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

Parametric spatial post-filtering utilising high-order circular harmonics with applications to underwater sound-field visualisation

Vasileios Bountourakis, Leo McCormack, Mathias Winberg, Ville Pulkki 2021 The Journal of the Acoustical Society of America

Autonomous robot twin system for room acoustic measurements

Georg Götz, Abraham Martinez Ornelas, Sebastian Schlecht, Ville Pulkki 2021 Journal of the Audio Engineering Society

Acoustic analysis and dataset of transitions between coupled rooms

Thomas McKenzie, Sebastian J. Schlecht, Ville Pulkki 2021 ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

Superhuman spatial hearing technology for ultrasonic frequencies

Ville Pulkki, Leo McCormack, Raimundo Gonzalez 2021 Scientific Reports

Spherical Maps of Acoustic Properties as Feature Vectors in Machine-Learning-Based Estimation of Acoustic Parameters

Ricardo Falcon Perez, Georg Götz, Ville Pulkki 2021 Journal of the Audio Engineering Society

Numerical simulations of near-field head-related transfer functions

Sebastian T. Prepeliţă, Javier Gómez Bolaños, Ville Pulkki, Lauri Savioja, Ravish Mehra 2020 The Journal of the Acoustical Society of America

Towards Transfer-Plausibility for Evaluating Mixed Reality Audio in Complex Scenes

Stefan Wirler, Nils Meyer-Kahlen, Sebastian Schlecht 2020 2020 AES International Conference on Audio for Virtual and Augmented Reality

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

Annett Szibor, Petteri Hyvärinen, Antti Mäkitie, Antti A. Aarnisalo 2020 Progress in Brain Research

Effects of rigid spherical scatterer on spatial audio reproduction quality

Lauros Pajunen, Archontis Politis, Markus Vaalgamaa, Stefan Strömmer, Ville Pulkki 2020 148th AES Convention
More information on our research in the Research database.
Research database
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