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DSL for Bone-Anchored Hearing Devices: Prescriptive Targets and Verification Solutions

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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 measurements to fit hearing aids to a validated prescriptive target has been shown to:
  1. Promote better acceptance of directional microphones
  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 typical practice today, most clinics fit bone conduction hearing aids using 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 behavioural thresholds (functional gain or aided audiogram)
4.  We can use the following terms for "abutment-worn" and "headband-worn" bone conduction hearing aids:
  1. Percutaneous and transcutaneous
  2. Cochlear and Oticon
  3. Ponto and BP-100
  4. BAHA and Entific
5.  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
6.  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. Calculation of upper limits of comfort
  3. Application of transforms to convert hearing aid and assessment data to the same measurement scale
  4. All of the above
7.  The DSL-BCD prescription uses the _____ measurement scale?
  1. dB REIG
  2. dB SPL
  3. dB FL
  4. dBA
8.  To develop the DSL-BCD prescription, the authors made several changes to DSL v5:
  1. They developed a transform to convert thresholds to dB FL
  2. They incorporated the output limiting of the BCD into the prescription
  3. They added a low cut based on experimental evidence
  4. All of the above
9.  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
10.  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

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