Exam Preview for 28307: 20Q: Frequency Lowering Ten Years Later

20Q: Frequency Lowering Ten Years Later - New Technology Innovations

Please note: exam questions are subject to change.

1. Modern frequency lowering methods, as compared to those from the 1950s to 1990s: Are analog and compress the entire speech signal Use transposed vocoding, which is more sophisticated than other methods Are digital and only lower a portion of the speech spectrum Have a negative impact on sound quality but preserve speech perception
2. Which of the following statements is true in regard to the availability of a frequency lowering feature in modern hearing aids: Only a few major hearing aid companies offer frequency lowering Frequency lowering features are only available in high power hearing aids for severe-profound hearing loss Some, not all, of the major hearing aid companies offer frequency lowering but only in their entry-level products The major hearing aid companies all offer frequency lowering and some are on their second generation
3. Which of the following algorithms uses a form of frequency transposition? Widex Enhanced Audibility Extender Signia Frequency Compression ReSound SoundShaper Rexton Bandwidth Compression
4. According to this article, which manufacturer uses a "multilayered frequency transposition approach" that divides the source region into two or three sub-regions: Widex Audibility Extender Oticon Speech Rescue Starkey Spectral Envelope Warping Phonak SoundRecover
5. Which frequency lowering method works by reducing or squeezing the frequency spacing, hence bandwidth, between two limits in the source region? Frequency transposition Frequency compression Frequency vocoding Frequency phase shifting
6. When fitting new hearing aids with frequency compression to a patient who is already using hearing aids with frequency compression: You should apply the same settings as the old hearing aids, even if you are a fitting a different make/model You should use the same settings as the old hearing aids only if the hearing aid style is the same You should not apply the same settings to the new hearing aids, as frequency compression methods differ in the exact relationship between input and output frequencies You should not apply the same settings as the old hearing aids unless the hearing loss has been stable
7. SoundRecover2 differs from SoundRecover in that: SoundRecover2 has one cutoff frequency and SoundRecover has 2 cut off frequencies SoundRecover2 has two cutoff frequencies to expand audiometric fitting range by allowing the formant frequencies to be processed with little to no frequency shifting while SoundRecover has one cutoff frequency SoundRecover is adaptive while SoundRecover2 is static SoundRecover2 uses 3 cutoff frequencies while SoundRecover uses 4 cutoff frequencies
8. In general, verifying and validating fittings with frequency lowering involves: Using probe-microphone measurements to ensure that the lowered speech is audible, confirming spectral differences between /s/ and /ʃ/, and conducting post-fitting outcome measures Using an online fitting assistant and asking the patient how it sounds There is no way to verify and validate fittings with frequency lowering Using first fit to set the frequency lowering and hoping for the best
9. Online Fitting Assistants with tips and tools for fitting hearing aids with frequency lowering can be found at: www.audiologyonline.com Dr. Alexander's website, www.tinyURL.com/FLassist gusmueller.net canyouhearmenow.org
10. Determining the MAOF is an important step in a protocol when fitting frequency lowering. MAOF stands for: minimum audible output frequency master aided output frequency maximum audible output frequency minimum audiological output function
11. The author mentions that the following article provides a step by step protocol for verifying hearing aids with frequency lowering: AAA Clinical Practice Guideline on Pediatric Amplification An Update on Modified Verification Approaches for Frequency Lowering Devices by Glista, Hawkins, & Scollie (2016) EAA Handbook Guideline for Audiologic Management of the Adult Patient
12. The first step in the author's protocol for fitting frequency lowering hearing aids is: Deactivate the frequency lowering feature and fit the hearing aid to prescriptive targets using probe-microphone measures Activate the frequency lowering feature and fit the hearing aid to prescriptive targets using probe-microphone measures Set high frequency gain to maximum and activate the frequency lowering feature Set low frequency gain to minimum and activate the frequency lowering feature
13. The second step in the author's protocol for fitting frequency lowering hearing aids is: Activate the frequency lowering feature and use the fitting assistant to position the lowered speech so that the audible bandwidth is reduced as much as possible Activate the frequency lowering feature and use the fitting assistant to position the lowered speech outside the audible bandwidth (MAOF) Deactivate the frequency lowering feature and use the fitting assistant to position the lowered speech within the audible bandwidth (MAOF) Activate the frequency lowering feature and use the fitting assistant to position the lowered speech within the audible bandwidth (MAOF) while not reducing it further
14. The third step in the author's protocol for fitting frequency lowering hearing aids is: Verify that the MAOF is much lower to what it was when it was deactivated Verify that the MAOF is significantly higher to what it was when it was deactivated Verify that the MAOF is reasonably close to what it was when it was deactivated Copy and paste the settings from the right hearing aid to the left hearing aid
15. The author recommends the following signals for frequency lowering verification of "s" and "sh" with probe-microphone measures: Specially designed signals from Western University Chirps Tone Pips Siri signals