Ultrasound-in-Air: New applications need improved measurement methods and procedures, and appreciation of any adverse effects on humans

摘要

In the growing topic of ultrasound in air, innovations in powerful sources and digital signal processing have produced a wealth of proposed devices and applications. However if we are to realize the benefits of these for companies and consumers, the introduction of these new technologies must come in an environment where we can properly conduct standardized field and source measurements with appropriate processes and calibrations, and set exposure limits based on knowledge of the potential for adverse effects on humans: these are difficult areas in which the research base is scarce. This paper covers new devices and applications, the difficulties with measurements and calibrations, and discoveries regarding the potential for adverse effects.