Challenge
Generating audio sound in a specific direction is useful for mobile phones, museums, retail stores and digital signage, but difficult to achieve in the low frequency range. Parametric array loudspeakers (PAL) use ultrasonics to deliver sound in a narrow laser-like beam, however the pressure level is often low. The challenge lies in developing new PAL loudspeakers that work well at low frequencies.
Solution
Using an anechoic chamber – a room designed to completely absorb the reflections of either sound or electromagnetic waves – the UTS Tech Lab team is investigating the directional performance and efficiency of parametric array speakers with the aim of designing a new device with superior performance in generating high-quality, precisely-targeted sound.
Duration
1 year
Academic team
Professor Xiaojun Qiu
Mr Jiaxin Zhong
Lab
Acoustics
Engagement model
R&D as a service
Funding
Nanjing University
Future applications
Sound reproduction
Noise control
Mobile phones
Area of expertise
Infrastructure, utilities & transport
Wireless communications & Internet of Things
Industry partnerships & research projects
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