Jens Ahrens

Professor at Applied Acoustics

Jens Ahrens is Associate Professor in the Division of Applied Acoustics and leader of the Audio Technology research group. His main research interests revolve around the domain of spatial sound. In particular, he works on technical aspects of spatial sound capture and auralization using loudspeaker and microphone arrays as well as on the psychoacoustics that come with it. Plausible or even authentic auralization of sound scenes is an important tool for investigating the effects of sound on human beings covering all the range from urban noise to music performance.

Source: chalmers.se
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Showing 71 publications

2024

Perceived Quality of Binaural Rendering From Baffled Microphone Arrays Evaluated Without an Explicit Reference

Hannes Helmholz, Jeffrey Crukley, Sebastia V. Amengual Gari et al
Journal of The Audio Engineering Society. Vol. 72 (10), p. 691-704
Journal article
2024

Direction of Arrival Estimation Using the Rotating Equatorial Microphone

Jeremy Lawrence, Jens Ahrens, Nils Peters
Frontiers in Signal Processing. Vol. 4
Journal article
2024

Anwendungen der Virtuellen Akustik

Annika Neidhardt, Jens Ahrens, Christoph Pörschmann
Akustik Journal. Vol. 24 (1)
Magazine article
2024

Customized and high-performing acoustic levitators for contact-free experiments

Smaragda Maria Argyri, Carl Andersson, Nicolas Paillet et al
Journal of Science: Advanced Materials and Devices. Vol. 9 (3)
Journal article
2024

Blind Estimation of Spatial Room Impulse Responses Using a Pseudo Reference Signal

Thomas Deppisch, Jens Ahrens, Sebastià V. Amengual Garí et al
2024 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops, ICASSPW 2024 - Proceedings, p. 470-474
Paper in proceeding
2024

VICMus: Variance-Invariance-Covariance Regularization for Music Representation Learning

Sebastian Löf, Cody Hesse, Carl Thomé et al
2024 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops, ICASSPW 2024 - Proceedings, p. 475-479
Paper in proceeding
2024

Spatial Room Impulse Response Identification from Rotating Equatorial Microphone Arrays

Thomas Deppisch, Jens Ahrens, Sebastia V. Amengual Gari et al
European Signal Processing Conference, p. 116-120
Paper in proceeding
2023

A Software Tool For Auralization of Simulated Sound Fields

Jens Ahrens
Proceedings of the Institute of Acoustics. Vol. 45
Paper in proceeding
2023

End-to-End Magnitude Least Squares Binaural Rendering for Equatorial Microphone Arrays

Hannes Helmholz, Thomas Deppisch, Jens Ahrens
Fortschritte der Akustik - DAGA 2023, p. 1679-1682
Paper in proceeding
2023

Perceptual Significance of Tone-Dependent Directivity Patterns of Musical Instruments

Andrea Corcuera Marruffo, Vasileios Chatziioannou, Jens Ahrens
AES: Journal of the Audio Engineering Society. Vol. 71, p. 293-302
Journal article
2023

Case Study of Equipping a High-Fidelity 360 Camera with a 4th-Order Equatorial Ambisonic Microphone Array

Jens Ahrens, Karolina Jaruszewska
AES Europe 2023: 154th Audio Engineering Society Convention
Paper in proceeding
2023

Perceptual Detection Thresholds for Alterations of the Azimuth of Early Room Reflections

Felicitas Bederna, Leon Müller, Jens Ahrens
Tagungsband DAGA 2023 - 49. Jahrestagung für Akustik, p. 216-219
Paper in proceeding
2023

Direct and Residual Subspace Decomposition of Spatial Room Impulse Responses

Thomas Deppisch, Sebastià V. Amengual Garí, Paul Calamia et al
IEEE/ACM Transactions on Audio Speech and Language Processing. Vol. 31, p. 927-942
Journal article
2022

Perceptual Differences for Modifications of the Elevation of Early Room Reflections

