Publication detail
Experimental evaluation of methods for estimation of regularization in acoustic holography with MEMS sensor array
HAVRÁNEK, Z. KLUSÁČEK, S.
Original Title
Experimental evaluation of methods for estimation of regularization in acoustic holography with MEMS sensor array
Czech Title
Experimentální ověření metod pro odhad velikosti regularizačního parametru akustické holografie s použitím pole MEMS snímačů
English Title
Experimental evaluation of methods for estimation of regularization in acoustic holography with MEMS sensor array
Type
conference paper
Language
en
Original Abstract
This paper experimentaly evaluates and compares one suitable technique for regularization of inverse acoustic holography calculation with prospective method for estimation of its amount with common techniques based on Tikhonov regularization and L-curve analysis. The unusual method is based on comparison of results of two different algorithms for planar near-filed acoustic holography and subsequent search of accurate estimation of signal to noise ratio in pressure measurements for successful regularization. These estimations have been made on real measurements with MEMS microphone array. Presented results shows possibilities of all tested regularization procedures while using lower grade MEMS arrays for localization of sound sources.
Czech abstract
V tomto článku jsou popsány výsledky experimentálního ověření vhodného způsobu regularizace inverzního výpočtu zvukových polí pomocí akustické holografie doplněného novou perspektivní metodou pro odhad velikosti regularizačního parametru a porovnanou s obvyklými metodami založenými na Tikhonovově regularizaci a analýze L-křivky. Neobvyklá metoda je založena na porovnání výsledků dvou odlišných algoritmů pro rovinnou akustickou holografii v blízkém poli a následném hledání přesného odhadu poměru signál/šum v naměřených hodnotách akustického tlaku pro úspěšnou regularizaci inverzního výpočtu. Tyto odhady byly provedeny na reálných naměřených datech pomocí mikrofonního pole s MEMS snímači. Prezentované výsledky ukazují dosažitelné vlastnosti zkoušených regularizačních postupů s použitím MEMS snímačů nizší kvality pro lokalizaci zdrojů zvuku.
English abstract
This paper experimentaly evaluates and compares one suitable technique for regularization of inverse acoustic holography calculation with prospective method for estimation of its amount with common techniques based on Tikhonov regularization and L-curve analysis. The unusual method is based on comparison of results of two different algorithms for planar near-filed acoustic holography and subsequent search of accurate estimation of signal to noise ratio in pressure measurements for successful regularization. These estimations have been made on real measurements with MEMS microphone array. Presented results shows possibilities of all tested regularization procedures while using lower grade MEMS arrays for localization of sound sources.
Keywords
acoustic holography, regularization, inverse procedure, microphone array, MEMS sensors
RIV year
2012
Released
19.08.2012
Publisher
Institute of Noise Control Engineering
Location
New York
ISBN
978-1-62748-560-9
Book
INTER-NOISE 2012 Proceedings on DVD
Pages from
1
Pages to
11
Pages count
11
BibTex
@inproceedings{BUT93471,
author="Zdeněk {Havránek} and Stanislav {Klusáček}",
title="Experimental evaluation of methods for estimation of regularization in acoustic holography with MEMS sensor array",
annote="This paper experimentaly evaluates and compares one suitable technique for regularization of inverse acoustic holography calculation with prospective method for estimation of its amount with common techniques based on Tikhonov regularization and L-curve analysis. The unusual method is based on comparison of results of two different algorithms for planar near-filed acoustic holography and subsequent search of accurate estimation of signal to noise ratio in pressure measurements for successful regularization. These estimations have been made on real measurements with MEMS microphone array. Presented results shows possibilities of all tested regularization procedures while using lower grade MEMS arrays for localization of sound sources.",
address="Institute of Noise Control Engineering",
booktitle="INTER-NOISE 2012 Proceedings on DVD",
chapter="93471",
howpublished="electronic, physical medium",
institution="Institute of Noise Control Engineering",
year="2012",
month="august",
pages="1--11",
publisher="Institute of Noise Control Engineering",
type="conference paper"
}