Optimal modal beamforming for spherical microphone arrays
An approach to optimal array pattern synthesis based on spherical harmonics is presented.
The array processing problem in the spherical harmonics domain is expressed with a matrix …
The array processing problem in the spherical harmonics domain is expressed with a matrix …
On the design and implementation of higher order differential microphones
E De Sena, H Hacihabiboglu… - IEEE Transactions on …, 2011 - ieeexplore.ieee.org
A novel systematic approach to the design of directivity patterns of higher order differential
microphones is proposed. The directivity patterns are obtained by optimizing a cost function …
microphones is proposed. The directivity patterns are obtained by optimizing a cost function …
Localization of distinct reflections in rooms using spherical microphone array eigenbeam processing
H Sun, E Mabande, K Kowalczyk… - The Journal of the …, 2012 - pubs.aip.org
This paper presents an experimental and comparative study of several spherical
microphone array eigenbeam (EB) processing techniques for localization of early reflections …
microphone array eigenbeam (EB) processing techniques for localization of early reflections …
Robust localization of multiple sources in reverberant environments using EB-ESPRIT with spherical microphone arrays
H Sun, H Teutsch, E Mabande… - 2011 IEEE International …, 2011 - ieeexplore.ieee.org
Spherical microphone array eigenbeam (EB)-ESPRIT gives an elegant closed-form solution
for 3D broadband source localization based on the spherical harmonics (eigenbeam) …
for 3D broadband source localization based on the spherical harmonics (eigenbeam) …
Full-duplex adaptive echo cancellation in a conference endpoint
H Sun, JL Nielsen - US Patent 10,389,885, 2019 - Google Patents
A loudspeaker is driven with a loudspeaker signal to generate sound, and sound is
converted to one or more microphone signals with one or more microphones. The …
converted to one or more microphone signals with one or more microphones. The …
Time-domain implementation of broadband beamformer in spherical harmonics domain
Most of the existing spherical array modal beamformers are implemented in the frequency
domain, where a block of snapshots is required to perform the discrete Fourier transform. In …
domain, where a block of snapshots is required to perform the discrete Fourier transform. In …
Robust minimum sidelobe beamforming for spherical microphone arrays
A robust minimum sidelobe beamforming approach based on the spherical harmonics
framework for spherical microphone arrays is proposed. It minimizes the peaks of sidelobes …
framework for spherical microphone arrays is proposed. It minimizes the peaks of sidelobes …
Optimal higher order ambisonics encoding with predefined constraints
In this paper, we propose a design method for 3-D higher order ambisonics (3-D HOA)
encoding matrices which offers the possibility to impose spatial stop-bands in the directivity …
encoding matrices which offers the possibility to impose spatial stop-bands in the directivity …
An informed spatial filter for dereverberation in the spherical harmonic domain
In speech communication systems the received microphone signals are commonly
degraded by reverberation and ambient noise that can decrease the fidelity and intelligibility …
degraded by reverberation and ambient noise that can decrease the fidelity and intelligibility …
Optimal real-weighted beamforming with application to linear and spherical arrays
V Tourbabin, M Agmon, B Rafaely… - IEEE transactions on …, 2012 - ieeexplore.ieee.org
One of the uses of sensor arrays is for spatial filtering or beamforming. Current digital signal
processing methods facilitate complex-weighted beamforming, providing flexibility in array …
processing methods facilitate complex-weighted beamforming, providing flexibility in array …