Listener-Position Adaptive Crosstalk Cancelation Using A Parameterized Superdirective Beamformer
Paper in proceeding, 2018

We present a method for cancelation of the acoustic crosstalk between the ears of a listener using a linear loudspeaker array. This allows for controlling the signals that arise at listener's ear independently of each other so that binaural cues can be imposed. We employ superdirective near-field beamforming (SDB) over the vast part of the frequency range. Allowing the listener to move in front of the array requires the computation of a new SDB solution for each possible position of the listener, which is a computationally expensive procedure. We show that the beamformer weights exhibit a very smooth evolution for listening positions along a line parallel to the array. This makes it straightforward to parameterize pre-computed beamformer weights with a few parameters for each frequency. Upon realtime execution, the beamformer weights can be determined efficiently for any arbitrary position along the listener contour from the parameters with negligible error. Simulation results show that the proposed beamformer provides a higher channel separation than previously published solutions while maintaining robustness.



Xiaohui Ma

Aarhus University

Dynaudio A/S

Christoph Hohnerlein

Technische Universität Berlin

Jens Ahrens

Chalmers, Architecture and Civil Engineering, Applied Acoustics

Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop

2151870X (eISSN)

Vol. 2018-July 114-118 8448471
978-1-5386-4752-3 (ISBN)

10th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM)
Sheffield, United Kingdom,

Areas of Advance

Information and Communication Technology

Subject Categories

Computational Mathematics

Control Engineering

Signal Processing



More information

Latest update

4/5/2022 7