Leon Müller, Jens Ahrens
Proceedings of the AES International Conference. Vol. 2022-August, p. 20-29
Paper in proceeding
2022

Perceptual Evaluation of Spatial Room Impulse Response Extrapolation by Direct and Residual Subspace Decomposition

Thomas Deppisch, Sebastià V. Amengual Garí, Paul Calamia et al
Proceedings of the AES International Conference. Vol. 2022-August, p. 122-131
Paper in proceeding
2022

Comparison of Position Estimation Methods for the Rotating Equatorial Microphone

Jeremy Lawrence, Jens Ahrens, Nils Peters
International Workshop on Acoustic Signal Enhancement, IWAENC 2022 - Proceedings
Paper in proceeding
2022

Perceptual detection thresholds for numerical dispersion in binaural auralizations of two acoustically different rooms

Julie Meyer, Jens Ahrens, Tapio Lokki
Journal of the Acoustical Society of America. Vol. 152 (4), p. 2266-2276
Journal article
2022

Data-based spatial audio processing

Maximo Cobos, Jens Ahrens, Konrad Kowalczyk et al
Eurasip Journal on Audio, Speech, and Music Processing. Vol. 2022 (1)
Other text in scientific journal
2022

An overview of machine learning and other data-based methods for spatial audio capture, processing, and reproduction

Maximo Cobos, Jens Ahrens, Konrad Kowalczyk et al
Eurasip Journal on Audio, Speech, and Music Processing. Vol. 2022 (10)
Review article
2022

Spherical Harmonic Decomposition of a Sound Field Using Microphones on a Circumferential Contour Around a Non-Spherical Baffle

Jens Ahrens, Hannes Helmholz, David Lou Alon et al
IEEE/ACM Transactions on Speech and Language Processing. Vol. 30, p. 3110-3119
Journal article
2022

Evaluation of Non-Spherical Scattering Bodies for Ambisonic Microphone Arrays

Jens Ahrens, Ziyi Hu
Proceedings of the AES International Conference. Vol. 2022-August, p. 58-66
Paper in proceeding
2021

End-to-End Magnitude Least Squares Binaural Rendering of Spherical Microphone Array Signals

Thomas Deppisch, Hannes Helmholz, Jens Ahrens
2021 Immersive and 3D Audio: From Architecture to Automotive, I3DA 2021
Paper in proceeding
2021

Spherical harmonic decomposition of a sound field based on observations along the equator of a rigid spherical scatterer

Jens Ahrens, Hannes Helmholz, David Lou Alon et al
Journal of the Acoustical Society of America. Vol. 150 (2), p. 805-815
Journal article
2021

Spatial Subtraction of Reflections from Room Impulse Responses Measured With a Spherical Microphone Array

Thomas Deppisch, Jens Ahrens, Sebastià V. Amengual Garí et al
IEEE Workshop on Applications of Signal Processing to Audio and Acoustics. Vol. 2021-October, p. 346-350
Paper in proceeding
2021

Spherical Harmonic Decomposition of a Sound Field Based on Microphones Around the Circumference of a Human Head

Jens Ahrens, Hannes Helmholz, David Lou Alon et al
IEEE Workshop on Applications of Signal Processing to Audio and Acoustics. Vol. 2021-October, p. 231-235
Paper in proceeding
2021

Parametric Array Using Amplitude Modulated Pulse Trains: Experimental Evaluation of Beamforming and Single Sideband Modulation

Nara Hahn, Jens Ahrens, Carl Andersson
151st Audio Engineering Society Convention 2021, p. 20-26
Paper in proceeding
2021

Effects of Additive Noise in Binaural Rendering of Spherical Microphone Array Signals

Hannes Helmholz, David Lou Alon, Sebastià V. Amengual Garí et al
IEEE/ACM Transactions on Speech and Language Processing. Vol. 29, p. 3642-3653
Journal article
2021

