Hearing Assistive Technologies for Hard-of-Hearing People: State of the Science
Why Assistive
Listening?
Why isn’t a hearing aid enough?
How does the Assistive Device Help?
Classifying Assistive Listening Systems
Educational Assistive Listening
Telephone Communication Assistive Listening
Technology-based classification
A Generic Assistive Listening System (courtesy of C. Lazlo)
Generalized Transmission Model for Assistive Listening Systems
Benefits, Drawbacks and User Concerns
FM and Hearing Aids for Adults – Benefits and Drawbacks
Developing Standards for Assistive Listening in Public Places
Listening Level Recommendation
Reverberation & Noise Recommendation: STI should not be less than .84
Noise Interference
Recommendation:
No worse than 18 dB S/N
Clipping Recommendation: No greater than 18 dB from peaks