Desktop instrument

LH RESISTOR

Single-Cycle FM Synthesizer

A single-cycle FM synthesizer built for harmonic shaping and evolving motion.

Audio Unit macOS plug-in
VST® 3 macOS plug-in
Standalone macOS application
macOS 64-bit
LH RESISTOR SYNTH workspace
LH RESISTOR — SYNTH workspace

LH RESISTOR begins with a single-cycle waveform and an internal FM structure designed for direct harmonic shaping.

The resulting sound is distributed across parallel LOW, BAND and HIGH spectral layers, then animated through cyclic modulation and completed by a reorderable serial effects rack.

Signal architecture Source → SVF → Envelopes → FX → Master

A selectable single-cycle waveform forms the source of the instrument. Mod Ratio, Ratio Fine and FM Index provide direct control over harmonic structure, while Unison, Detune and phase controls extend the source beyond a single focused voice.

After the FM source, the signal is divided into parallel LOW, BAND and HIGH state-variable filter outputs. The three layers remain available simultaneously and can be shaped with independent level and envelope behaviour.

LH RESISTOR source and FM controls
Single-cycle source and FM controls
LH RESISTOR parallel LOW BAND HIGH spectral layers
Parallel LOW / BAND / HIGH spectral structure

A main LFO can be driven by a second Rate Mod LFO, allowing the speed of cyclic movement itself to change over time. Pitch, FM relationships and spectral-layer levels can be animated as independent destinations.

The synthesis engine feeds a reorderable serial effects rack. Effect instances can be added, bypassed, removed and rearranged as part of the sound-design process, with the complete chain stored as part of the sound state.

LH RESISTOR Motion section
Nested cyclic motion
LH RESISTOR reorderable serial effects rack
Reorderable serial FX Rack

Factory and User preset libraries provide a practical structure for sound development. Additional compatible single-cycle WAV folders can be registered as waveform libraries and used alongside the built-in content.

Assignable MIDI mappings allow external controllers to reach synthesis and performance parameters directly without changing the underlying sound-preset format.

LH RESISTOR preset library
Preset Library
LH RESISTOR MIDI mapping page
MIDI Control

Formats & Support

Platform
macOS
Formats
Audio Unit · VST® 3 · Standalone
Architecture
64-bit
Version
1.0.0
Design & Development
Liu Hao / 刘昊