This paper proposes a novel speaker-array system to form relatively high sound pressure toward the desired location. The proposed algorithm adopts a constrained-optimization technique such that the array response to the desired response is maintained over mainlobe width while minimizing its sidelobe level. At first the characteristic of sound propagation in reverberant environment is analyzed by off-line computer simulation. Then, the performance of implemented speaker-array system is evaluated by measuring sound pressure distribution in a real test room. The results show that the proposed sound beamforming algorithm forms more concentrative sound beam to desired location than conventional algorithms even in reverberation environment.
Song, Myung; Baek, Soon-Ho; Lee, Seok-Pil; Kang, Hong-Goo
Affiliations: Yonsei University; Korea Electronics Technology Institute(See document for exact affiliation information.)
AES Convention: 125 (October 2008) Paper Number: 7641
Publication Date: October 1, 2008
Subject: Audio Digital Signal Processing and Effects
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