HAC Assistive Listening Device Technology 3

Question 1

Which assistive device is specifically designed to alert a person with profound hearing loss to a doorbell ringing?

Accepted Answer

Visual alerting device

Answer

Visual alerting devices flash lights or use vibration to notify individuals with severe to profound hearing loss of environmental sounds like doorbells.

Question 2

In a digital RF assistive listening system, what is the key advantage of using encrypted transmission?

Accepted Answer

Prevention of eavesdropping on private conversations

Answer

Encrypted RF transmission ensures that only authorized receivers can decode the audio signal, protecting user privacy.

Question 3

Under ADA guidelines, what is the minimum percentage of fixed seating in assembly areas that must be served by an assistive listening system?

Accepted Answer

4% (minimum 2 seats)

Answer

ADA Standards require that 4% of total fixed seats (minimum of 2) in assembly areas be served by assistive listening systems.

Question 4

A patient with a cochlear implant processor equipped with a telecoil wishes to use a hearing loop. What must the audiologist verify?

Accepted Answer

That the processor's telecoil program is activated and the loop field strength is adequate

Answer

The telecoil program must be enabled on the processor, and loop field strength must meet IEC 60118-4 standards for reliable pickup.

Question 5

What is the function of a silhouette inductor in an ALD system?

Accepted Answer

It inductively couples an FM receiver to a behind-the-ear hearing aid's telecoil

Answer

A silhouette inductor is a flat inductive coupler worn beside the hearing aid that transfers the FM receiver's audio signal to the hearing aid's telecoil.

(HAC) Hearing Aid Certification Practice Test

(HAC) Hearing Aid Certification Practice Test

HAC Assistive Listening Device Technology 3