This article comprehensively examines the intricacies and applications of frequency-lowering technologies in hearing aids. It delves into the various methods of different manufacturers, detailing the technical aspects and potential impacts on speech perception. It emphasizes the need for careful consideration in applying these technologies, tailored to individual needs, and highlights the balance between enhancing audibility and preserving the perceptual distinctions between frequency-lowered speech sounds. The article is a crucial resource for clinicians and researchers, offering insights into optimizing hearing aid performance through frequency-lowering techniques.
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Course created on March 6, 2024
Joshua Alexander is an associate professor at Purdue University in West Lafayette, Indiana. At the University of Wisconsin-Madison, he received a BS, MS, and PhD in Audiology (psychoacoustics) and researched speech perception as a post-doctoral scientist. He also completed clinical and post- doctoral fellowships at Boys Town National Research Hospital in Omaha, Nebraska. The central goal of Dr. Alexander’s research is to improve speech understanding and decrease listening effort in hearing aid users. To assist in these efforts, he has developed a PC-based hearing aid simulator that is capable of replicating key features of commercial hearing aids. This tool combined with laboratory measures and models of processing at the sensory, neural, and cognitive levels allows him and his collaborators to explore how and why certain features of hearing aids affect perception and to explore factors that might explain individual differences in hearing aid benefit.
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Advanced Level
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