Multi-beam design method for a steerable parametric array loudspeaker
Multi-beam design method for a steerable parametric array loudspeaker
The parametric array loudspeaker (PAL) uses an ul-trasonic transducer array (UTA) to transmit inaudible ultrasonic frequencies into air, in order for an audible difference frequency to be produced by the parametric acoustic array (PAA). The PAL is advantageous as it possesses a much narrower sound beam as compared to the conventional loudspeaker of the same size. The mixed Gaussian directivity method has been previously proposed in a single-beam design method of the PAL to approximate the Westervelt's directivity. It allows the convolution model to be analytically decomposed into solvable equations. Due to the nonlinear nature of the PAL, linear combinations of singlebeam designs do not readily yield a multi-beam design. For this reason, this paper establishes a specific multi-beam design method and validates its effectiveness by 2D nonlinear acoustic field simulations.
416-420
Shi, Chuang
c46f72bd-54c7-45ee-ac5d-285691fccf81
Bai, Ruyu
110b5d6f-cef7-4420-af12-0f5a608e106e
Gou, Jiacheng
4f92c3b1-a1a8-4cf4-805b-4cba2852561d
Liang, Jiangnan
a42f52fd-6d3f-4466-85a4-9a97f17aba4d
31 December 2020
Shi, Chuang
c46f72bd-54c7-45ee-ac5d-285691fccf81
Bai, Ruyu
110b5d6f-cef7-4420-af12-0f5a608e106e
Gou, Jiacheng
4f92c3b1-a1a8-4cf4-805b-4cba2852561d
Liang, Jiangnan
a42f52fd-6d3f-4466-85a4-9a97f17aba4d
Shi, Chuang, Bai, Ruyu, Gou, Jiacheng and Liang, Jiangnan
(2020)
Multi-beam design method for a steerable parametric array loudspeaker.
In 2020 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC) - Proceedings.
IEEE.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
The parametric array loudspeaker (PAL) uses an ul-trasonic transducer array (UTA) to transmit inaudible ultrasonic frequencies into air, in order for an audible difference frequency to be produced by the parametric acoustic array (PAA). The PAL is advantageous as it possesses a much narrower sound beam as compared to the conventional loudspeaker of the same size. The mixed Gaussian directivity method has been previously proposed in a single-beam design method of the PAL to approximate the Westervelt's directivity. It allows the convolution model to be analytically decomposed into solvable equations. Due to the nonlinear nature of the PAL, linear combinations of singlebeam designs do not readily yield a multi-beam design. For this reason, this paper establishes a specific multi-beam design method and validates its effectiveness by 2D nonlinear acoustic field simulations.
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Published date: 31 December 2020
Venue - Dates:
2020 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), , Aukland, New Zealand, 2020-12-07 - 2020-12-10
Identifiers
Local EPrints ID: 484173
URI: http://eprints.soton.ac.uk/id/eprint/484173
PURE UUID: 12eb098f-b919-4adb-b5a1-aeac59bf334f
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Date deposited: 10 Nov 2023 18:32
Last modified: 18 Mar 2024 04:13
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Contributors
Author:
Chuang Shi
Author:
Ruyu Bai
Author:
Jiacheng Gou
Author:
Jiangnan Liang
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