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

Magnitude-Least-Squares Binaural Ambisonic Rendering with Phase Continuation

Christoph Hold, Nils Meyer-Kahlen, Ville Pulkki 2023

Test-retest evaluation of a notched-noise test using consumer-grade mobile audioequipment

Petteri Hyvärinen, Michal Fereczkowski, Ewen N. MacDonald 2023 INTERNATIONAL JOURNAL OF AUDIOLOGY

Effect of sound therapy on whole scalp oscillatory brain activity and distress in chronic tinnitus patients

Mie Lærkegård Jørgensen, Petteri Hyvärinen, Sueli Caporali, Torsten Dau 2023 Frontiers in Neuroscience

A database of near-field head-related transfer functions based on measurements with a laser spark source

Marton Marschall, Javier Gomez Bolanos, Sebastian Prepelita, Ville Pulkki 2023 Applied Acoustics

Spatial Reconstruction-Based Rendering of Microphone Array Room Impulse Responses

Leo McCormack, Nils Meyer-Kahlen, Archontis Politis 2023 AES: Journal of the Audio Engineering Society

Auralization of Measured Room Transitions in Virtual Reality

Thomas McKenzie, Nils Meyer-Kahlen, Christoph Hold, Sebastian J. Schlecht, Ville Pulkki 2023 AES: Journal of the Audio Engineering Society

Perceived difficulty of upwind shouting is a misconception explained by convective attenuation effect

Ville Pulkki, Rapolas Daugintis, Timo Lähivaara, Aleksi Öyry 2023 Scientific Reports

Space-domain cross-pattern coherence post-filter for speech enhancement with linear microphone arrays

Stefan Wirler, Vasileios Bountourakis, Ville Pulkki 2023 Audio Engineering Society Convention 2023, 154
More information on our research in the Research database.
Research database
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