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Verification and DSL in Bone Anchored Hearing

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1.  A prescriptive target is a set of calculations that are used to:
  1. Limit the maximum output of the device to appropriate levels.
  2. Recommend the slope of the hearing aid’s frequency response.
  3. Recommend the compression ratio of the hearing aid.
  4. All of the above.
2.  In studies of users of air-conduction hearing aids, the routine use of verification to a validated prescriptive target has been shown to:
  1. Promote better fitting earmolds
  2. Promote better consistency of speech audibility across individual patients.
  3. Promote less use of the hearing aids as measured by data logging.
  4. Promote early use of hearing aids by people with hidden hearing loss.
3.  In the past, the only available clinical strategy for fitting bone conduction hearing aids used this type of measurement:
  1. Measures of hearing aid output from laser Doppler vibrometry.
  2. Measures of hearing aid output from real ear probe microphones.
  3. Measures of hearing aid gain or output from a skull simulator.
  4. Measures of hearing aid gain or output from behavioral thresholds (functional gain or aided audiogram).
4.  Studies by Hodgetts et al (2010; 2011) have demonstrated that research equipment can be used to:
  1. Measure the aided response of percutaneous bone conduction hearing aids for speech.
  2. Measure the impact of adjusting the frequency response shape on speech perception for bone-anchored hearing aid users.
  3. Define the dynamic range of the listener, for the levels of sound provided by a bone-anchored hearing aid.
  4. All of the above.
5.  Mapping hearing aid targets into a listener’s dynamic range is a key element of the DSL Method. This usually requires:
  1. Calculation of in-situ thresholds.
  2. Application of transforms to convert hearing aid and assessment data to the same measurement scale.
  3. Calculation of upper limits of comfort.
  4. All of the above.
6.  The DSL-BCD prescription uses the _____ measurement scale.
  1. dB REIG
  2. dB SPL
  3. dB FL
  4. dBA
7.  When fitting to DSL-BCD targets, the hearing device can be connected to and measured on:
  1. A 2cc coupler.
  2. A skull simulator.
  3. A 0.v4 cc coupler.
  4. A sound level meter.
8.  Connection of the skull simulator allows measurement of the following features of the hearing device:
  1. Fit to prescriptive targets
  2. Directionality and noise reduction
  3. Wireless signal transmission from external sources (FM, Phone)
  4. All of the above
9.  Fitting on a FLogram allows measurement of the following features of the hearing device:
  1. The smoothness of the aided frequency response
  2. The frequency range of audible speech
  3. The aided speech intelligibility index
  4. All of the above
10.  Streaming of smartphone or remote mic signals to a bone-anchored device can be checked using verification equipment:
  1. Verification is not needed
  2. By measuring the spectra on an FLogram & by performing listening checks through the headphones
  3. Smartphone streaming is not available
  4. None of the above

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