The Far-Field Equatorial Array for Binaural Rendering

Jens Ahrens, Hannes Helmholz, David Lou Alon et al
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 2021-June, p. 421-425
Paper in proceeding
2021

A Head-Mounted Microphone Array for Binaural Rendering

Jens Ahrens, Hannes Helmholz, David Lou Alon et al
2021 Immersive and 3D Audio: From Architecture to Automotive, I3DA 2021
Paper in proceeding
2021

Creation of Large Quiet Zones in the Presence of Acoustical Levitation Traps

Carl Andersson, Jens Ahrens
IEEE International Ultrasonics Symposium, IUS
Paper in proceeding
2021

Computation of Spherical Harmonic Representations of Source Directivity Based on the Finite-Distance Signature

Jens Ahrens, Stefan Bilbao
IEEE/ACM Transactions on Speech and Language Processing. Vol. 29, p. 83-92
Journal article
2020

Interpolation and Range Extrapolation of Sound Source Directivity Based on a Spherical Wave Propagation Model

Jens Ahrens, Stefan Bilbao
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 2020-May, p. 4662-4666
Paper in proceeding
2020

Perceptual Evaluation of Mitigation Approaches of Impairments due to Spatial Undersampling in Binaural Rendering of Spherical Microphone Array Data

Tim Lübeck, Hannes Helmholz, Johannes Arend et al
AES: Journal of the Audio Engineering Society. Vol. 68 (6), p. 428-440
Journal article
2020

Evaluation of Sensor Self-Noise in Binaural Rendering of Spherical Microphone Array Signals

Hannes Helmholz, Jens Ahrens, David Lou Alon et al
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 2020-May, p. 161-165
Paper in proceeding
2020

Instrumental Evaluation of Sensor Self-Noise in Binaural Rendering of Spherical Microphone Array Signals

Hannes Helmholz, David Lou Alon, Sebastià V. Amengual Garí et al
Proceedings of Forum Acusticum, p. 1349-1356
Paper in proceeding
2020

Comparison of Mitigation Approaches of Spatial Undersampling Artifacts in Spherical Microphone Array Data Auralizations

Tim Lübeck, Johannes Arend, Hannes Helmholz et al
Fortschritte der Akustik - DAGA 2020
Paper in proceeding
2020

Reducing Spiraling in Transducer Array Based Acoustic Levitation

Carl Andersson, Jens Ahrens
IEEE International Ultrasonics Symposium, IUS. Vol. 2020-September
Paper in proceeding
2020

Tutorial on scaling of the discrete fourier transform and the implied physical units of the spectra of time-discrete signals

Jens Ahrens, Carl Andersson, Patrik Höstmad et al
148th Audio Engineering Society International Convention
Paper in proceeding
2020

Eigenschaften der Fernfeldnäherung als Modell für Schallquellendirektivität

Jens Ahrens
Fortschritte der Akustik - DAGA 2020
Paper in proceeding
2020

Perceptual Evaluation of Mitigation Approaches of Impairments Due to Spatial Undersampling in Binaural Rendering of Spherical Microphone Array Data: Dry Acoustic Environments

Tim Lübeck, Johannes M. Arend, Christoph Pörschmann et al
Proceedings of the International Conference on Digital Audio Effects, DAFx. Vol. 1, p. 250-257
Paper in proceeding
2020

Modeling continuous source distributions in wave-based virtual acoustics

Stefan Bilbao, Jens Ahrens
Journal of the Acoustical Society of America. Vol. 148 (6), p. 3951-3962
Journal article
2020

Updates on the Real-Time Spherical Array Renderer (ReTiSAR)

Hannes Helmholz, Tim Lübeck, Jens Ahrens et al
Fortschritte der Akustik - DAGA 2020, p. 1169-1172
Paper in proceeding
2019

Acoustic Levitation from Superposition of Spherical Harmonics Expansions of Elementary Sources: Analysis of Dependency on Wavenumber and Order

