Amp Exam 1
1. HA styles 1. IIC
2. CIC
3. ITC
4. RIC/RITE
5. BTE
6. body aid
2. what 3 things should you keep 1. degree and config of HL
in mind when selecting a style? 2. patient factors
3. desired features
3. what do you need to consider in 1. feedback
the degree and config of HL? 2. occlusion effect
4. what do you need to consider in 1. dexterity
patient factors? 2. cosmetic preference
5. what do you need to consider some features not available in smaller styles
with desired features?
6. the fitting range is associated the power of the HA
with...
7. body aids - good in quiet
- durable
- good for children/elderly
- signal via cord
8. BTE - coupling with mold
- electronics all encased
- wide freq. range
- wide fitting range (mini, standard, power)
, Amp Exam 1
9. RIC/RITE - electric wire instead of acoustic tube
- size of receiver can be changed
- smoother, wider frequency response
- less feedback/occlusion with HF gain
10. ITE - mild to severe HL
- all electronic components in shell
- faceplate visible
- enhances HFs by 2-3 dB
- advantage: pinna effects
11. ITC - smallest custom style HA with directionality
- mild to severe HL
12. CIC - deeper microphone location
- best cosmetics
- reduced feedback and OE
- increased SPL at TM
- not as much gain
13. IIC - canal needs to be big enough
- invisible from outside the ear
- similar fit to CIC
14. CROS vs. BiCROS CROS: good hearing in other ear
BiCROS: HL in other ear
15. bone conduction HAs - conductive or mixed HA
- congenital malformations
- unilateral sensorineural HL
- recurring ear infections
16. BAHAs implant in mastoid transfers sound directly to cochlea
, Amp Exam 1
17. CROS candidacy 1. unilateral HL with loss in poorer ear is too severe
2. better ear is no worse than mild loss
18. BiCROS candidacy 1. asymmetric bilateral HL with loss in poorer ear is too
severe
2. input from poorer ear hinders speech understanding
19. hearing aid components - IN- 1. microphone
PUT 2. telecoil
3. FM/bluetooth
4. DAI
20. hearing aid components - MOD- 1. amplifier
IFICATION 2. attenuator
3. compressor
4. filters
21. hearing aid components - OUT- receiver
PUT
22. what are the essential compo- 1. transducers (microphone, receiver)
nents to a HA? 2. amplifier/circuits
3. batteries
4. coupling
23. microphone converts sound into electrical signal
24. amplifier increases the strength/amplitude of electrical signal and
alter balance of sound
25. receiver converts electrical signal into acoustic sounds
26. analog hearing instrument acoustic input - electronic input - amplified electronic
-processed electronic - acoustic output
1. HA styles 1. IIC
2. CIC
3. ITC
4. RIC/RITE
5. BTE
6. body aid
2. what 3 things should you keep 1. degree and config of HL
in mind when selecting a style? 2. patient factors
3. desired features
3. what do you need to consider in 1. feedback
the degree and config of HL? 2. occlusion effect
4. what do you need to consider in 1. dexterity
patient factors? 2. cosmetic preference
5. what do you need to consider some features not available in smaller styles
with desired features?
6. the fitting range is associated the power of the HA
with...
7. body aids - good in quiet
- durable
- good for children/elderly
- signal via cord
8. BTE - coupling with mold
- electronics all encased
- wide freq. range
- wide fitting range (mini, standard, power)
, Amp Exam 1
9. RIC/RITE - electric wire instead of acoustic tube
- size of receiver can be changed
- smoother, wider frequency response
- less feedback/occlusion with HF gain
10. ITE - mild to severe HL
- all electronic components in shell
- faceplate visible
- enhances HFs by 2-3 dB
- advantage: pinna effects
11. ITC - smallest custom style HA with directionality
- mild to severe HL
12. CIC - deeper microphone location
- best cosmetics
- reduced feedback and OE
- increased SPL at TM
- not as much gain
13. IIC - canal needs to be big enough
- invisible from outside the ear
- similar fit to CIC
14. CROS vs. BiCROS CROS: good hearing in other ear
BiCROS: HL in other ear
15. bone conduction HAs - conductive or mixed HA
- congenital malformations
- unilateral sensorineural HL
- recurring ear infections
16. BAHAs implant in mastoid transfers sound directly to cochlea
, Amp Exam 1
17. CROS candidacy 1. unilateral HL with loss in poorer ear is too severe
2. better ear is no worse than mild loss
18. BiCROS candidacy 1. asymmetric bilateral HL with loss in poorer ear is too
severe
2. input from poorer ear hinders speech understanding
19. hearing aid components - IN- 1. microphone
PUT 2. telecoil
3. FM/bluetooth
4. DAI
20. hearing aid components - MOD- 1. amplifier
IFICATION 2. attenuator
3. compressor
4. filters
21. hearing aid components - OUT- receiver
PUT
22. what are the essential compo- 1. transducers (microphone, receiver)
nents to a HA? 2. amplifier/circuits
3. batteries
4. coupling
23. microphone converts sound into electrical signal
24. amplifier increases the strength/amplitude of electrical signal and
alter balance of sound
25. receiver converts electrical signal into acoustic sounds
26. analog hearing instrument acoustic input - electronic input - amplified electronic
-processed electronic - acoustic output
