Publication Details
Title: Beamforming using a spherical microphone array based on legacy microphone characteristics
Author: N. Peters and A. W. Schmeder
Group: Other
Date: November 2011
PDF: http://www.icsi.berkeley.edu/pubs/other/beamforming12.pdf
Overview:
This paper presents a numerical approach that projects frequency-dependent directivity patterns of classic recording microphones onto steerable beams created with a spherical microphone array. In an anechoic chamber, the spatial and timbral characteristics of a legacy recording microphone and the characteristics of a 120-channel spherical microphone array were measured. Using a least-square matching approach, the measured frequency responses were used to calculate the set of lters that synthesize the desired legacy recording microphone characteristic from the 120-channel spherical microphone array. Synthesized microphone-beams are shown and compared with the measured characteristics of the original legacy microphones.
Acknowledgements:
This work was partially funded by the Deutscher Akademischer Austausch Diesnst (DAAD) through a postdoctoral fellowship.
Bibliographic Information:
Proceedings of the International Conference on Spatial Audio (ICSA 2011), Detmold, Germany
Bibliographic Reference:
N. Peters and A. W. Schmeder. Beamforming using a spherical microphone array based on legacy microphone characteristics. Proceedings of the International Conference on Spatial Audio (ICSA 2011), Detmold, Germany, November 2011
Author: N. Peters and A. W. Schmeder
Group: Other
Date: November 2011
PDF: http://www.icsi.berkeley.edu/pubs/other/beamforming12.pdf
Overview:
This paper presents a numerical approach that projects frequency-dependent directivity patterns of classic recording microphones onto steerable beams created with a spherical microphone array. In an anechoic chamber, the spatial and timbral characteristics of a legacy recording microphone and the characteristics of a 120-channel spherical microphone array were measured. Using a least-square matching approach, the measured frequency responses were used to calculate the set of lters that synthesize the desired legacy recording microphone characteristic from the 120-channel spherical microphone array. Synthesized microphone-beams are shown and compared with the measured characteristics of the original legacy microphones.
Acknowledgements:
This work was partially funded by the Deutscher Akademischer Austausch Diesnst (DAAD) through a postdoctoral fellowship.
Bibliographic Information:
Proceedings of the International Conference on Spatial Audio (ICSA 2011), Detmold, Germany
Bibliographic Reference:
N. Peters and A. W. Schmeder. Beamforming using a spherical microphone array based on legacy microphone characteristics. Proceedings of the International Conference on Spatial Audio (ICSA 2011), Detmold, Germany, November 2011