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| hearing instrument manufacturers software association, oversees delivery & quality control of manufacturer's fitting software; software is obtained from manufacturer |
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| software platform produced by HIMSA |
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| device used to program hearing aids, requires a wired connection between hearing aids, Hi-Pro and computer |
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| portable interface, eliminates some of the wires of the Hi-Pro box by using a Bluetooth transmission signal |
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| connect Hi-Pro to hearing aids; hearing aids may be connected to these with programming pills, strips, or direct connection |
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| used with some products to connect aids to cables |
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| used with some products to connect aids to cables, fits into batter compartment the same as a battery |
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| software from a manufacturer that can be used to program their hearing aids and is NOT run under the NOAH module |
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| setting that the manufacturer believes to be a reasonable starting point for the fitting; for gain, output, & special features |
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| to speed up the fitting process, manufacturers have "built-in" (___) settings that relate to first fit. |
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| manufacturer's algorithm that selects gain & output for different inputs for the first fit (typically little published data to describe how various values were obtained) [secret!] |
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| What are the 2 current prescription methods supported by evidence? |
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| What ages are NAL-N2 and DSL 5.0 for? |
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| NAL-NL2=adults and DSL 5.0=children |
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| What does NAL-NL2 and DSL 5.0 stand for? |
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Definition
-Nation Acoustic Laboratories-Non-Linear version 2
-Desired Sensation Level version 5 |
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| How do audiologists often choose a hearing aid company? |
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| familiarity, products used by others, and customer service |
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| What is a proprietary formula? |
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| A fitting formula that the hearing aid company has come up with. |
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| This is where prescriptions try to give patients the same amount of loudness that a person with normal hearing who was listening to the same sound would perceive; May give too much gain, especially for higher frequencies |
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| This is where prescriptions try to take all the key frequencies of speech & make them the same loudness to the hearing-impaired person |
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| Loudness equalization (NAL) |
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All NAL Formulae:
-Use loudness ___
-Try to make all octave bands ___ loud (Less gain applied to ___-frequency energy compared to ___-frequency energy)
-Tries to restore ___ & maintain ___ for speech sounds
-Evidence suggests that ___ of patients prefer gain & output derived from the NAL formula |
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| equalization; equally; low; high; audibility; 2/3 |
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| This was the first formula to use the SPL-o-Gram |
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| ___-___ measures are the gold standard to verifying prescriptive fitting method is being met in person’s real ear |
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NAL-NL2 and Mixed Hearing Loss:
-Uses the method for ___
Then adds gain equal to __% of the ABG |
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| What are some older prescriptive methods? |
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Definition
Berger, POGO 2, half-gain rule, 1/3 gain rule, mirror the audiogram
[image] |
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Term
| How Close is Close Enough To Target? |
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Definition
| within 5 dB from 250-4000 Hz |
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Term
| This is defined as listening to amplified sound results in gradual, long-term changes in patents’ ability to hear; relates to ability to hear speech or getting accustomed to listening to speech |
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| ________: if IHCs &/or auditory nerves to which they connect do not function over a range of freqs. |
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| If enough amplification in a dead region is provided, it may be... |
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Definition
| detected in other parts of the cochlea |
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| When can you consider and area a cochlear dead region? |
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Definition
| Threshold in the severe-profound region can be considered a dead region; widely debated |
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| What can help with cochlear dead regions? |
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Definition
| frequency lowering/shifting |
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-If HCs work, the masker that most easily masks the tone will have the ___ CF as the tone
-If dead region, the CF of the masker will ___ from the tone |
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Research on dead regions:
-Extending amplification upward past the lower limit of a HF dead region _______ improve speech understanding.
-Same as above in noise; but speech understanding in quiet was maximized if amplification was ___. |
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-Avoid feedback, do not amplify ___ ___ into a dead
region (where hearing loss & prescribed gain both tend to be significant)
-Can detect dead regions with the ___ test and/or ___ ___ |
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Definition
| too far; TEN; tuning curves[image] |
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Term
TEN Test:
-Threshold equalization noise: noise that creates equal ___ thresholds at all freqs for those with normal HTLs
-TEN test creates ___ ___ in dB HL
-Retest audiogram with TEN noise & ___ the new
masked thresholds to the orig. audio
-Use __-dB step size for both audiograms
-May not be able to get a result in those with ___-___ loss
-If dead region, the masked threshold of tone will be ___ than the orig. audiogram threshold & the power of the masker |
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Definition
| masked; equal masking; compare; 2; severe-profound; greater |
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Term
-Measure frequency specific ___
-setting OSPL90 too low, may interfere with ___ understanding and not be ___ enough |
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| prescribed the highest OSPL90 equal to the average of LDLs at three frequencies (i.e. 500, 1000, & 2000 Hz) |
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Contour Test:
-Developed by Robyn ___,
PhD
-Do the contour test with ___; test each ear
separately
-Review loudness anchors with pt (make available to
pt in the booth) [image]
-Test __ frequencies per ear
-Pt listens to pure-tones & assigns each a ___ |
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Definition
| Cox; earphones; 2 (i.e. 500 & 3000 Hz; a high and a low frequency); category |
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