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The Benefits of Nonlinear Frequency Compression for People with Mild Hearing Loss

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1.  What is the principal reason for using frequency compression in a hearing instrument?
  1. To enable high-frequency sounds to be perceived more easily.
  2. To make low-pitched sounds easier to hear.
  3. To make soft sounds louder.
  4. To reduce background noise.
2.  Give two examples of sounds that hearing-instrument users might be able to identify more readily when frequency compression is enabled
  1. High-frequency speech sounds, such as /s/
  2. birdsong
  3. high-pitched musical sounds
  4. all of the above
3.  While people with mild hearing loss may be able to compensate for their hearing loss at times by inferring misheard items from context, they may exhibit:
  1. stress and fatigue
  2. increased mental effort in trying to identify sounds
  3. both A and B
  4. none of the above
4.  Traditional amplification may not sufficiently improve high frequency audibility to a user's satisfaction if:
  1. high insertion gain results in feedback
  2. high insertion gain results in increased circuit noise
  3. the patient's loss is such that he has poor frequency resolution
  4. all of the above
5.  SoundRecover allows a portion of the incoming sound above a particular cut-off frequency to be compressed and shifted to lower frequencies. Below the cut-off frequency:
  1. Sounds are shifted to regions above the cut off frequency
  2. No frequency changes are made to the sounds
  3. Sounds are compressed and shifted to even lower frequency regions
  4. All of the above
6.  How do typical spectra of female and male /s/ sounds differ?
  1. There is no difference on average
  2. Female /s/ sounds typically have the energy peak at a higher frequency than male /s/ sounds.
  3. Male /s/ sounds typically have the energy peak at a higher frequency than female /s/ sounds.
  4. The spectra of female /s/ sounds show no variability from speaker to speaker
7.  Which of the following statements is true regarding frequency compression?
  1. Nonlinear frequency compression is a form of peak clipping
  2. Nonlinear frequency compression is a form of noise reduction
  3. Nonlinear frequency compression should be used with corner audiograms only
  4. None of the above
8.  Which statement is true regarding the benefit of nonlinear frequency compression to people with mild hearing losses as discussed in this article?
  1. Nonlinear frequency compression does not improve audibility of any consonants for those with mild hearing loss.
  2. It is not known if mild hearing losses benefit from nonlinear frequency compression.
  3. There is evidence that people with mild hearing losses can discriminate /s/ sounds at lower thresholds with nonlinear frequency compression.
  4. There is evidence that people with mild hearing losses can discriminate /s/ sounds at higher thresholds with nonlinear frequency compression.
9.  The Adaptive Logatom test:
  1. Is a phoneme test that uses nonsense syllables
  2. Varies the vowel between stimuli
  3. Is a hearing in noise test using sentence stimuli
  4. Uses spondee words to test speech threshold
10.  Subjects in this study rated hearing comfort:
  1. better with SoundRecover on than with SoundRecover off
  2. better with SoundRecover off than with SoundRecover on
  3. the same with SoundRecover on and SoundRecover off
  4. hearing comfort was not assessed in this