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ASU Speech and Hearing Clinic
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Speech and Language
Overview
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Hearing
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Assistive Listening Devices
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What are Assistive Listening Devices
Advantages and Disadvantages of Assistive Listening Devices
What is a Telecoil?
Telecommunications Devices
Living WELL with Hearing Loss
Hearing Aid Related Services
Hearing Aid Evaluation and Fitting
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What are Assistive Listening Devices
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Advantages and Disadvantages of Assistive Listening Devices
Hearing
Overview
Diagnostic Services
Rehabilitation Services
Assistive Listening Devices
Alerting/Signaling Devices
Telecommunications Devices
What are Assistive Listening Devices
Advantages and Disadvantages of Assistive Listening Devices
What is a Telecoil?
Hearing Aid Evaluation and Fitting
Hearing Aid Related Services
Living WELL with Hearing Loss
Advantages and Disadvantages of Assistive Listening Devices
Hardwired Assistive Listening Devices
Advantages
Good for one-to-one communication, TV, car, restaurant or small groups
Good for providing temporary amplification (i.e. hospital, nursing home)
Good portability—battery operated
Lower cost
Disadvantages
Location and positioning of wires
Limited seating options
Cord length restricts application to small groups
Frequency-Modulated (FM) Assistive Listening Devices
Advantages
Good flexibility and versatility for all listening situations
FM signal is not obstructed by barriers, may be used outside
Good portability—battery operated
Wire-free reception with no seating restrictions
Disadvantages
Potential for outside radio interferences
Privacy if FM signal is received by other FM receivers
High initial purchase price
Transmitter and receiver must operate on the same FM frequency
Infrared Assistive Listening Devices
Advantages
High sound fidelity for music and speech—excellent for TV listening
Infrared receivers are universal—will work with any IR transmitter
Isolation of signal to the room—important if privacy is an issue
Freedom from interference from outside transmitting sources
Wire-free reception with no seating restrictions
Disadvantages
AC-powered transmitter limits portability and versatility
IR can only be used indoors
IR signal is obstructed by barriers—requires line-of-sight reception
Induction Loop Assistive Listening Devices
Advantages
Cost benefit for users of telecoil equipped hearing aids
Wire-free reception—freedom to move around within a specified area
Good for TV viewing, meetings, one-to-one and groups
Disadvantages
Seating restricted to looped area
More involved installation limits portability and versatility
Variability of signal strength within the looped area