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Localized sound zone with directive sound source and vibrotactile shaker in open spaces

Authors: Svensson, Christian; Jeong, Cheol-Ho; id_orcid 0000-0002-9864-7317; Marozeau, Jeremy Paul Donald; id_orcid 0000-0002-4505-135X;

Localized sound zone with directive sound source and vibrotactile shaker in open spaces

Abstract

Open spaces filled with multiple sound sources playing varied music can lead to discomfort, particularly for those with hearing disabilities, due to the blending of sounds into an indistinct cacophony. Unfortunately, creating localized sound zones presents a significant challenge, with current audio systems struggling to balance high-quality sound, minimal visual impact, reduced equipment, and affordability. This study focuses on improving the listener experience by creating a personal sound zone utilizing both a directional loudspeaker and a vibrotactile shaker and comparing it with other sound system designs. A comparative study evaluated sound quality and confinement, contrasting three commercially available audio solutions with a novel hybrid system named the ’Sound Shower.’ The tested solutions included a High-Fidelity (HiFi) loudspeaker, a vertical parabolic speaker, and a sound laser speaker utilizing ultrasound technology alongside a vibrating platform. The Sound Shower uniquely integrates a parabolic speaker for mid-to-high frequencies with a shaker that delivers low frequencies through tactile vibrations. The results indicate that participants rated the parabolic speaker and the Sound Shower as more effective in creating independent sound zones, where competing music was less intrusive. Additionally, the Sound Shower’s sound quality was comparable to that of the high-fidelity loudspeaker, with no significant difference observed, whereas the other solutions received lower ratings. This study suggests that the hybrid Sound Shower system can match conventional speakers’ sound quality while maintaining a parabolic speaker’s focused audio delivery characteristic.

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Denmark
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green
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