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MURMUR v1.6.1 — Real-Time Safety & Performance

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@cbackstrom80 cbackstrom80 released this 20 Aug 21:32
· 2 commits to main since this release
v1.6.1
f083477

MURMUR 1.6.1 — Real-Time Safety & Performance

Customer-ready build for Apple Silicon Macs (M1/M2/M3/M4/M2 Ultra), macOS 13+, Logic Pro.

Install (Ben)

  1. Download MURMUR-1.6.1-macOS-arm64-full.dmg from GitHub Releases
  2. Open the DMG → double-click Install MURMUR.pkg
  3. If Gatekeeper blocks it: right-click → Open → Open
  4. Quit Logic completely, reopen
  5. Settings → Plug-in Manager → Reset & Rescan Selection
  6. Software Instrument track → AU Instruments → Murmur → MURMUR
  7. Click the preset name in the header → Preset Explorer → load a factory patch

Optional: drag MURMUR.app from the DMG to Applications to test standalone (no Logic required).

What's included

Item Path after install
Audio Unit (Logic) ~/Library/Audio/Plug-Ins/Components/MURMUR.component
Standalone app /Applications/MURMUR.app (full installer only)
VST3 ~/Library/Audio/Plug-Ins/VST3/MURMUR.vst3 (full installer only)
Factory presets (1,129) ~/Library/Application Support/MURMUR/Presets/factory/
Wavetables ~/Library/Application Support/MURMUR/Wavetables/
Design FX presets ~/Library/Application Support/MURMUR/design-fx/

What's new since 1.6.0

A behind-the-scenes real-time-safety and performance pass — no new UI, no new engines. Everything below was verified end-to-end (real before/after audio diffs, not just "tests pass").

  • Live parameter updates are now genuinely event-driven. Previously, every audio block rebuilt every operator/LFO/envelope/filter's live parameters regardless of whether anything actually changed — a real (if usually inaudible) CPU cost, worse the more voices are sounding. Automation and knob changes now only trigger work for the parameter groups that actually changed.
  • Lower average CPU load, most noticeable on patches using master-bus effects, active modulation, or granular textures — internal benchmarks measured a real ~17% reduction on the core per-voice render path and ~2-5% on full-patch rendering.
  • Fixed a real pitch-independent tuning inconsistency: the Classic engine's Triangle waveform and the Phase/Shape engine's Wavefold amount both had a subtle character that shifted slightly with project sample rate (44.1kHz vs. 48kHz vs. 96kHz) — the same patch could sound very slightly different depending on your session's sample rate. Both now render consistently across sample rates.
  • Granular engine's grain envelope now uses a precomputed lookup table instead of a live trig calculation per grain per sample — measurably cheaper with no audible difference (verified to a fraction of a millionth of full scale).

Troubleshooting

Problem Fix
Logic says "incompatible" Delete old MURMUR.component, reinstall 1.6.1 pkg, rescan
Blank plugin window Reinstall pkg (content missing); try Standalone app first
A saved project sounds slightly different after updating Only affects Triangle/Wavefold-heavy patches rendered at a non-48kHz sample rate — the new render is the more correct one; if you need the exact previous character, contact support and mention this release note.
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