Instytut Glottodydaktyki Polonistycznej zaprasza na wykład
dr King Chung
"An overview of modern hearing aid technologies"
21 listopada (poniedziałek), godz. 16.30,
Grodzka 64, sala nr 06 (aula)
Modern hearing aids are sm
all computers. They not only make sounds louder but also are implemented with many digital signal processing algorithms to enhance speech understanding, improve sound quality, and i ncrease user convenience. Directional microphones, for example, use spatial differences between speech and noise to reduce the interference of background noise. Newer directional microphone can transmit signals from one hearing aid to the other hearing aid to generate more directional responses and to provide more directional ben efits. Instead of using the traditional FM or infrared systems, hearing loop systems and Bluetooth devices are used to further enhance signal to noise ratio and improve speech understanding. Noise reduction algorithms, on the other hand, take advantage of the differences between speech and noise characteristics to reduce long duration background noise, transient noise, and wind noise.
In addition, modern hearing aids are often implemented with algorithms to promote communication and monitor health condition s. This alk will discuss the design rational of these algorithms and how they can be used effectively to help people with hearing loss.