Torres Aranda, AM.; López Monfort, JJ.; Pueo Ortega, B.; Cobos Serrano, M. (2013). Detection of events by means of plane wave decomposition analysis and cross-correlation technniques using a circular array of microphones. Waves. 5:39-47. http://hdl.handle.net/10251/57915
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/57915
Title:
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Detection of events by means of plane wave decomposition analysis and cross-correlation technniques using a circular array of microphones
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Author:
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Torres Aranda, Ana María
López Monfort, José Javier
Pueo Ortega, Basilio
Cobos Serrano, Máximo
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UPV Unit:
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Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions
Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia
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Issued date:
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Abstract:
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[EN] This article deals with the study and analysis of room acoustics through a process of sound field decomposition sampled with microphones circular arrays. The spatial characteristics of the sound field inside a room ...[+]
[EN] This article deals with the study and analysis of room acoustics through a process of sound field decomposition sampled with microphones circular arrays. The spatial characteristics of the sound field inside a room can be meaningfully described by means of microphone array processing techniques. In this context, the set of impulse responses sampled by a microphone array can be seen as an image made of acoustic planewave footprints. Due to the circular geometry of the microphone array, these footprints have a cosine-like shape that can be fully described as a function of the direction of arrival (DOA) of the impinging plane wave.Plane-wave decomposition (PWD) technique using microphone arrays have been shown to be a very useful tool within the applied acoustics community for their multiple applications in room acoustics analysis and synthesis. This paper conducts an analysis methodology based on the above method to analyze the sound field inside a selected set of real rooms having a well-defined purpose. Through the development of a cardioid microphones circular array as well as the implementation of a wave detection algorithm in echograms based on image-processing method, the acoustics of a room (reflections, absorptions,etc.) is obtained, analyzed and compared following to extrapolate some conclusions about its features, performance and quality
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Subjects:
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Detection of acoustic events
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Plane wave decomposition
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Cross-correlation
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Microphone arrays
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Room acoustics
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Waves. (issn:
1889-8297
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Publisher:
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Instituto de Telecomunicaciones y Aplicaciones Multimedia (ITEAM)
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Publisher version:
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http://www.iteam.upv.es/waves.php
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Project ID:
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info:eu-repo/grantAgreement/MINECO//TEC2012-37945-C02-01/ES/PROCESADO DE SONIDO PARA LA INTERACCION HOMBRE-MAQUINA: ANALISIS, SIMULACION Y SINTESIS/
info:eu-repo/grantAgreement/MINECO//TEC2012-37945-C02-02/ES/PROCESADO DE SONIDO PARA LA INTERACCION HOMBRE-MAQUINA: ENTORNOS MULTIFUENTE/
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Thanks:
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The Spanish Ministry of Science and Innovation supported this work under the projects TEC2012-37945-C02-01 and TEC2012-37945-C02-02.
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Type:
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Artículo
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