Sound directivity control using striped panel. Loudspeaker

Marko Antila, Jari Kataja, Vesa Välimäki

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

The sound radiation properties of a striped panel loudspeaker are modified in this study. The panel loudspeaker is based on Electromechanical film (EMFi) and consists of 14 individual sound radiating areas in form of narrow stripes. Each stripe can be driven individually so that the panel radiation pattern can be modified and it can be used as a directivity-controlled sound source in audio applications. The performance of the panel was analyzed using an acoustical boundary element method (BEM) model. For real-time directivity control, an algorithm was developed to process the input signals to gain appropriate radiation patterns. The measurements carried out in anechoic conditions were used to verify that the striped EMFi panel operates according to the simulations and that it produces the desired directivity pattern.
Original languageEnglish
Title of host publicationProceedings of 110th AES Convention
Number of pages8
Publication statusPublished - 2001
MoE publication typeB3 Non-refereed article in conference proceedings
EventAES 110th Convention - Amsterdam, Netherlands
Duration: 12 May 200115 May 2001

Conference

ConferenceAES 110th Convention
CountryNetherlands
CityAmsterdam
Period12/05/0115/05/01

Fingerprint

loudspeakers
directivity
acoustics
radiation
boundary element method
simulation

Cite this

Antila, M., Kataja, J., & Välimäki, V. (2001). Sound directivity control using striped panel. Loudspeaker. In Proceedings of 110th AES Convention [5306]
Antila, Marko ; Kataja, Jari ; Välimäki, Vesa. / Sound directivity control using striped panel. Loudspeaker. Proceedings of 110th AES Convention. 2001.
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Antila, M, Kataja, J & Välimäki, V 2001, Sound directivity control using striped panel. Loudspeaker. in Proceedings of 110th AES Convention., 5306, AES 110th Convention, Amsterdam, Netherlands, 12/05/01.

Sound directivity control using striped panel. Loudspeaker. / Antila, Marko; Kataja, Jari; Välimäki, Vesa.

Proceedings of 110th AES Convention. 2001. 5306.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

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N2 - The sound radiation properties of a striped panel loudspeaker are modified in this study. The panel loudspeaker is based on Electromechanical film (EMFi) and consists of 14 individual sound radiating areas in form of narrow stripes. Each stripe can be driven individually so that the panel radiation pattern can be modified and it can be used as a directivity-controlled sound source in audio applications. The performance of the panel was analyzed using an acoustical boundary element method (BEM) model. For real-time directivity control, an algorithm was developed to process the input signals to gain appropriate radiation patterns. The measurements carried out in anechoic conditions were used to verify that the striped EMFi panel operates according to the simulations and that it produces the desired directivity pattern.

AB - The sound radiation properties of a striped panel loudspeaker are modified in this study. The panel loudspeaker is based on Electromechanical film (EMFi) and consists of 14 individual sound radiating areas in form of narrow stripes. Each stripe can be driven individually so that the panel radiation pattern can be modified and it can be used as a directivity-controlled sound source in audio applications. The performance of the panel was analyzed using an acoustical boundary element method (BEM) model. For real-time directivity control, an algorithm was developed to process the input signals to gain appropriate radiation patterns. The measurements carried out in anechoic conditions were used to verify that the striped EMFi panel operates according to the simulations and that it produces the desired directivity pattern.

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Antila M, Kataja J, Välimäki V. Sound directivity control using striped panel. Loudspeaker. In Proceedings of 110th AES Convention. 2001. 5306