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Lecture 3

LING 4P27 Lecture Notes - Lecture 3: Stethoscope, Hearing Aid, Audiology

Course Code
Barbra Zupan

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Fitting and Verication
-Physical t (want to make sure it ts perfectly)
-orientation to aid – features, insertion/removal of batteries/aid, maintenance
(e.g. preserving
battery, cleaning, removing moisture)
-is aid comfortable with/without jaw movements?
-does earmold t well? (Feedback)
-Occlusion e%ect
-patient comments
-real-ear measurement-where you plug the aid into a computer which lets you
see how the
person is hearing (tells audiologist what the aid is doing while in the ear)
-Gain and output verication
-aid is originally set to manufacturer settings; then you manipulate it to the
-adjusted through real-ear measurements and also in partnership with patient
-manipulate it to whats comfortable/uncomfortable loudness to patient
-Aided SF thresholds: tests functional gain
-Verication of special features
-directional microphones
-can check through S-N ratio, sentence recognition, etc
-Assess outcome in follow-up appointments (See Appendix 6.3 for example); kids
come in more frequently
Troubleshooting (Table 6.6)
-No sound: is battery compartment closed? Is aid on? Is volume in proper position?
-Weak/intermittent sound: Is battery weak? Is there a build up of wax?
-Feedback: is mold inserted correctly? Is volume set too high?
-Poor sound quality: is battery weak? Is there moisture in tubing?
Hearing Aid Care (Canadian hearing society)
-wipe hearing aid every day with a tissue
-wash ear mold every night so it has time to dry completely
-keep it in a dry place and avoid excessive heat: a dry kit is useful
-switch it o% before you take it o% – no feedback
-avoid getting aid wet
-keep it away from hairsprays, face powder, and hair dryer
-donʼt sleep with your hearing aid in
-keep the battery door open when you are not using the hearing aid
-keep your hearing aid out of the reach of children and pets
-donʼt attempt to repair it yourself at home
Daily hearing aid check (Canadian hearing society)
-place the battery in the hearing aid and turn it on (to the ‘M’ or microphone
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