAMPLE page. A short press with no turn turns SMP RATE over. Not with a trig, FUNC or NO held, or a pad held in scene or performance mode, and not in running live recording.

RATE

SAMPLE page, encoder B, on a sound with SMP RATE on. +63 to -64: speed scales by |RATE| / 64, backward below 0, and +63 is exactly 1x. TUN still multiplies it. Locks and LFOs reach it as FIN.

Compatibility notes

• Built for OS 1.74 only, with core-ar2 0.7.
• Run on a unit by the author as SP03 to SP13 (TESTING.md); two voices together, performance and scene locks and sound browser load are from rytm-emu or not run there.
• Saving to and loading from SOUND MANAGER is not confirmed on a unit: stored sounds often gave ERROR there, RATE or not, and one that loaded came back with SMP RATE clear (README).
• RATE never goes above 1x by itself; TUN does, to stock's ceiling of about 4x.
• On stock OS a saved sound plays FIN as FIN: RATE +63 is about a semitone sharp.
• With LOP OFF, once the sample has played out, changing RATE does not bring it back: trig again.
• A change of direction on a looping voice waits until it is 32 frames clear of STA and END; a trig does not wait.
• LFO destination lists and other screens still say FIN.
• Sound locks, scene locks and performance locks have not been run.

Test evidence

rytm-emu on OS 1.74, 23,777-frame ramp: rate word exact at every RATE tried, trig below 0 starts from END, row off sample-identical to the core alone, with Pipo Loop no clicks at any speed or across flips and sweeps; the tap's cases. Hardware, as reported by the author: SP03 to SP13, and LF01 (0.1.1 in a 16-module set: RATE works; idle block 72.9 % -> 71.1 % with two other modules' fixes) (TESTING.md).