Comparison of LMS adaptive beamforming techniques in microphone arrays

Autor:	Bjelić Miloš, Stanojević Miodrag
Jazyk:	angličtina
Rok vydání:	2015
Předmět:	microphone array adaptive beamforming LMS pre-steering Electrical engineering. Electronics. Nuclear engineering TK1-9971
Zdroj:	Serbian Journal of Electrical Engineering, Vol 12, Iss 1, Pp 1-16 (2015)
Druh dokumentu:	article
ISSN:	1451-4869 2217-7183
DOI:	10.2298/SJEE1501001B
Popis:	This paper discusses principles of microphone array beamforming, specifically the use of LMS algorithm with training sequence. The problem of wideband nature of acoustical signals and its impact on the techniques of beamforming are discussed. Detailed explanation of classic narrowband and wideband LMS beamformers is presented, as well as the modification of narrowband algorithm with pre-steering. Experimental testing and comparison of algorithm performances was conducted and measurement results are presented. The used microphone array is part of Brüel & Kjær acoustical camera, and is comprised of 18 omnidirectional non-uniformly spaced microphones.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/c8c4f9f059274e0aae98b39b9adedcc7 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF