Exam Preview for 23076: Frequency Lowering Amplification: Function,

Frequency Lowering Amplification: Function, Clinical Applications, and Practical Tips

Please note: exam questions are subject to change.

1. Frequency lowering is accomplished by using which two techniques? Transposition & translation Translation & octave manipulation Transposition & compression Compression & octave manipulation
2. The relationship between harmonics may be preserved with: Frequency Transposition Frequency Compression Frequency Translation All of the Above
3. Which frequency lowering strategy is proven to be most beneficial? Frequency transpositon Frequency compression Frequency clipping There is little data and no head to head trials to determine which is best, or best for which patients
4. Hearing aids with frequency transposition: Never allow gain for the lowered signal to be adjusted independently Use a different target prescription strategy for the lowered signals May allow gain for the lowered signal to be adjusted independently from the rest of the signal All of the above
5. When verifying targets in the text box, Dr. Scollie recommends: First, fitting to target with frequency lowering turned on First, fitting to target with frequency lowering turned off Fitting 7dB above the MPO targets for maximum audibility Using DSLv5.0-child as your fitting prescription for all patients
6. Dr. Alexander asserts that frequency lowering should not be used as a method to: Control for feedback Replace traditional amplification if that amplification does not limit bandwidth and provides sufficient high frequency audibility Both A and B None of the Above
7. Stronger than necessary frequency lowering settings lead to: Better discrimination between “s” and “sh” Elimination of feedback in open-canal fittings Poorer sound quality Higher patient satisfaction
8. Dr. Alexander presented data regarding group delay that showed: frequency lowering significantly increases group delay across products and manufacturers frequency lowering does not cause any increase in group delay in any products currently on the market while frequency lowering may slightly increase group delay, it is not significant and will not negatively impact the fitting group delays are consistenly shorter with frequency lowering on v. off
9. Which speech perception test provides high-frequency emphasis sentence material? Quick-SIN BKB-SIN HINT ESP
10. According to Glista, Scollie, & Sulkers (2012), acclimatization for frequency lowering can be achieved in children in: 3 - 4 weeks 5 - 6 weeks 6 - 8 weeks 10 - 12 weeks
11. What is recommended by both authors for post-fitting verification measures? Testing unaided thresholds compared to aided thresholds with frequency lowering turned off Speech perception testing Word-recognition testing using a high-frequency word list Electroacoustic (probe-mic) measures
12. What is the primary drawback of using live voice to verify output of /s/ and /sh/? Live voice is not calibrated Directional algorithms are activated in all hearing aids to live /sh/ stimuli Not all test boxes recognize live voice input Contamination of equipment
13. Most frequency lowering hearing aids use an activation (cutoff) frequency of: 750 Hz 1000 Hz 1500 Hz 2000 Hz
14. In patients who utilize frequency-lowering strategies, one of the biggest sources of variability on outcome measures is likely: The brand of hearing aid used The brand of test box used for verification The patient’s age How the frequency lowering settings interact with the individual hearing loss
15. According to Bentler, Walker, McCreery, Arenas, & Rousch (2013): There was no difference in outcome measures between those fit with nonlinear frequency compression and those fit with conventional processing Subjects fit with frequency compression scored significantly higher on all outcome measures Subjects preferred conventional processing over frequency compression Frequency compression was found to be detrimental to overall speech understanding