Carl Andersson, Jens Ahrens
IEEE International Ultrasonics Symposium, IUS. Vol. 2019-October, p. 920-923
Paper in proceeding
2019

The Effect of Loudspeaker Radiation Properties on Acoustic Crosstalk Cancelation Using a Linear Loudspeaker Array

Jens Ahrens
Proceedings of the Annual Meeting of the German Acoustical Society (DAGA)
Paper in proceeding
2019

Concept and Perceptual Validation of Listener-Position Adaptive Superdirective Crosstalk Cancellation Using a Linear Loudspeaker Array

Xiaohui Ma, Christoph Hohnerlein, Jens Ahrens
AES: Journal of the Audio Engineering Society. Vol. 67 (11), p. 871-881
Journal article
2019

Incorporating Source Directivity in Wave-based Virtual Acoustics: Time-domain Models and Fitting to Measured Data

Stefan Bilbao, Jens Ahrens, Brian Hamilton
Journal of the Acoustical Society of America. Vol. 146 (4), p. 2692-2703
Journal article
2019

Concept and Perceptual Validation of Listener-Position Adaptive Superdirective Crosstalk Cancelation Using a Linear Loudspeaker Array

Xiaohui Ma, Christoph Hohnerlein, Jens Ahrens
Journal of The Audio Engineering Society. Vol. 67 (11), p. 871-881
Journal article
2019

Real-Time Implementation of Binaural Rendering of High-Order Spherical Microphone Array Signals

Hannes Helmholz, Carl Andersson, Jens Ahrens
Fortschritte der Akustik - DAGA 2019
Paper in proceeding
2019

Perceptual Evaluation of Binaural Auralization of Data Obtained From the Spatial Decomposition Method

Jens Ahrens
IEEE Workshop on Applications of Signal Processing to Audio and Acoustics. Vol. 2019-October, p. 65-69
Paper in proceeding
2019

Minimum trap separation for acoustical levitation using phased ultrasonic transducer arrays

Carl Andersson, Jens Ahrens
Proceedings of the International Congress on Acoustics. Vol. 2019-September, p. 1117-1123
Paper in proceeding
2019

Local Directional Source Modeling in Wave-based Acoustic Simulation

Stefan Bilbao, Jens Ahrens, Brian Hamilton
Proceedings of the International Congress on Acoustics. Vol. 2019-September, p. 6377-6384
Paper in proceeding
2019

Measurement-Based Modeling of Higher-Order Non-Linearities of the Parametric Loudspeaker

Carl Andersson, Jens Ahrens
Fortschritte der Akustik - DAGA 2019 45. Deutsche Jahrestagung für Akustik
Paper in proceeding
2019

Perceptual evaluation of headphone auralization of rooms captured with spherical microphone arrays with respect to spaciousness and timbre

Jens Ahrens, Carl Andersson
Journal of the Acoustical Society of America. Vol. 145 (4), p. 2783-2794
Journal article
2019

Auralization of Omnidirectional Room Impulse Responses Based on the Spatial Decomposition Method and Synthetic Spatial Data

Jens Ahrens
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 2019-May, p. 146-150
Paper in proceeding
2019

The Perceptual Effect of Reflective Surfaces on Acoustic Crosstalk Cancelation Using an 8-Channel Linear Loudspeaker Array

Karim Bahri, Jens Ahrens
Proceedings of the International Congress on Acoustics. Vol. 2019-September, p. 7301-7306
Paper in proceeding
2018

Perzeptive Evaluierung von lautsprecher- und kopfhörerbasierter Auralisierung von Aufnahmen kugelförmiger Mikrofon-Arrays

Jens Ahrens, Carl Andersson
Proceedings of Annual Meeting of the German Acoustical Society (DAGA)
Paper in proceeding
2018

A Method for Simultaneous Creation of an Acoustic Trap and a Quiet Zone

Carl Andersson, Jens Ahrens
Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop. Vol. 2018-July, p. 622-626
Paper in proceeding
2018

Authentic Auralization of Acoustic Spaces Based on Spherical Microphone Array Recordings

