Near-field adaptive beamforming and source localization in the spacetime frequency domain

We revisit the topics of near-field adaptive beamforming and source localization following an alternative approach based on a spatio- temporal spectral representation of the acoustic wave field. With the proposed method, the wave field is expressed as a separable combination of the signal and spatial components that characterize the various sources in the acoustic scene. This allows beamform- ing operations such as beam steering and sidelobe canceling to be translated into a two-dimensional (2D) sampling problem, where the sampling kernels are derived according to a parametric model repre- senting the 2D spectral pattern generated in the presence of a source. Conversely, the spectral pattern can be estimated from an arbitrary input through the use of parametric spectral estimation techniques, providing a novel solution to the near-field source localization prob- lem.


Published in:
2010 Ieee International Conference On Acoustics, Speech, And Signal Processing, 2734-2737
Presented at:
2010 IEEE International Conference on Acoustics, Speech and Signal Processing, Dallas, Texas, USA, March 14-19, 2010
Year:
2010
Publisher:
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa
ISBN:
978-1-4244-4296-6
Keywords:
Laboratories:




 Record created 2010-05-25, last modified 2018-09-13

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