Beamforming using a spherical microphone array based on legacy microphone characteristics

TitleBeamforming using a spherical microphone array based on legacy microphone characteristics
Publication TypeConference Paper
Year of Publication2011
AuthorsPeters, N., & Schmeder A. W.
Other Numbers3322
Abstract

This paper presents a numerical approach that projectsfrequency-dependent directivity patterns of classicrecording microphones onto steerable beams createdwith a spherical microphone array. In an anechoicchamber, the spatial and timbral characteristics of alegacy recording microphone and the characteristics of a120-channel spherical microphone array were measured.Using a least-square matching approach, the measuredfrequency responses were used to calculate the setof lters that synthesize the desired legacy recordingmicrophone characteristic from the 120-channel sphericalmicrophone array. Synthesized microphone-beams areshown and compared with the measured characteristicsof the original legacy microphones.

Acknowledgment

This work was partially funded by the Deutscher Akademischer Austausch Diesnst (DAAD) through a postdoctoral fellowship.

URLhttp://www.icsi.berkeley.edu/pubs/other/beamforming12.pdf
Bibliographic Notes

Proceedings of the International Conference on Spatial Audio (ICSA 2011), Detmold, Germany

Abbreviated Authors

N. Peters and A. W. Schmeder

ICSI Research Group

Other

ICSI Publication Type

Article in conference proceedings