SPAT Devices by Music Unit

Credits
SPAT devices development & spatial music mixing: Manuel Poletti and Music Unit team: CarmenAlexandre, Martin Antiphon, Jérôme Boivin, Alexandre Chaigne, Julien Chirol, Pierre Luzy.
The SPAT devices were developed in close collaboration with the Acoustic and Cognitive Spaces
research team at IRCAM: Olivier Warusfel, Markus Noisternig, Thibaut Carpentier, Benoît Alary,Isabelle Viaud-Delmon.

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SPAT is a bundle of Max For Live devices powered by IRCAM's Spatialisateur soundprocessor and developed by Manuel Poletti at Music Unit, from the Spat Max librarydeveloped by the Acoustic and Cognitive Spaces team at IRCAM. The bundle is proposed
as one sole complete pack or as two separate packs - one multichannel pack and one
stereo pack.

Spat (or Spatialisateur in French) is a real-time spatial audio processor that allows
composers, sound artists, performers, and sound engineers to control the localization ofsound sources in 3D auditory spaces. In addition, Spat provides a powerful reverberationengine that can be applied to real and virtual auditory spaces. The processor receives
sounds from instrumental or synthetic sources, adds spatialization e ects in real-time,and outputs signals for reproduction on an electroacoustic system (loudspeakers orheadphones).
Its modular signal processing architecture and design are guided by computationale ciency and con gurability considerations. This allows, in particular, straightforward
adaptation to various multichannel output formats and reproduction setups, overloudspeakers or headphones, while the control interface provides direct access toperceptually relevant parameters for specifying distance and reverberation e ects,
irrespective of the chosen reproduction format.
Another original feature of Spat is its room e ect control interface relying on perceptive
criteria. This allows the user to intuitively specify the characteristics of a speci c room
without having to use an acoustic or architectural vocabulary.
The SPAT devices collection from Music Unit aims to bring to the Live community aunique audio technology dedicated to spatial audio, invented at IRCAM music research
institute and developed for three decades.

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PACK 1: SPAT Multichannel devices
This pack is dedicated to artists, producers and sound engineers who use a multichannelsound diffusion system in their studio or venue. The devices can feed sound systems
including up to 32 satellite speakers. The pack contains three spatial audio processing
devices. Each device includes many popular speakers setups ready to use - from simple
quadriphonia to 3D Dolby Atmos con gurations -, which can be selected via a simple
popup menu. An additional Speaker Editor device allows the customization of standard
speaker setups.
SPAT Spatial MC ("MC" stands for "multichannel")
The SPAT Spatial MC device is a multichannel spatial audio processor that allows thelocalization of a stereo sound source in a 2D or 3D auditory space, and includes a highquality virtual room processor.
The localization of the sound source can be optimized according to the type of input
sound - from solo instrument to eld recording - thanks to di erent panning techniquessuch as "VBAP" (for "Vector Based Amplitude Panning"), "KNN" (for "K NearestNeighbour") and "HOA" (for High Order Ambisonics). The sound source's position andradiation can be graphically manipulated in a oating window called "Panner".

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SPAT Room MC ("MC" stands for "multichannel")
The SPAT Room MC device is a multichannel standalone version of the virtual room
processor that powers the SPAT Spatial MC device, with more detailed settings for eachsection of the reverberator.
The device includes the same speakers con gurations (5.0, 7.0, 7.0.4...) as found in theSPAT Spatial MC device, and can be used just like a classic reverberator - typicallyavailable from an auxiliary Return track, for a global reverberation applied to a mix.

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SPAT Multiverb MC ("MC" stands for "multichannel")
The SPAT Multiverb MC device is a multi-band version of the virtual room processor thatpowers the SPAT Spatial MC and SPAT Room MC devices. The main difference with theSPAT Room MC device is the posiibility to adjust the reverberation decay time of up to 30
frequency bands separately, thus allowing the design of custom reverb sounds.
The device includes the same speakers con gurations (5.0, 7.0, 7.0.4...) as found in theSPAT Spatial MC and SPAT Room MC devices, and can be used just like a classic
reverberator - typically available from an auxiliary Return track, for a global reverberation
applied to a mix.

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SPAT Speaker Editor
The SPAT Speaker Editor device is a utility that allows the customization of standard
speaker con gurations and the creation of new con gurations. This device does notproduce sound but can at any time be inserted on any track of a Live session . It can beused to easily share speaker setups with the SPAT Spatial MC, SPAT Room MC and SPAT
Multiverb MC devices in a same Live session.

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PACK 2: SPAT Stereo devices
This pack is dedicated to artists, producers and sound engineers who don't use a
multichannel sound diffusion system in their studio or venue, but still wish to integratequality spatialization tools in their stereo productions. The pack contains the same threespatial audio processing devices as in the SPAT Multichannel pack, available here as
stereo-only versions.
SPAT Spatial
The SPAT Spatial device is a stereo spatial audio processor that proposes a convincing
localization of a stereo sound source in a 2D or 3D stereophonic auditory space, andincludes a high quality virtual room processor.
The device includes advanced stereo panning techniques ready to use: Angular (classicintensity panning), XY, AB and MS (simulate the recording of XY-coincident, AB-ORTF andMS microphones), Binaural (3D audio over headphones) and Transaural (3D binaural
audio over two speakers).

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SPAT RoomThe SPAT Room device is a stereo standalone version of the virtual room processor thatpowers the SPAT Spatial device, with more detailed settings for each section of thereverberator.
The device can be used just like a classic reverberator - typically available from an
auxiliary Return track, for a global reverberation applied to a mix.

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SPAT Multiverb
The SPAT Multiverb device is a multi-band version of the virtual room processor thatpowers the SPAT Spatial and SPAT Room devices. The main difference with the SPAT
Room device is the possibility to adjust the reverberation decay time of up to 30 frequency
bands separately, thus allowing the design of custom reverb sounds.
The device can be used just like a classic reverberator - typically available from an
auxiliary Return track, for a global reverberation applied to a mix.

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