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Acoustic Bandwidth Compression Algorithm

Organization:National University of Singapore, Singapore, SG
I.P. Brief:The invention relates broadly to a method of audible monitoring of acoustic signals outside human hearing range and to a real-time system for audible monitoring of acoustic signals outside human hearing range.
Summary of I.P.:This invention enables the mapping of acoustic signals outside human hearing range to a human audible range such that the acoustic signals may be analyzed and monitored. It preserves the overall signatures and structures of the signal across bandwidth of typically few hundred kilo-hertz and presents them to audio frequency band, regardless of the signal type. It is a new way of dealing with ultrasound observation. The present invention is simplified and makes it possible to be reproduced into a real time system. Potential clients may include manufacturers of ultrasound monitoring devices for a wide range of applications such as diagnostics of electronics and mechanical systems through ultrasound, leak detection, wearable ultra/infra sound listener for eco-tourism for listening to natural environment and animals, scientific device for biological research community etc.
Patent:First Filing in the US on 30 August 2004; PCT filed on 30 August 2005
Keywords:Acoustic bandwidth compression, ultrasound detection, infrasound
Primary Industry:Instrumentation
Specific Market:Eco-tourism; Biological research instrumentation
Market Size:Eco-tourism could be a candidate for high volume market, whereas biological research instrumentation could be a relatively lower volume but high value market.
State of the Art:The current art includes ultrasound detectors and bandwidth shifters, which detect the presence of ultrasound, but do not provide a very representative sense of what the original \'sounds like\'. Either there is no bandwidth compression at all (heterodyning) or the output is significantly distorted (frequency dividers).
Figures of Merit:There is no pictorial representation that readily conveys the richness of sound. As many animals/systems radiate ultrasound containing valuable information (such as from bats, high-voltage power lines, arcs in electrical system), this system opens up windows to new applications where users can make decisions based on the ultrasound.
Tech.  Obstacles:Improvements to its signal-to-noise ratio; Rugged-ize the prototype into commercial product; Potential design issues in order to suit environmental specifications etc.
Market Obstacles:Optimizing of prototype to meet industry standards.
Patent Landscape:US Patent No. 4,792,145 “Electronic Stethoscope System and Method” US Patent No. 5,012,452 “Pulse Transformation Sonar”
Publications:Teong Beng Koay, John Robert Potter, Mandar Chitre, Sheldon Ruiz, Eric Delory - A compact real-time acoustic bandwidth compression system for real-time monitoring of ultrasound, Oceans 2004, Kobe, Japan, 9-12 Nov 2004
Research Team:5 members, with approximately 30 years of combined year of research experience: John R. POTTER (Acoustics, signal processing), Eric DELORY (signal processing), KOAY Teong Beng (Electronics). Mandar CHITRE (signal processing) and Sheldon RUIZ (electronics)


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