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Back to Basics: Probe-Mic and Speech Mapping Measures

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1.  A test signal that is used in probe-mic measures that contains speech segments of six different female talkers (different languages) is:
  1. pink noise
  2. carrot passage
  3. International Speech Test Signal (ISTS)
  4. ICRA signals
2.  The best signal to assess the maximum power output (MPO) of a hearing aid is:
  1. pink noise
  2. carrot passage
  3. white noise
  4. swept pure tones
3.  Commonly used methods of equalization are concurrent and stored. Stored is recommended for use for:
  1. open fittings
  2. when measuring MPO
  3. for infants and young children
  4. evaluating power instruments
4.  A reason why the patient should be seated fairly close to the loudspeaker (around 3 feet away) is:
  1. wavelength of output signal
  2. reduce signals leaking out of the earcanal
  3. improve the SNR at the ear
  4. reduce feedback while testing
5.  If the probe-tube tip is not close enough to the TM, what we would probably notice in the output would be:
  1. a roll-off of the high frequencies (around 4000 Hz and above)
  2. a bump in the response around 3000 Hz.
  3. a roll-off of the low frequencies (below 1000 Hz)
  4. a bump in the response around 500 Hz
6.  One method to assure fairly accurate probe-tube placement is to use a marker on the tube (around 28-30 mm from the tip), and then align the marker with:
  1. the opening of the ear canal
  2. the inter-tragal notch
  3. the outer rim of the concha
  4. the reference microphone
7.  A common clinical use of the REUR is:
  1. to predict hearing aid output
  2. to calculate insertion gain
  3. to determine earmold style
  4. to calculate the RECD
8.  A common clinical use of the REOG is:
  1. to determine if the patient will have occlusion
  2. to determine degree of gain to prescribe
  3. to calculate insertion gain
  4. to obtain an estimate of the degree of venting
9.  A common clinical use of the REAR is:
  1. to determine if a fitting meets prescriptive target
  2. to determine if appropriate audibility is present
  3. to determine the effectiveness of a special feature
  4. All of the above
10.  The RECD can be used to:
  1. predict aided output when coupler output is known
  2. predict degree of occlusion effect
  3. predict the patient's uncomfortable loudness level
  4. determine effectiveness of frequency lowering

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