AB Sound Processing

Question 1

Sound Processing Strategy

Answer 1

Set of rules for converting acoustic signals to electric stimulating waveforms via chochlear porsthesis

Question 2

Patient Hearing Characteristics that impact Processing

Answer 2

Onset of hearing loss

Duration of hearing loss

Residual hearing loss

Question 3

AB Sound Processing Strategies

Answer 3

SAS

CIS (S)

MPS (P)

HiRes P,S

Hi Res Fidelity 120, P,S

HiRes Optima P,S

ClearVoice

Question 4

Paired Stimuli Advantages

Answer 4

• Faster Stimulus Rates
• More faithfully represents the acoustic signal

Question 5

Temporal Coding Advantages

Answer 5

• Uses ENVELOPE and FINE STRUCTURE
• High Rate of stimulation
• Preserves the fine time structure to better preserve the acoustic stimulus
• Important for:
  
  • Place of articulation
  • Intonation
  • Voicing
  • Consonant Differentiation
• Speech: Envelope is Important
• MusicFine structure is also relevant

Question 6

CIS, MPS, SAS vs. HiRes for Children

Answer 6

Children learned faster with HiRes than CIS, SAS, MPS

Pefromance improved faster for phonemes and words

Question 7

Current Steering

(HiRes Fed 120 and Optima)

Answer 7

Provides added or more precise frequency information

Achieved by simultaneous stimuluation between 2 adjacent electrodes at weighted current levels

Question 8

CIS, SAS, MPS to HI Res

HI Res to HiRes 120

Answer 8

Improved hearing in noise - 98% preferred HiRes

HiRes to HIRes 120 - 86% preferred HiRes 120