- Physics of and signal processing for microphone and loudspeakers arrays
- Spatial sound capture and presentation
- Non-linear ultrasonic acoustics
Check this out
Here’s an example of work that we’ve been doing in a collaboration with Facebook Reality Labs (The link will take you to YouTube):
Current Research Projects
- Spherical harmonic representations of sound source directivities (since 2019)
- 3D audio capture and rendering using spherical microphone arrays (with Facebook Reality Labs) (since 2018)
- Levitate (EC, FET Open) (since 2017)
- Psychoacoustic effects caused by feedback control (time variance) in reverberation enhancement systems
Past Research Projects
- Adaptive acoustic crosstalk cancelation using linear loudspeaker arrays (with Aarhus University and Dynaudio A/S) (2018-2019)
- Artificial Reverberation for Sound Field Synthesis (with TU Berlin, funded by DFG) (2014-2016)
Our public code is available on Github at https://github.com/AppliedAcousticsChalmers.
Members of the Audio Technology Group have contributed to the following software tools:
- This repository of spherical harmonic representations of sound source directivities
- ReTiSAR: Real-Time Spherical Microphone Renderer for binaural reproduction in Python
- SoundScape Renderer: Realtime spatial audio presentation (binaural with head-tracking, WFS, VBAP, Ambisonics, etc.)
- Sound Field Analysis toolbox for Python: Analysis, visualization, and processing of sound field data captured with spherical microphone arrays (incl. head-tracked binaural rendering)
- Acoustic hardware: This Python package provides a unified interface to several hardware platforms used in acoustic measurements, e.g. audio interfaces. It enables cross-hardware interactions with a consistent interface and simplifies scripting of advanced measurement setups. It also includes an interface to VariSphear.
… and we endorse the Sound Field Synthesis Toolbox (and many other tools, too).
Various other resources (impulse response libraries, multi-track recordings, signal processing tools, etc.) have been collected here: http://www.soundfieldsynthesis.org/other-resources.