Audio Impressions
EST · 2009
Studio
Orchestral Art LiveDivisiIR StudioIR PlayerConductorControllersThe RoomAIPGLooper
STUDIO INDEX Nine tools. One protocol.
MIDI 2.0 · UMP NATIVE VST3 / AU / AAX

Real-time virtual Divisi instruments. Performance utilities. Patented audio DSP.

↓ SCROLL · 09 PRODUCTS

Standalone tools, built to chain.

LOS ANGELES · CA v.2026
02 About

Nine tools that work
on their own,
and together.

On the work

We build samplers, MIDI utilities, and audio effects. Each ships as a standalone product, but they're designed to chain together. A single keyboard can drive a full string section without keyswitches, layered tracks, or workarounds.

MIDI 2.0 is what makes that practical, and we use it natively throughout.

09
PRODUCTS
2.0
MIDI PROTOCOL
3
PLUGIN FORMATS
07
PATENTS
CHAIN
INPUT
Keyboard
MIDI 1
⟶
ENCODE
Conductor
UMP attrs
⟶
SPLIT
Divisi
N stems
⟶
VOICE
Orchestral Art Live
tree playback
⟶
SHAPE
IR Player
space + tone
⟶
OUT
Output
audio
03 The Products

Nine tools,
one continuous chain.

Each tool ships as a standalone product and is built to compose with the others. In order of priority to a working studio:

Sampler

Orchestral Art Live

MIDI 2.0 sampler organized as a tree.

MIDI 2.0UMPVST3 / AU / AAXmacOS · Windows
Orchestral Art Live interface
ORCHESTRAL ART LIVE

A sample playback engine built around a hierarchical tree of instruments, articulations and round-robin alternates. Every leaf is addressable from a UMP message, so articulation switching happens at the note level, not the preset level.

Hierarchical Tree
Instrument → Articulation → Alternate, addressable down to the leaf.
MIDI 2.0 / UMP
Native UMP endpoints with per-note attribute decoding.
Attribute Routing
Articulations resolve from orchestral attribute messages.
Polyphonic Legato
Per-voice glide with independent transition parameters.
Core libraries
Divisi
Strings · Winds · Brass · Big Band · Choir
Percussion
Orchestral · Latin · World · Drum Kits
Guitars
Acoustic · Electric · Bass
Keyboards
Acoustic · Electric · Pipe Organs
Sound
Orchestral FX · Sound Design
MIDI Insert

Divisi

Polyphonic note splitting with per-stem detail.

MIDI 2.0PolyphonicPer-stem FX
Divisi interface
DIVISI

Splits incoming polyphony into named stems and routes each through a separate MIDI 2.0 UMP endpoint. Per-stem pitch spread, time spread, delay and transpose are available where you need them.

Stem Routing
Add or remove stems on the fly.
Humanizer
Independent pitch, time and delay spread per stem.
Transpose
Per-stem octave and semitone offset with foldback.
UMP Output
Drives any MIDI 2.0 listener from one keyboard.
IR Authoring

IR Studio

Deconvolve impulse responses into editable filters.

DeconvolutionParametricIR · IIR
IR Studio interface
IR STUDIO

A deconvolution workbench. Convert any impulse response into a sparse set of editable parametric filters, refine their shape, then export back as IR or IIR at any order.

Deconvolution
Generate and refine peak filters from a target IR.
Editable Bands
Drag, tune and Q each band against a live spectrum.
IR ⇄ IIR
Round-trip between convolution and biquad domains.
High Sample Rate
Native processing up to 96 kHz.
Audio Effect

IR Player

IR / IIR effect plugin with parametric overlay.

VST3 / AU / AAXIR + IIR.coef · .ireq
IR Player interface
IR PLAYER
IR Player parametric view
PARAMETRIC

Loads any .coef impulse and reshapes its character through a parametric overlay. The source IR is shown underneath as you sculpt. Works directly with IR Studio exports and supports mute IRs as a first-class case.

Library
Drop-folder loading with persistent preset banks.
Parametric Overlay
Add bands on top of any IR; save as .ireq.
IR + Mute
First-class support for mute curves.
Mix / Gain
Dry blend and trim with sample-accurate metering.
MIDI Insert

Conductor

MIDI 1 → MIDI 2.0 UMP translator.

