A compact microphone array system for outdoor low frequency noise measurements. To investigate the impact of wind farm noise on surrounding communities, the sound level caused by wind turbines must be accurately measured, which sometimes is hard due to wind induced noise and other interference noise. This project aims to propose a novel compact microphone array solution, where the wind induced noise is attenuated by a specially designed windproof shell first, and then the residual wind induced n ....A compact microphone array system for outdoor low frequency noise measurements. To investigate the impact of wind farm noise on surrounding communities, the sound level caused by wind turbines must be accurately measured, which sometimes is hard due to wind induced noise and other interference noise. This project aims to propose a novel compact microphone array solution, where the wind induced noise is attenuated by a specially designed windproof shell first, and then the residual wind induced noise and other interference noise are further filtered out by a specific adaptive noise cancellation algorithm based on the spherical and differential microphone array structure. With the proposed system, the measurement configuration size is expected to be reduced from the current few metres to less than 10 centimetres, and with better accuracy.Read moreRead less
Improved design of hearing protection devices with binaural voice pick-up and hearing loss compensation. Hearing protection is essential to industries operating under extreme noise conditions. However, conventional hearing protection devices such
as earplugs and earmuffs inhibit face-to-face communications. Sensear
has developed and marketed a world-first product that, apart from overcoming the aforesaid limitation, also gives the wearer a perception of his surrounding sound field. This projec ....Improved design of hearing protection devices with binaural voice pick-up and hearing loss compensation. Hearing protection is essential to industries operating under extreme noise conditions. However, conventional hearing protection devices such
as earplugs and earmuffs inhibit face-to-face communications. Sensear
has developed and marketed a world-first product that, apart from overcoming the aforesaid limitation, also gives the wearer a perception of his surrounding sound field. This project seeks to extend Sensear's products to include compensation for people with hearing loss. This will give Sensear a competitive edge in hearing protection products, and enhance Australia's reputation in assistive hearing technology. The project also presents a number of opportunities to provide
industry-focussed research training to PhD students.Read moreRead less
Gas metal arc welding process monitoring with acoustic sensing. This project aims to investigate the physical mechanisms of Gas Metal Arc Welding (GMAW) sound generation, and establish an acoustic model that correlates the acoustic signal with other wielding parameters. Key acoustic features and identification algorithms for process monitoring will be explored, and a prototype GMAW process monitoring system developed. GMAW is an arc welding process that is widely used in industry and well suited ....Gas metal arc welding process monitoring with acoustic sensing. This project aims to investigate the physical mechanisms of Gas Metal Arc Welding (GMAW) sound generation, and establish an acoustic model that correlates the acoustic signal with other wielding parameters. Key acoustic features and identification algorithms for process monitoring will be explored, and a prototype GMAW process monitoring system developed. GMAW is an arc welding process that is widely used in industry and well suited to automatic welding. The proposed monitoring method is an urgent need identified by industries for improving process control and quality. Auditory cues have been found to be critical for expert welders to adjust the weld process and to maintain quality, but the mechanisms underpinning the process are not well understood. The project will provide significant benefit to the Australian manufacturing industry’s productivity and innovation.Read moreRead less