About

This repository contains a reference implementation of the Coding and Multi-Parameterisation of Ambisonic Sound Scenes (COMPASS) method, as presented in publication [1].

Dependencies

This Matlab code is reliant on the following libraries:

• alias-free STFT
• Higher-Order-Ambisonics
• Spherical-Harmonic-Transform
• Vector-Base-Amplitude-Panning

Precompiled mex files of afSTFT are provided in the ./ext-lib/afSTFT directory of the repo. Please download the rest of the dependencies and add them to Matlab's search path.

Example

The repository contains a TEST_COMPASS.m test script, which also serves as example usage of the reference implementation.

Contributing

Suggestions and contributions to the code are both welcomed and encouraged. If you encounter any issues, please feel free to contact the developers, open a "github" issue, or submit pull requests.

Developers

The Matlab code is developed primarily by Archontis Politis, with contributions from Leo McCormack. The developers also maintain a free VST audio-plugin suite of the COMPASS method. More information regarding the plug-ins can be found here.

References

• [1] Politis, A., Tervo S., and Pulkki, V. (2018) COMPASS: Coding and Multidirectional Parameterization of Ambisonic Sound Scenes. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).

License

This software is provided under the terms of the GNU GPLv2 License.

For full licensing terms see LICENSE.