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.

Group members

Ville Pulkki

Ville Pulkki

Department of Signal Processing and Acoustics
Professor (Associate Professor)

Juhani Paasonen

Department of Signal Processing and Acoustics
Doctoral Candidate

Leo McCormack

Department of Signal Processing and Acoustics
Doctoral Candidate
Georg Götz

Georg Götz

Department of Signal Processing and Acoustics
Research Assistant

Janani Fernandez

Department of Signal Processing and Acoustics
Doctoral Candidate

Taeho Kim

Department of Signal Processing and Acoustics
Doctoral Candidate

Vasileios Bountourakis

Department of Signal Processing and Acoustics
Doctoral Candidate

Christoph Hold

Department of Signal Processing and Acoustics
Doctoral Candidate

Onni Hyvärinen

Department of Signal Processing and Acoustics
Postdoctoral Researcher

Latest publications

Department of Signal Processing and Acoustics, Communication Acoustics: Spatial Sound and Psychoacoustics

Blind Room Volume Estimation from Single-channel Noisy Speech

Publishing year: 2019
Communication Acoustics: Spatial Sound and Psychoacoustics, Department of Signal Processing and Acoustics

Sharpening of Angular Spectra Based on a Directional Re-assignment Approach for Ambisonic Sound-field Visualisation

Publishing year: 2019
Department of Signal Processing and Acoustics, Communication Acoustics: Spatial Sound and Psychoacoustics

A Sparsity Measure for Echo Density Growth in General Environments

Publishing year: 2019
Department of Signal Processing and Acoustics, Communication Acoustics: Spatial Sound and Psychoacoustics

Machine-learning-based estimation and rendering of scattering in virtual reality

Publishing year: 2019 Journal of the Acoustical Society of America
Department of Signal Processing and Acoustics, Communication Acoustics: Spatial Sound and Psychoacoustics

SPARTA & COMPASS: Real-Time Implementations of Linear and Parametric Spatial Audio Reproduction and Processing Methods

Publishing year: 2019
Department of Signal Processing and Acoustics, Communication Acoustics: Spatial Sound and Psychoacoustics

Perception of vertically separated sound sources in the median plane

Publishing year: 2019
Department of Signal Processing and Acoustics, Communication Acoustics: Spatial Sound and Psychoacoustics

Improving Binaural Ambisonics Decoding by Spherical Harmonics Domain Tapering and Coloration Compensation

Publishing year: 2019
Department of Signal Processing and Acoustics, Communication Acoustics: Spatial Sound and Psychoacoustics

Musical analogues of mathematical concepts

Publishing year: 2018
Department of Signal Processing and Acoustics, Communication Acoustics: Spatial Sound and Psychoacoustics

The effect of the inner-hair-cell mediated transduction on the shape of neural tuning curves

Publishing year: 2018
Department of Signal Processing and Acoustics, Communication Acoustics: Spatial Sound and Psychoacoustics

COMPASS: Coding and Multidirectional Parameterization of Ambisonic Sound Scenes

Publishing year: 2018
More information on our research in the Research database.
Research database
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