MIDI 1 → 2.0UMPArticulations
Conductor interface
CONDUCTOR

Maps incoming MIDI 1 traffic into MIDI 2.0 note-on attributes so existing hardware can drive attribute-aware instruments. Articulations are organized into switchable banks with searchable libraries.

Articulation Banks
Eight switchable banks of articulations.
Searchable Library
Sustained, short, tremolo, expression, effects, custom.
Symbol Notation
Standard musical glyphs alongside text labels.
Attribute Encoding
Written into UMP note-on; no keyswitches.
MIDI Insert

Controllers

Customizable MIDI control surface.

MIDI InsertSliders · JoysticksRecallable
Controllers interface
CONTROLLERS

A MIDI insert built from composable panels: sliders, buttons, joysticks, each assignable to any MIDI output. Layouts are saved and recalled per session.

Composable Panels
Mix sliders, buttons and joysticks on one surface.
Assignable Output
Route any control to CC, NRPN or UMP destinations.
Pages
Stack pages and recall whole layouts.
Macros
Build named performance presets.
Reverb / Server-Client

The Room

Spatial reverb with proximity mics and bleed.

SpatialServer · ClientDecca Tree
The Room interface
THE ROOM

A matrix-based spatial reverb with positionable sources, proximity mics and inter-source bleed. Runs as a server-client setup so multiple discrete DAW tracks share one room while keeping their own placement, distance and mic config.

Spatial Matrix
Positionable sources in a shared 3D room.
Proximity + Bleed
Spot mics with adjustable bleed between sources.
Server / Client
Discrete DAW tracks contribute to one room instance.
Mic Configs
Decca tree, mixer or custom mic placements.
MIDI Generator

AIPG

Multi-track sequencer and arpeggiator.

SequencerArpeggiatorMulti-track
AIPG interface
AIPG

A custom sequencer and arpeggiator with per-track behaviour, swing, octave range and chord correction. Eight banks of sixteen sequences each, with pattern generation and arpeggiation modes that can run side-by-side.

Pattern + Arp
Pattern generator and arpeggiator modes per track.
Banks · Sequences
8 banks × 16 sequences with NRPN recall.
Per-track Swing
Bias, amount and randomization per voice.
Chord Tools
Correction, multiply and pattern lock behaviours.
Audio Editor

Looper

Sample library workbench: cut, detect, loop, repair.

Sample PrepAuto-cutPitch · MIDILoop · Repair
Looper interface
LOOPER

A complete sample-library helper. Auto-cuts long takes into per-note files, pitch-detects each cut into MIDI note numbers for instant mapping, then provides a loop-point engine and time-preserved gap fills for the harder seams.

Auto-cut
Slice long recordings into per-note samples by transient and silence detection.
Pitch → MIDI
Detect the fundamental of each cut and assign a MIDI note number automatically.
Looper
Find robust loop points; refine manually with crossfade and zero-cross tools.
Gap Fill / Repair
Time-preserved pitch fills for missing regions, plus general audio editing.
04 Patents

The patent
record.

Granted and pending filings covering the technology behind every Audio Impressions product. PDF: open or download.

GRANTED PDF ↓
US 10,319,353 B2
Method for audio sample playback using mapped impulse responses
GRANTED PDF ↓
US 9,418,641 B2
Swap divisi process
GRANTED PDF ↓
US 7,728,213 B2
System and method for dynamic note assignment for musical synthesizers
GRANTED PDF ↓
US 7,702,116 B2
Microphone bleed simulator
GRANTED PDF ↓
EP 2 122 606 B1
Real-time divisi with path priority, defined note ranges and forced octave transposition
GRANTED PDF ↓
EP 2 015 855 B1
System and method for dynamic note assignment for musical synthesizers
PENDING PDF ↓
63/297,305
Implementation of IIR filters to maximize CPU and memory usage
05 Founder

Christopher L.
Stone.

FOUNDER · COMPOSER

Award-winning composer for film, television and videogames.

A career spent in front of live orchestras, listening to how players bow, breathe and articulate, shapes the patented processes inside every Audio Impressions product.

Full credits on IMDb →

FILMS20+
TV SCORES2,000+
ASCAP AWARDS6×
06 Contact

Get in touch.

chris@audioimpressions.com