Department of Signal Processing and Acoustics

Communication acoustics: spatial sound and psychoacoustics

Capturing, transmission, reproduction, synthesis, and perception of sound - these are the fields that interest us in the communication acoustics team
Aalto University / Communication acoustics / photo: Ville Pulkki

Our projects are gathered around spatial sound. We have developed, and are still developing, new reproduction methods for spatial sound taking into account the time-frequency-space resolution of the human hearing. These methods are applicable to multi-channel loudspeaker layouts, headphones, and binaural hearing aids. Additionally, we are currently developing new types of non-linear beam-forming algorithms.

To enable the research of perceptually optimised spatial audio methods, we have to know more about the perceptual spatial hearing mechanisms of humans. We study these mechanisms with listening tests and model the brain mechanism devoted to spatial auditory perception. In this context, we are very interested in the perception of spatially complex sound scenes and the binaural perception of timbre.

Furthermore, we research acoustical measurement techniques for spatial sound. Here, the head-related acoustics are of vital importance in spatial hearing research, and we work on new modelling and measurement tools to understand the acoustical effects near the head and in the ear canals.

For this purpose, we must also inspect proper acoustical sources in measurements. Our current topic is the suitability of laser-induced shock waves as massless point sources. They can be applied to acoustical room measurements, and the technique is currently in active development.

European Union flag

This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no 240453. The starting independent research project Technologies and Psychophysics of Spatial Sound (TEPESS) funded by European Research Council runs within the Communication acoustics team.

Latest publications

Enhancing binaural rendering of head-worn microphone arrays through the use of adaptive spatial covariance matching

Janani Fernandez, Leo Mccormack, Petteri Hyvärinen, Archontis Politis, Ville Pulkki 2022 Journal of the Acoustical Society of America

Analysis of multi-exponential and anisotropic sound energy decay

Georg Götz, Christoph Hold, Thomas McKenzie, Sebastian Schlecht, Ville Pulkki 2022

Vertical Direction Control Using Difference-Spectrum Filters in Stereophonic Loudspeaker Reproduction

Taeho Kim, Henri Pöntynen, Ville Pulkki 2022 Journal of the Audio Engineering Society

Auditory model-based estimation of the effect of head-worn devices on frontal horizontal localisation

Pedro Lladó, Petteri Hyvärinen, Ville Pulkki 2022 Acta Acustica

Predicting the Colouration between Binaural Signals

Thomas McKenzie, Cal Armstrong, Lauren Ward, Damian T. Murphy, Gavin Kearney 2022 Applied Sciences (Switzerland)

Transfer-Plausibility of Binaural Rendering with Different Real-World References

Nils Meyer-Kahlen, Sebastià Amengual Garí, Thomas McKenzie, Sebastian Schlecht, Tapio Lokki 2022

Rendering of source spread for arbitrary playback setups based on spatial covariance matching

Leo McCormack, Archontis Politis, Ville Pulkki 2021 2021 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics

Machine Learning Based Auralization of Rigid Sphere Scattering

Stefan Wirler, Sebastian J. Schlecht, Ville Pulkki 2021 2021 Immersive and 3D Audio: from Architecture to Automotive (I3DA)

Low inter-rater consistency in semantic profiles of tinnitus-like sounds rated by tinnitus patients

Annett Szibor, Petteri Hyvärinen, Antti Mäkitie, Antti A. Aarnisalo 2021 Tinnitus - An Interdisciplinary Approach Towards Individualized Treatment
More information on our research in the Research database.
Research database
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