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Using Probe-Microphone Measurements for Hearing Aid Verification

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1.  When a probe-mic fit to the NAL-NL2 prescriptive algorithm has been compared to the manufacturer’s proprietary first fit, research results typically have shown: More gain for 2000 Hz and above for the probe-fitting Improved speech understanding for the probe-fitting Improved patient benefit in the real world for the probe-fitting All of the above

2.  Which of the following is the recommended signal for verification to the NAL or DSL prescriptive-fitting target? Swept pure tones Speech noise ISTS (shaped speech) Real live speech

3.  A general rule for “good” probe-tube placement is to have the tip of the probe tube within _____ of the eardrum. 1mm 5mm 8mm 12mm

4.  A common use of the REOR measure is to determine which of the following? Correction needed for prescriptive method If hearing aid maximum output is set correctly If output for speech inputs match prescriptive targets The degree of leakage or venting

5.  A common use of the REAR measure is to determine which of the following? Correction needed for prescriptive method If hearing aid maximum output is set correctly If output for speech inputs match prescriptive targets The degree of leakage or venting