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Tone+FX 3.5p - macro pages, performance pass, flanger & microtiming fixes

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@DigiAlchemydsp DigiAlchemydsp released this 14 Oct 02:29
· 15 commits to master since this release
v3.5p
51d2478

Tone+FX 3.5p — macro pages, a performance pass, flanger & microtiming fixes

An eleven-page master FX suite for the Digitone mk1 — RING · FOLD · TILT ·
CRUSH · PITCH · STEREO · PERFORM · WASH · RADIO · DESTROY · SPACE — plus the
output meter and the animated TONE+FX boot splash. Everything ships as one
elemod.

Install

One file is the whole suite: tonefx-3.5p.elemod bundles the boot splash
plus digictl and the FX mods into a single format-2 mod, so it combines
with your other mods. It does not include the core: install
core-dn1-2.0a.elemod (required; elekloader provides it) plus anything else you
use.

New in 3.5p

  • Four macro pages — each is one vertical slider on the right (A = on/off,
    B–H = amount) with a per-page animated graphic on the left:
    • WASH — wobble (WAVE WOB) + sample-rate reduction (CRUSH SR) + an EQ tilt.
    • RADIO — a deep band cut (EQ low/high) + TRSH fold drive + CRUSH.
    • DESTROY — fold + bit-reduction + ring modulator.
    • SPACE — WAVE stereo width.
  • WAVE on/off is split (digiwave_on for PITCH, digiwave_son for STEREO),
    so the two groups toggle independently.
  • Per-pattern store is now block 1 "DGX1" v10 (28 parameters) plus a
    second block "DGX2" v1 (the macros): every page and every macro follows a
    pattern switch and travels with a project save.
  • OFF message box: any FX or macro page whose section is switched off draws
    a small framed OFF box, so a bypassed page is unmistakable.
  • Redraw gating: animated pages redraw at ~10 Hz and static ones at ~4 Hz;
    leaving a page stops its redraw.

Fixes

  • Flanger/pitch link: the FLAN, WOB and SHFT modes shared one delay line and
    the flanger wrote its feedback into it, so switching the flanger off left
    residue that distorted the PITCH block. FLAN now has its own delay line;
    the two can no longer interfere.
  • Flanger never truly bypassed: the FLAN mix ramp stored the target instead
    of the ramped value, so switching it off restarted at full mix every block — a
    per-block flanger buzz. Fixed; FLAN now bypasses cleanly.
  • MIDI-track microtiming / volume: the key and encoder handlers could stay
    armed after the master view was closed, so in the sequencer "hold a trig +
    LEFT/RIGHT" did not nudge the microtiming and encoder turns could leak. They
    now disarm the moment the master view closes.

Performance

A measured performance pass (friendly to busy patterns): the page graphics draw
straight to the framebuffer instead of one firmware call per pixel; the output
meter only scans while its page is up; block-constant branches in CRUSH/FOLD are
hoisted; and the per-pattern store only fully compares every few UI ticks. The
output ceiling (soft limiter) still runs on every block.

Tested

  • Compiles clean (.run 27475, .bss 19446, imports nothing); links with the
    core (RAM ~47.5 KB, flash spare ~1.68 MB).
  • Emulator (dn1-3.5p): boots, settles, dsp_running=2; all eleven pages
    present (kinds=[16,15,17,0,1,2,3,4,5,6,7,8,9,10]); the flanger/pitch lines
    verified independent; the per-pattern store round-trips.
  • Hardware: the 3.2 line was stress-tested on two Digitone mk1 units; 3.5p is
    a new build — please report anything you find.

Known issues

  • PAGE can still jump some FX levels (the stock-event store guard does not
    cover every path).
  • PITCH can fire on a note-off from a PHASER trig.
  • SHFT quality: the pitch shifter is deliberately lightweight; its grain
    history is shorter in 3.5p.
  • PERFORM trig LEDs do not light yet.

The full, current list is in the README's "Known bugs / future fixes".

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