A Highly Directional Loudspeaker for Surround Channel Soundbar Reproduction

It has been shown that a loudspeaker coupled to a long narrow pipe through which sound is radiated through a series of small spaced apertures can have narrow directivity. This paper describes a process by which this concept is practically applied for use in a soundbar for delivering sound to a liste...

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Bibliographic Details
Published in2020 IEEE International Conference on Consumer Electronics (ICCE) pp. 1 - 6
Main Authors Kelly, Liam, Lee, Yoonjae, Park, Haekwang
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.01.2020
Subjects
Apertures
beamforming
Firing
IEEE Sections
loudspeaker
Loudspeakers
Mathematical models
Reflection
Transducers
waveguide
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Summary:It has been shown that a loudspeaker coupled to a long narrow pipe through which sound is radiated through a series of small spaced apertures can have narrow directivity. This paper describes a process by which this concept is practically applied for use in a soundbar for delivering sound to a listener indirectly by reflection from room surfaces. A model was developed and used to guide the process which revealed various sound quality issues for a basic design. With modifications a successful approach with narrow directional sound of an acceptable quality was found. Its architecture and performance are reported.
ISSN:2158-4001
DOI:10.1109/ICCE46568.2020.9043155