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Investigation of the steerable parametric loudspeaker based on phased array techniques

Investigation of the steerable parametric loudspeaker based on phased array techniques
Investigation of the steerable parametric loudspeaker based on phased array techniques
Due to its ability to generate highly directional sound beams, the parametric loudspeakers are advantageous in creating personal listening zones in public areas. The directivity control of the parametric loudspeaker can provide more flexibility in its applications. This thesis provides an investigation of several practical issues of applying phased array techniques to achieve directivity control in the steerable parametric loudspeaker, and addresses two major problems: (i) spatial aliasing and (ii) mismatches between beampatterns obtained in simulation and measurement. Simulations and measurements are carried out to validate the models and methods proposed in major chapters, based on the simulation framework and measurement setup proposed in the beginning of this thesis. The feasibility of developing the steerable parametric loudspeaker based on phased array techniques is proven in practice. Moreover, a few guidelines are also provided, which can then be applied in many applications of the steerable parametric loudspeaker.
Shi, Chuang
c46f72bd-54c7-45ee-ac5d-285691fccf81
Shi, Chuang
c46f72bd-54c7-45ee-ac5d-285691fccf81
Gan, Woon-Seng
1936c59c-0552-498c-86a4-20bb81bb561a

Shi, Chuang (2013) Investigation of the steerable parametric loudspeaker based on phased array techniques. Doctoral Thesis, 241pp.

Record type: Thesis (Doctoral)

Abstract

Due to its ability to generate highly directional sound beams, the parametric loudspeakers are advantageous in creating personal listening zones in public areas. The directivity control of the parametric loudspeaker can provide more flexibility in its applications. This thesis provides an investigation of several practical issues of applying phased array techniques to achieve directivity control in the steerable parametric loudspeaker, and addresses two major problems: (i) spatial aliasing and (ii) mismatches between beampatterns obtained in simulation and measurement. Simulations and measurements are carried out to validate the models and methods proposed in major chapters, based on the simulation framework and measurement setup proposed in the beginning of this thesis. The feasibility of developing the steerable parametric loudspeaker based on phased array techniques is proven in practice. Moreover, a few guidelines are also provided, which can then be applied in many applications of the steerable parametric loudspeaker.

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Published date: November 2013

Identifiers

Local EPrints ID: 483870
URI: http://eprints.soton.ac.uk/id/eprint/483870
PURE UUID: 2610293b-ea38-46bb-a59c-74e1d952bbd2
ORCID for Chuang Shi: ORCID iD orcid.org/0000-0002-1517-2775

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Date deposited: 07 Nov 2023 17:51
Last modified: 06 Jun 2024 02:18

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Contributors

Author: Chuang Shi ORCID iD
Thesis advisor: Woon-Seng Gan

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