Exam Preview for 22380: 20Q: The Highs and Lows of Frequency Loweri

20Q: The Highs and Lows of Frequency Lowering Amplification

Please note: exam questions are subject to change.

1. The benefit of frequency lowering is affected by many extrinisic and intrinsic factors. Extrinsic factors include: patient’s age patient’s experience with amplification acoustics of speech signal and competing noise all of the above
2. Which general statement describes the body of research available on frequency lowering? there are more than 100 peer reviewed studies on current frequency lowering technology the AAA Guidelines on Frequency Lowering summarizes the available research and provides best practices for use of this technology for audiologists there are only approximately a dozen peer reviewed studies on current frequency lowering technology, and because of differences between them, it is hard to draw general conclusions across studies there are no peer reviewed studies on this technology
3. When frequency lowering technology benefits speech perception, it is likely due to an improvement in perception of: formants children’s voices glides fricatives
4. The studies of frequency lowering technology with adult patients shows: adults are not candidates for frequency lowering technology as they do not show benefit adults can and do benefit from frequency lowering technology adults show benefit from frequency lowering technology, but most reject it due to sound quality issues only adults with mild hearing loss show benefit from frequency lowering technology
5. For patients with dead regions: frequency lowering amplification should always be implemented, along with restricting the audible bandwidth to avoid amplifying in the area of the dead region try maximizing the audible bandwidth first whether proceeding with frequency lowering or traditional amplification hearing aids are not usually an option, with or without frequency lowering none of the above
6. A general rule for fitting hearing aids with frequency lowering technology is: fit to a validated prescriptive target (NAL, DSL) with frequency lowering off, turn on frequency lowering, and verify that the information you are lowering is indeed audible to the patient use manufacturer’s “best fit” rather than fitting to prescriptive targets (NAL, DSL) as the manufacturers have optimized their fittings for frequency lowering, and verify with aided sound field thresholds only fit adults as the research is inconclusive on frequency lowering in children use a validation questionnaire rather than speech mapping or probe microphone verification since these methods can’t be used with this technology
7. Too much frequency lowering: is never a bad thing will restrict audible bandwidth and may affect speech understanding should only be used in music programs as it may improve sound quality is recommended for pediatrics
8. Probe mic measures: cannot be used with frequency lowering technology can be used with frequency transposition hearing aids, but not with frequency compression hearing aids can be used with hearing aids with frequency compression but not with those that use frequency transposition can help to ensure the information that is lowered is audible, and that bandwidth is not unnecessarily restricted
9. A potential pitfall of fitting frequency lowering technology is: to have all the frequency lowering occur at frequencies that are inaudible too much frequency lowering that needlessly restricts bandwidth both A and B none of the above
10. Which of the following is not a type of frequency lowering? frequency-key shifting nonlinear frequency compression spectral envelope warping linear frequency compression