A preprocessing method to increase high frequency response of a parametric loudspeaker
A preprocessing method to increase high frequency response of a parametric loudspeaker
Unlike a conventional loudspeaker, a parametric loudspeaker whose principle is derived from nonlinear acoustic effects in air can create a controllable sound beam with a compact emitter. Therefore, the parametric loudspeaker is advantageous in deployments where personal audio zones are in demand. However, it is a dilemma that the sound generation principle of parametric loudspeaker leads to a narrow bandwidth of itself, which hinders its popularization in applications requiring high fidelity. In this paper, we propose a tentative treatment of harmonic distortions incurred in parametric loudspeakers, whereby the asymmetrical amplitude modulation (AAM) method is used to extend the high frequency response by doubling the higher cut-off frequency.
Shi, Chuang
c46f72bd-54c7-45ee-ac5d-285691fccf81
Gan, Woon-Seng
1936c59c-0552-498c-86a4-20bb81bb561a
Shi, Chuang
c46f72bd-54c7-45ee-ac5d-285691fccf81
Gan, Woon-Seng
1936c59c-0552-498c-86a4-20bb81bb561a
Shi, Chuang and Gan, Woon-Seng
(2014)
A preprocessing method to increase high frequency response of a parametric loudspeaker.
In 2013 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference.
IEEE.
5 pp
.
(doi:10.1109/APSIPA.2013.6694373).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Unlike a conventional loudspeaker, a parametric loudspeaker whose principle is derived from nonlinear acoustic effects in air can create a controllable sound beam with a compact emitter. Therefore, the parametric loudspeaker is advantageous in deployments where personal audio zones are in demand. However, it is a dilemma that the sound generation principle of parametric loudspeaker leads to a narrow bandwidth of itself, which hinders its popularization in applications requiring high fidelity. In this paper, we propose a tentative treatment of harmonic distortions incurred in parametric loudspeakers, whereby the asymmetrical amplitude modulation (AAM) method is used to extend the high frequency response by doubling the higher cut-off frequency.
This record has no associated files available for download.
More information
e-pub ahead of print date: 2 January 2014
Venue - Dates:
Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2013, , Kaohsiung, Taiwan, 2013-10-29 - 2013-11-01
Identifiers
Local EPrints ID: 484259
URI: http://eprints.soton.ac.uk/id/eprint/484259
PURE UUID: 928835dd-92ea-46e8-99a0-c2011e2be881
Catalogue record
Date deposited: 13 Nov 2023 18:52
Last modified: 18 Mar 2024 04:13
Export record
Altmetrics
Contributors
Author:
Chuang Shi
Author:
Woon-Seng Gan
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics