Identification of Nonlinearity of Electro-acoustic Systems using a Direct Path MISO Method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F07%3A03132049" target="_blank" >RIV/68407700:21230/07:03132049 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Identification of Nonlinearity of Electro-acoustic Systems using a Direct Path MISO Method

Popis výsledku v původním jazyce

The work deals with the Direct Path Multiple-Input Single-Output (MISO) method adapted for the identification of Nonlinearity of Electro-acoustic Systems. The method is based on a blind identification which uses decorrelated power series expansion, without having any knowledge of the shape of the nonlinear function. The nonlinear Direct Path model is represented by an equivalent Multiple-Input Single-Output linear model, where the inputs are nonlinear contributions of the original input signal. Each branch of a complex nonlinear model, with its nonlinear input, represents a "separable nonlinearity" or a static nonlinearity that is followed by a linear system so that the memory effect is represented by a linear filter. The input signal for identification is a record from stationary Gaussian random process. The method has been numerically tested on static nonlinear systems, such as limiter and death-zone systems. Also, an experiment on real electro-acoustic system has been performed.

Název v anglickém jazyce

Identification of Nonlinearity of Electro-acoustic Systems using a Direct Path MISO Method

Popis výsledku anglicky

The work deals with the Direct Path Multiple-Input Single-Output (MISO) method adapted for the identification of Nonlinearity of Electro-acoustic Systems. The method is based on a blind identification which uses decorrelated power series expansion, without having any knowledge of the shape of the nonlinear function. The nonlinear Direct Path model is represented by an equivalent Multiple-Input Single-Output linear model, where the inputs are nonlinear contributions of the original input signal. Each branch of a complex nonlinear model, with its nonlinear input, represents a "separable nonlinearity" or a static nonlinearity that is followed by a linear system so that the memory effect is represented by a linear filter. The input signal for identification is a record from stationary Gaussian random process. The method has been numerically tested on static nonlinear systems, such as limiter and death-zone systems. Also, an experiment on real electro-acoustic system has been performed.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

<a href="/cs/project/GA102%2F05%2F2054" target="_blank" >GA102/05/2054: Kvalitativní aspekty zpracování audiovizuální informace v multimediálních systémech</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

19th International Congress on Acoustics

ISBN

84-87985-12-2

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

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Název nakladatele

Sociedad Espaňola de Acústica

Místo vydání

Madrid

Místo konání akce

Madrid

Datum konání akce

2. 9. 2007

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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