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Verification of Advanced Hearing Aid Features Using the Aurical PMM System

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1.  The goal of hearing aid feature verification is:
  1. To assess the performance of the hearing aid in the ear canal or in the coupler
  2. To ensure the feature functions as stated by the manufacturer
  3. To demonstrate hearing aid functionality to the patient and family member
  4. All of the above
2.  Obtaining unaided and occluded responses when fitting a hearing aid:
  1. Provides no useful information
  2. Cannot be performed
  3. Can help determine if the hearing aid is occluding the ear canal
  4. All of the above
3.  An ideal stimulus for verifying feedback reduction is
  1. Speech shaped noise
  2. No stimulus
  3. Birds chirping
  4. Swept pure tone
  5. None of the above
4.  A hearing fitting is truly "open" when
  1. The unaided response is the same as the occluded response
  2. The occluded response is flat
  3. The unaided response is flat
  4. The ear canal resonance is reduced or eliminated
  5. All of the above
5.  Wind noise reduction (WNR) can be verified by
  1. Not possible to verify because of artifact
  2. Holding a small fan near the hearing aid and comparing the measured response with WNR feature on and the WNR feature off
  3. A and B
  4. None of the above
6.  Digital feedback suppression (DFS) verification
  1. Can demonstrate how much the DFS algorithm affects the gain of the aid
  2. Can demonstrate how much headroom can be gained by enabling DFS
  3. Both A and B
  4. None of the above
7.  An ideal stimulus for verifying noise reduction is
  1. Swept pure tone from 250-8000Hz
  2. Birds chirping
  3. The carrot passage read by the patients spouse
  4. Continuous noise such as a vacuum cleaner or pink noise
  5. None of the above
8.  The Feature-2-Benefit element of the Aurical PMM system:
  1. Is a display of the difference curve for a set of two measurements
  2. Displays a difference curve that is calculated as the gain of the first curve minus the gain of the second curve
  3. Curve legend displays the RMS difference between two measurements and reflects the difference in RMS at the probe microphone.
  4. All of the above
  5. None of the above
9.  The following features/functions of a hearing aid can be verified using a probe microphone measurement system:
  1. MPO
  2. Directionality
  3. CROS/BICROS
  4. WNR
  5. All of the above
10.  In OTOsuite software, a menu of special tests already created to assist in advance feature verification can be accessed by
  1. Pressing the F8 key
  2. Do not exist
  3. Is in development and will be available soon
  4. None of the above
  5. All of the above

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