SPatial Audio Real-Time Applications (SPARTA). A collection of VST audio plug-ins for spatial audio production, reproduction and visualisation.

This repository contains the following VST plug-ins:

• AmbiBIN - A binaural ambisonic decoder (up to 7th order) with a built-in SOFA loader and head-tracking support via OSC messages.
• AmbiDEC - A frequency-dependent loudspeaker ambisonic decoder (up to 7th order) with user specifiable loudspeaker directions (up to 64), which may be optionally imported via JSON configuration files. It includes AllRAD/EPAD/SAD/MMD decoding methods. The loudspeaker signals may also be binauralised for headphone playback.
• AmbiDRC - A frequency-dependent dynamic range compressor for ambisonic signals (up to 7th order).
• AmbiENC - An ambisonic encoder/panner (up to 7th order), with support for up to 64 input channels; the directions for which may also be imported via JSON configuration files.
• Array2SH - A microphone array spatial encoder (up to 7th order), with presets for several commercially available A-format and higher-order microphone arrays. The plug-in can also present objective evaluation metrics for the currently selected configuration.
• Binauraliser - A binaural panner (up to 64 input channels) with a built-in SOFA loader and head-tracking support via OSC messages.
• DirASS - A sound-field visualiser based on re-assigning the energy of beamformers. This re-assigment is based on DoA estimates extracted from "spatially-constrained" regions, which are centred around each beamformer look-direction.
• Panner - A frequency-dependent 3-D panner using the VBAP method (up to 64 inputs and outputs).
• PowerMap - A sound-field visualisation plug-in based on ambisonic signals as input (up to 7th order), with PWD/MVDR/MUSIC/Min-Norm options.
• Rotator - A flexible ambisonic rotator (up to 7th order) with head-tracking support via OSC messages.
• SLDoA - A frequency-dependent sound-field visualiser (up to 7th order), based on depicting the direction-of-arrival (DoA) estimates derived from spatially localised active-intensity vectors. The low frequency estimates are shown with blue icons, mid-frequencies with green, and high-frequencies with red.

These instructions will help you compile the individual VST audio plug-ins. Alternatively, they can be downloaded from here:

• Pre-built - for Windows (64-bit) and Mac OSX (10.10 or higher)

To compile the plugins yourself, the following SDKs and frameworks must be placed in the 'SDKs' folder like so

SDKs/modules
SDKs/Spatial_Audio_Framework
SDKs/VST2_SDK

And can be obtained from:

• modules (JUCE) - For audio plug-in wrappers and the GUIs
• Spatial_Audio_Framework - For the internal code used by the plug-ins
• VST2_SDK - The VST2 SDK (found in vstsdk3610_11_06_2018_build_37 or older)

You must also install a custom Intel MKL .dll/.dylib in a system path folder. More details on this can be found here. However, Mac users may elect to remove the "SAF_USE_INTEL_MKL" flag in the global pre-precessor definitions, in order to get around this requirement; albeit, at the expense of a reduction in performance.

For each individual plug-in, simply open the Visual Studio (2015/2017) or X-code project file and build a release version

audio_plugins/_SPARTA_X_/make/

To generate project files for other IDEs or Linux makefiles, you can open and configure the included .jucer files with JUCE's Projucer App accordingly.

• Leo McCormack - C/C++ programmer and DSP researcher (contact: [email protected])
• Symeon Delikaris-Manias - DSP researcher
• Archontis Politis - DSP researcher
• Ville Pulkki - DSP researcher

This project is licensed under the GPLv3 License - see the LICENSE file for details