Bibliographic Details
| Title: |
A self-steering close-talking microphone array. |
| Authors: |
Peng Ke1 pengke@nju.org.cn, Yang Xinfeng1, Xu Boling1 |
| Source: |
Progress in Natural Science. Nov2005, Vol. 15 Issue 11, p1044-1049. 6p. |
| Subjects: |
Microphones, Transmission of sound, Transducers, Noise, Telephone systems, Research |
| Abstract: |
For communication in extremely noisy environments, close-talking microphone arrays are useful. Differential micro-phone array systems possessing excellent nearfield directivity and strong farfield-noise reduction capability are very suitable for close-talking situations. En order to improve the focusing effect at the desired bearing in the nearfield, we propose a novel self-steering system of close-talking arrays with the first-order differential sub-arrays in this paper. Calculations of directivity patterns and directivity factors show that when a kind of optimized beamforming technique is adopted even small arrays with a focusing configuration will exhibit a satisfactory nearfield directivity which is electronically steerable within a specific range. The superiority of the proposed array system is verified by experiments with real acoustic data. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