Jens Ahrens, Hannes Helmholz, Carl Andersson
Proceedings of the Institute of Acoustics. Vol. 40 (3), p. 303-310
Paper in proceeding
2018

Listener-Position Adaptive Crosstalk Cancelation Using A Parameterized Superdirective Beamformer

Xiaohui Ma, Christoph Hohnerlein, Jens Ahrens
Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop. Vol. 2018-July, p. 114-118
Paper in proceeding
2018

A Geometric Model for Spatial Aliasing in Wave Field Synthesis

Fiete Winter, Jens Ahrens, Sascha Spors
Annual Meeting of the German Acoustical Society (DAGA)
Paper in proceeding
2017

Evaluation of the Impact of Spatial Aliasing on Perceived Spaciousness in Wave Field Synthesis

Jens Ahrens
43. Jahrestagung für Akustik, Kiel, Germany
Other conference contribution
2017

TU9-MOOC Communication Acoustics: Erste Erfahrungen

Sebastian Möller, Jens Ahrens
43. Jahrestagung für Akustik, Kiel, Germany
Other conference contribution
2017

Amplitude Engineering for Beamformers with Self-Bending Directivity Based on Convex Optimization

Jens Ahrens
IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA). Vol. 2017-October
Paper in proceeding
2017

The Interactive SoundScape Renderer for Loudspeaker- and Headphone-Based Spatial Sound Presentation

Jens Ahrens, Peter Bartz, Matthias Geier et al
Proceedings of the ACM Symposium on Virtual Reality Software and Technology, VRST. Vol. Part F131944
Paper in proceeding
2017

Auralization of acoustic spaces based on spherical microphone array recordings

Jens Ahrens, Christoph Hohnerlein, Carl Andersson
Acoustics ’17, Boston, MA
Other conference contribution
2017

A Cross-University Massive Open Online Course on Communication Acoustics

Sebastian Möller, Jens Ahrens
Acoustics ’17, Boston, MA
Other conference contribution
2017

Impact of Spatial Audio Presentation on the Quality of Experience of Computer Games

Timo Hedke, Jens Ahrens, Justus Beyer et al
43. Jahrestagung für Akustik, Kiel, Germany
Other conference contribution
2017

Perceptual Evaluation Of A Multiband Acoustic Crosstalk Canceler Using A Linear Loudspeaker Array

Christoph Hohnerlein, Jens Ahrens
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, p. 96-100
Paper in proceeding
2017

Spherical Microphone Array Processing in Python with the sound_field_analysis-py Toolbox

Christoph Hohnerlein, Jens Ahrens
43. Jahrestagung für Akustik, Kiel, Germany
Other conference contribution

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Showing 5 research projects

2023–2023

UAVs in the medical courier system in Västra Götaland

Arion Pons Fluid Dynamics
Tomas Grönstedt Fluid Dynamics
Jens Ahrens Applied Acoustics
Ilaria Torre Interaction design
Mafalda Samuelsson-Gamboa Interaction design
Anna K Carlsson Vehicle Safety
Sara Ljungblad Interaction design
AoA Transport

2022–2025

Spatial Audio in Practice

Jens Ahrens Applied Acoustics
KFB Acoustics

2018–2023

Binaural Rendering of Spherical Microphone Array Data

Jens Ahrens Applied Acoustics
Hannes Helmholz Applied Acoustics
Oculus Inc.

15 publications exist
2018–2019

Perceptual Evaluation of Plastic Sound Objects Generated by Massive-Multichannel Loudspeaker Systems

Jens Ahrens Applied Acoustics
European Commission (EC)

2017–2020

Levitation with localised tactile and audio feedback for mid-air interactions (Levitate)

Carl Andersson Applied Acoustics
Jens Ahrens Applied Acoustics
European Commission (EC)

7 publications exist
There might be more projects where Jens Ahrens participates, but you have to be logged in as a Chalmers employee to see them.