IVLS Framework Documentation¶

IVLS — Interactive Voice Logic System — is a framework for building virtual instruments in Kontakt. It extends KSP with a modular, node-based architecture where each piece of instrument behavior lives in its own self-contained block, and notes flow through a pipeline of these blocks from input to playback.

Guide¶

A progressive curriculum for learning IVLS from scratch. Start here.

Unit	Topics
Environment	Set up Sublime, the compiler, and the plugin
Introduction	Events, nodes, product assembly, callbacks
Playback System	Voices, flows, playing sounds, keymaps, routing, pedals
Engine Parameters	Engine boxes, multi-dimensional data, serialization
GUI	Multiplex, UI routines, UI callbacks
Voice Mechanics	vo_field, voice creation, the voice tree, runtimes, ownership
Modulation	VMC, modbits, fades
Common Features	Round robins, legato, portamento, browsers, purge, console
Metaprogramming	Macros, Jinja, embedded Python
Advanced Systems	Node inheritance, custom callbacks, type system, data structures, cluster system
Production Systems	TACT, Modrix, lookahead, project structure

Modules¶

What each system is, why it exists, and how its pieces fit together.

Core: Nodes · Voices · Flows · Keymaps · VMC

Application: Engine Box · UI Routines · UI Callbacks · Purge · Serialization · Console

STL Nodes: PlayEvent · Pedals · Round Robins · Legato · Portamento · Step Arp · Browsers · Fades

Advanced: TACT · Adaptive Release · Lookahead · Modrix · Type System · Data Structures

How-To Guides¶

Task-oriented recipes: How-To Index

Add Legato · Add Round Robins · Add a Browser · Add Portamento · Add an Arpeggiator · Set Up a Keymap · Add Modrix · Build a TACT Product · Adaptive Releases · Multi-Layer Instrument · Python Product Data · Project Structure

API Reference¶

Standard Library — Auto-generated API surfaces for every function, macro, and node in the SDK.

Language Reference — Every syntax construct in IVLS/sKSP.

Source — Core framework internals.