A comparative study of preprocessing methods in the parametric loudspeaker
A comparative study of preprocessing methods in the parametric loudspeaker
The parametric loudspeaker is a directional sound reproduction device making use of the parametric sound generation. A sound beam is formed as a result of nonlinear interactions between ultrasonic beams. The parametric loudspeaker is advantageous in transmitting an equally narrow sound beam from a smaller emitter as compared to the conventional loudspeaker. Due to this advantage, parametric loudspeakers are readily applied in a variety of sound field control applications, such as creation of personal listening spots, spatial audio reproduction, and active noise control. However, there is a long concerned drawback of the parametric loudspeaker, whereby harmonic and intermodulation distortions are byproducts of the parametric sound generation. Hence, a comparative study of six preprocessing methods, including two proposed methods from this paper, is carried out. Harmonic and intermodulation distortions are demonstrated by experiments.
Shi, Chuang
c46f72bd-54c7-45ee-ac5d-285691fccf81
Kajikawa, Yoshinobu
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Shi, Chuang
c46f72bd-54c7-45ee-ac5d-285691fccf81
Kajikawa, Yoshinobu
a7d32c43-f780-4ae0-884c-08fe6f70c582
Shi, Chuang and Kajikawa, Yoshinobu
(2015)
A comparative study of preprocessing methods in the parametric loudspeaker.
In Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific.
IEEE.
5 pp
.
(doi:10.1109/APSIPA.2014.7041678).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The parametric loudspeaker is a directional sound reproduction device making use of the parametric sound generation. A sound beam is formed as a result of nonlinear interactions between ultrasonic beams. The parametric loudspeaker is advantageous in transmitting an equally narrow sound beam from a smaller emitter as compared to the conventional loudspeaker. Due to this advantage, parametric loudspeakers are readily applied in a variety of sound field control applications, such as creation of personal listening spots, spatial audio reproduction, and active noise control. However, there is a long concerned drawback of the parametric loudspeaker, whereby harmonic and intermodulation distortions are byproducts of the parametric sound generation. Hence, a comparative study of six preprocessing methods, including two proposed methods from this paper, is carried out. Harmonic and intermodulation distortions are demonstrated by experiments.
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e-pub ahead of print date: 16 February 2015
Venue - Dates:
Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2014, , Siem Reap, Cambodia, 2014-12-09 - 2014-12-12
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Local EPrints ID: 484255
URI: http://eprints.soton.ac.uk/id/eprint/484255
PURE UUID: a43675dc-9b8e-4c18-b6f1-dc5e076145ed
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Date deposited: 13 Nov 2023 18:51
Last modified: 18 Mar 2024 04:13
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Author:
Chuang Shi
Author:
Yoshinobu Kajikawa
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