AudiologyOnline Phone: 800-753-2160

Exam Preview

Linear to WDRC: A Basic Look at Compression

View Course Details Please note: exam questions are subject to change.

1.  Which of the following prescriptive formulas may be preferable for a long time linear hearing aid user with a severe to profound hearing loss?
  1. ESTAT
  2. NAL-1
  3. NAL-2
  4. NAL-R
2.  The use of compression in a hearing aid fitting versus applying only a linear fitting strategy for example, is because of the patient's:
  1. increased hearing thresholds
  2. reduced dynamic range of hearing
  3. desire to utilize wireless technology
  4. cosmetic concerns
3.  The main goals on compression are:
  1. to make soft sounds audible
  2. to make sure loud sounds are not uncomfortable loud
  3. to make sure speech remains comfortable
  4. All of the above
4.  The goal of expansion is to:
  1. make soft sounds audible
  2. keep quiet environments quiet environment
  3. make sure loud sounds is not uncomfortable loud
  4. All of the above
5.  In what specific patient population is DSL v5.0 generally most appropriate?
  1. Long time linear hearing aid users
  2. Long time analog hearing aid users
  3. Patients with severe recruitment
  4. Pediatric patients
6.  Benefits of having a multi-channel instrument include:
  1. Independent adjustment of gain and compression characteristics at specific frequencies
  2. Having invisible amplification styles
  3. Have multiple compression ratios and knee points to further meet the needs in individual patients
  4. Both A and C
7.  NAL 1 and NAL 2 utilizes:
  1. A 1:1 compression ratio only
  2. A wide dynamic range compression strategy
  3. The half-gain rule
  4. Both B and C
8.  The attack time refers to:
  1. The delay that occurs between the onset of an input signal loud at or above the compression threshold and the resulting reduction of gain
  2. Time delay that occurs between the offset of an input signal sufficiently loud to activate compression and the resulting increase of gain
  3. The duration of an input signal
  4. The duration of an input signal loud enough to activate compression
9.  How does Starkey utilize the Long Term Average Speech Spectrum in their proprietary fitting formula ESTAT?
  1. To set compression characteristics such as knee points
  2. To set the maximum pressure output only
  3. As counseling tool
  4. All of the above
10.  How is trim compressor technology being utilizing in Starkey hearing aids?
  1. To offer both NAL 1 and NAL 2 in the software
  2. To process music and speech independently
  3. To keep compression ratios and knee points low
  4. It is still in the research stages and not currently used in Starkey technology

Our site uses cookies to improve your experience. By using our site, you agree to our Privacy Policy.