I have 40 years of experience and specialize in the field of noise control engineering, acoustics, and fluid mechanics with specific knowledge in the areas of controlling acoustic emissions from machinery, processes, and devices that move air or liquids, acoustic measurements and fluid flow measurements. I have published on such topics as fluid mechanics, fundamentals of acoustics, acoustic transduction, signal processing, flow-induced noise control, fan noise control and education in acoustics. I have testified on noise cancelling headphones.