Department of Signal Processing and Acoustics

Audio signal processing

The Audio Signal Processing Research Group is working on wideband sound technology, which is extensively applicable for example in smart phones, music technology, gaming, sound reproduction, and noise control.
Acoustic measurements at the Aalto Acoustics Lab

Our research topics and projects are related to headset signal processing, loudspeakers, sound synthesis, effects processing algorithms, digital filters, musical instruments, acoustic measurements, subjective evaluation, and interactive audio systems. The emphasis of our research is on digital signal processing and machine learning methods which account for the properties of human hearing. We collaborate with several companies, such as Genelec and Nokia Technologies. Much of our academic research is conducted in collaboration with foreign partners, such as Aalborg University, The University of Edinburgh, and Stanford University.

This research group organizes the Audio Signal Processing course at Aalto University annually in January-April. We also arrange the Audio Technology Seminar every second year (February-May). Both courses are suitable for Master's and doctoral students, who have a solid background in acoustics and digital signal processing. Additionally, we are responsible for the Noise Control course for Master's and doctoral students and for the Sound and Speech Processing course (Äänen- ja puheenkäsittely, in Finnish) for BSc students.

The Audio Signal Processing Research Group belongs to the Aalto Acoustics Lab. The research group is led by Professor Vesa Välimäki, IEEE Fellow, AES Fellow.

Group members

Leonardo Fierro

Leonardo Fierro

Doctoral Researcher
T412 Department of Information and Communications Engineering

Latest publications

Enhanced Fuzzy Decomposition of Sound Into Sines, Transients, and Noise

Leonardo Fierro, Vesa Välimäki 2023 AES: Journal of the Audio Engineering Society

Neural Modeling of Magnetic Tape Recorders

Otto Mikkonen, Alec Wright, Eloi Moliner, Vesa Välimäki 2023 Proceedings of the 26th International Conference on Digital Audio Effects (DAFx23)

BEHM-GAN: Bandwidth Extension of Historical Music using Generative Adversarial Networks

Eloi Moliner, Vesa Valimaki 2023 IEEE/ACM Transactions on Audio Speech and Language Processing

Short-term Rule of Two: Localizing Non-Stationary Noise Events in Swept-Sine Measurements

Karolina Prawda, Sebastian Schlecht, Vesa Välimäki 2023 Proceedings of AES 154th Convention

Bounded-Magnitude Discrete Fourier Transform [Tips & Tricks]

Sebastian J. Schlecht, Vesa Valimaki, Emanuel A.P. Habets 2023 IEEE Signal Processing Magazine

Pruning Deep Neural Network Models of Guitar Distortion Effects

David Südholt, Alec Wright, Cumhur Erkut, Vesa Välimäki 2023 IEEE/ACM Transactions on Audio Speech and Language Processing

Giant FFTs for Sample-Rate Conversion

Vesa Välimäki, Stefan Bilbao 2023 AES: Journal of the Audio Engineering Society

Sparse Graphic Equalizer Design

Mario Antonelli, Juho Liski, Vesa Välimäki 2022 IEEE Signal Processing Letters

Multicore implementation of a multichannel parallel graphic equalizer

Jose A. Belloch, José M M. Badía, German León, Balázs Bank, Vesa Välimäki 2022 JOURNAL OF SUPERCOMPUTING

A Low-Latency Quasi-Linear-Phase Octave Graphic Equalizer

Valeria Bruschi, Vesa Välimäki, Juho Liski, Stefania Cecchi 2022 Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22)
More information on our research in the Research database.
Research database
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