A Review of Assistive Listening Device and Digital Wireless Technology for Hearing Instruments
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Assistive listening devices (ALDs) refer to various types of amplification equipment designed to improve the communication of individuals with hard of hearing to enhance the accessibility to speech signal when individual hearing instruments are not sufficient. There are many types of ALDs to overcome a triangle of speech to noise ratio (SNR) problems, noise, distance, and reverberation. ALDs vary in their internal electronic mechanisms ranging from simple hard-wire microphone-amplifier units to more sophisticated broadcasting systems. They usually use microphones to capture an audio source and broadcast it wirelessly over a frequency modulation (FM), infra-red, induction loop, or other transmission techniques. The seven types of ALDs are introduced including hardwire devices, FM sound system, infra-red sound system, induction loop system, telephone listening devices, television, and alert/alarm system. Further development of digital wireless technology in hearing instruments will make possible direct communication with ALDs without any accessories in the near future. There are two technology solutions for digital wireless hearing instruments improving SNR and convenience. One is near-field magnetic induction combined with Bluetooth radio frequency (RF) transmission or proprietary RF transmission and the other is proprietary RF transmission alone. Recently launched digital wireless hearing aid applying this new technology can communicate from the hearing instrument to personal computer, phones, Wi-Fi, alert systems, and ALDs via iPhone, iPad, and iPod. However, it comes with its own iOS application offering a range of features but there is no option for Android users as of this moment.
Abstract
Assistive listening devices (ALDs) refer to various types of amplification equipment designed to improve the communication of individuals with hard of hearing to enhance the accessibility to speech signal when individual hearing instruments are not sufficient. There are many types of ALDs to overcome a triangle of speech to noise ratio (SNR) problems, noise, distance, and reverberation. ALDs vary in their internal electronic mechanisms ranging from simple hard-wire microphone-amplifier units to more sophisticated broadcasting systems. They usually use microphones to capture an audio source and broadcast it wirelessly over a frequency modulation (FM), infra-red, induction loop, or other transmission techniques. The seven types of ALDs are introduced including hardwire devices, FM sound system, infra-red sound system, induction loop system, telephone listening devices, television, and alert/alarm system. Further development of digital wireless technology in hearing instruments will make possible direct communication with ALDs without any accessories in the near future. There are two technology solutions for digital wireless hearing instruments improving SNR and convenience. One is near-field magnetic induction combined with Bluetooth radio frequency (RF) transmission or proprietary RF transmission and the other is proprietary RF transmission alone. Recently launched digital wireless hearing aid applying this new technology can communicate from the hearing instrument to personal computer, phones, Wi-Fi, alert systems, and ALDs via iPhone, iPad, and iPod. However, it comes with its own iOS application offering a range of features but there is no option for Android users as of this moment.
참고문헌 (18)
- Crandell C, "Assistive Listening Devices" (1995), Allyn & Bacon
- Bradley JS., "Speech intelligibility studies in classrooms", J Acoust Soc Am, 80, pp.846~854 (1986)
- "Improving the classroom environment: Classroom audio technology" (2007)[URL]
- Tye-Murray N., "Foundations of Aural Rehabilitation Children, Adults, and Their Family Members. 3rd ed", pp.600~655 (2009), Delmar Cengage Learning
- Lee J., "Breakthroughs in hearing aid technology and rehabilitation", Korean J Audiol, 12, pp.145~151 (2008)
- Ricketts T., "Impact of noise source configuration on directional hearing aid benefit and performance", Ear Hear, 21, pp.194~205 (2000)
- Ricketts TA., "Distance and reverberation effects on directional benefit", Ear Hear, 24, pp.472~484 (2003)
- Holmes AE., "Assistive Listening Devices and Systems : Amplification Technology for Consumers with Hearing Loss", J Rehabil, 66, pp.56~59 (2000)
- Lee JH, "Hearing Aid Evaluation", pp.275~278 (2005), Hakjisa
- "A Review of Wireless Hearing Aid Advantages" (2012)[URL]
- "Streaming" (2014)[URL]
- "Iinterface" (2014)[URL]
- Hong SH, "The Korean Otologic Society. Current Opinion in Hearing Aid", pp.183~195 (2012), Koonja
- "the free encyclopedia" (2014)[URL]
- "Can Apple help make hearing aids cool?" (2014)[URL]
- "World’s first ‘Made for iPhone’ hearing aid launches in the UK" (2014)[URL]
- "World’s first iPhone Hearing aid ‘ReSound LiNX’, the official domestic launching" (2014)[URL]
- "Starkey Korea, iPhone hearing aid ‘HALO’ launched" (2014)[URL]