AudiologyOnline Phone: 800-753-2160


Exam Preview

Fitting Adults with a Broad Audible Bandwidth Using DSL: No, It Isn't Too Loud

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


1.  Comparing DSL5 to DSL4 (also known as DSLi/o), what are the key differences for different patient groups?
  1. DSL4 was only intended for use with children.
  2. DSL5 is only intended for use with infants.
  3. DSL5 provides higher targets for children and lower targets for adults.
  4. DSL4 only had targets for wide dynamic range compression hearing aids.
2.  Comparing DSL5 to DSL4, what is the recommended test signal during probe mic measures?
  1. DSL4 was only used with white noise test signals.
  2. DSL5 is only used with the ISTS test signal.
  3. DSL5 has targets for soft, average, and loud speech.
  4. DSL5 does not have targets for pure tones.
3.  Comparing DSL5 to NAL-NL1, what is the main theoretical difference?
  1. NAL targets do not use the RECD but DSL does.
  2. DSL takes away targets where the listener has dead regions and NAL doesn't.
  3. NAL reduces or omits targets when "effective audibility" is predicted to be low, but DSL doesn't.
  4. Both prescriptions allow you to enter a measured LDL.
4.  DSL5 will allow individualization of the hearing aid fitting for ALL of the following variables EXCEPT:
  1. LDL
  2. Loudness scaling
  3. RECD
  4. REUG
5.  A laboratory study of DSL4 found that adults had an range of settings that optimized speech recognition, sound quality, and loudness. Results showed that the minimum levels resulting in speech/loudness overlap were:
  1. 15 dB above target in the high frequencies to 15 dB below target in the low frequencies.
  2. 13 dB below target in the high frequencies to 7 dB below target in the low frequencies.
  3. 5 dB above target in the high frequencies to 20 dB below target in the low frequencies.
  4. 13 dB above target in the high frequencies to 20 dB below target in the low frequencies.
6.  Fittings that dropped below the optimal listening range had the following outcomes except:
  1. Loudness levels that were too soft.
  2. Speech recognition scores that were significantly below maximum.
  3. HINT scores that were too low.
  4. Listening levels that varied systematically with hearing level.
7.  In the development of DSL5, targets were developed for adults. These targets were designed to:
  1. Place speech in a comfortable listening range.
  2. Account for the differences in preferred listening levels between children and adults.
  3. Ensure a broad audible bandwidth of speech.
  4. All of the above.
8.  A clinical study of fittings to targets for the DSL5-adult prescription showed that the prescription can be fit to:
  1. Within 5 dB of target, most of the time.
  2. Within 4 dB of target, on average.
  3. Within 10 dB of targets across frequencies, 92% of the time.
  4. All of the above.
9.  The same clinical study compared the DSL5-adult prescription to preferred listening levels for speech. What did they find?
  1. Hearing aid users preferred about 3 dB more gain than prescribed.
  2. Hearing aid users preferred about 3 dB less gain than prescribed.
  3. Adult hearing aid users preferred more gain than we would expect children to use.
  4. Preferred gain increased with acclimatization.
10.  The same clinical study looked at self-reported benefit with DSL5. What did they find?
  1. On the APHAB, scores were good and close to normally reported benefit.
  2. On the HINT, scores were poorer than normally reported benefit.
  3. On the COSI, scores were good and close to normally reported benefit.
  4. B and C.

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