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| According to Van Tasell, a hearing loss of cochlear origin with air-conduction thresholds less than ____ dB HL, is consistent with damage to the outer hair cells. |
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| Which of the following is not considered a significant perceptual consequence of mild/moderate hearing loss? |
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Definition
| change in temporal resolution |
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| Is spectral or temporal resolution of speech more important for intelligibility? |
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| For contextually rich speech material (continuous discourse), 100% correct speech recognition performance can be achieved with an Articulation Index (AI) as low as |
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| Quality control, physical fit, and performance comprise the _______________ stage of the hearing aid fitting process |
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| The use of _____________ is the primary and preferred method of verifying the performance of hearing aids. |
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| For what scale does the patient help determine specific communication settings in evaluating aided goals and performance. |
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| Which speech recognition test would most likely be the best predictor of real-world speech understanding in noise |
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Term
| what would require the fewest number of conversions in derive real-ear fitting targets: |
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Definition
| thresholds in SPL measured at the eardrum |
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| Different gain prescriptions have been shown to produce significant differences in intelligibility. T/F |
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Definition
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| If verification findings are excellent, validation of the fitting does not need to occur. T/F |
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Definition
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Term
| For individuals with sensorineural hearing loss, aided and unaided speech understanding deficits in noise are likely due to a combination of inaudibility and suprathreshold deficits. T/F |
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Definition
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Term
| Due to their smaller ear canals, all other things being equal, the output measured in a child's ear canal while wearing a hearing aid is likely higher than that measured in an adult's. T/F |
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Term
| Linear processing is always used in conventional hearing aids. T/F |
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Definition
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Term
| With linear processing, peak clipping is always used for output limiting. T/F |
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Definition
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Term
| Whether linear or WDRC processing will be used for a given patient will depend on: |
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Definition
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Term
| The advantages of a binaural hearing aid fitting (assuming bilateral, symmetric hearing loss) include: |
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Definition
| performance in noise, localization, auditory deprivation |
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Term
| The Coupler Response for Flat Insertion Gain (CORFIG): |
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Definition
| can be applied to real-ear insertion gain targets to determine individual-specific coupler targets, requires incorporation of a correction factor based on hearing aid style, requires RECD data in order to be calculated |
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Term
| NAL-R is an appropriate fitting strategy for a hearing aid incorporating WDRC processing. |
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Definition
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Term
| There is sufficient evidence to suggest that one particular prescriptive strategy is superior to others for most patients. |
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Term
| Part of the loudness equalization rationale is to normalize overall loudness while equalizing loudness across frequency bands. |
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Definition
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Term
| If the manufacturer provides a proprietary fitting strategy for a given device, use of a device independent strategy should not be considered. |
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Definition
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Term
| The hearing aid prescription that generates the highest predicted speech intelligibility, as determined via the articulation index, always yields the highest speech intelligibility and sound quality. |
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Definition
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Term
| Fitting strategies based on a loudness normalization rationale have been shown to provide the highest sound quality in most environments. |
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Definition
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Term
| If performed appropriately and consistently, loudness scaling tasks are reliable. |
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Definition
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Term
| For probe microphone and test box measures, signal choice can have an impact on aided output. |
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Definition
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Term
| To determine a multichannel hearing aid's maximum output at any given frequency, a 90 dB speech input should be used. |
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Definition
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| The noise reduction algorithm should never be turned off during ANSI measurements. |
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Definition
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| As long as the equalization data is stored, the patient can move during real-ear testing. |
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Definition
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Term
| The depth of the probe microphone in the ear canal can impact both unaided and aided output. |
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Definition
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Term
| The AV subscale score on the APHAB typically improves significantly after a hearing aid fitting. |
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Definition
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Term
| Which prescriptive strategy incorporates a hearing loss "desensitization" factor? |
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Definition
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Term
| To minimize the effect of a noise reduction alogrithm during verification, the test signal should have speech-like temporal and spectral characteristics |
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Definition
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Term
| Verification using real-ear insertion gain can help account for an unusual REUR |
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Definition
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Term
| Which prescriptive strategies are designed for fitting linear hearing aids |
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Definition
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Term
| Which factors can have an impact on the output measured from a hearing aid in the test box or patient's ear? |
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Definition
| length of release time, number of channels, digital noise reduction, test signal |
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Term
| Sufficient evidence exists to state that directional microphone technology provides benefit for most hearing aid users in background noise. |
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Definition
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Term
| Sufficient evidence exists to state that digital signal processing alone significantly increases speech intelligibility in all types of background noise. |
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Definition
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Term
| Digital noise reduction is more effective for steady state, environmental noises as opposed to speech noise. |
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Definition
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Term
| All potential hearing aid users require hearing aids that incorporate signal processing to reduce background noise. |
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Definition
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Term
| A large vent can reduce the effectiveness of a directional microphone. |
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Definition
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Term
| The long-term spectrum and amplitude of background noise is always different from the target speaker. |
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Definition
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Term
| Microphone mismatch will decrease the effectiveness of a directional microphone. |
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Definition
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Term
| The automatic program selection feature available on some high end products will select the program the user deems appropriate 99% of the time. |
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Definition
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Term
| Feedback reduction on advanced digital products is accomplished by reducing overall gain at all frequencies whenever feedback is detected. |
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Definition
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Term
| A hearing aid incorporating noise reduction via directional microphones and advanced signal processing will likely perform better than a hearing aid with only one of these options. |
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Definition
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Term
| If both devices have an omnidirectional microphone only, a CIC hearing aid will demonstrate greater directionality than a BTE hearing aid. |
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Definition
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Term
| A "compensated" or "equalized" response can often be chosen in order to make up for the loss of high frequency gain that naturally occurs in the directional mode. |
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Definition
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Term
| Adaptive directionality has been shown to be superior to fixed directionality in most situations with background noise. |
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Definition
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Term
| Subjective findings on the benefit of digital noise reduction are generally better than objective findings |
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Definition
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Term
| Hearing aids with automatic directionality are generally not indicated for individuals with cognitive or dexterity issues. |
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Definition
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Term
| Directional microphones should not be used with open style fittings since they will not be effective. |
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Definition
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Term
| For what environments/situations would directional microphones lose their effectiveness |
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Definition
| highly reverberant environment, noise coming from behind the speaker |
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| Deficits in frequency resolution will likely not impact an individual's aided ability to understand speech in noise. |
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Definition
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Term
| If an individual has poor temporal resolution, he or she might have difficulty discerning speech sounds during briefs gaps in background noise. |
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Definition
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Term
| An individual with hearing loss and complete recruitment and an individual with normal hearing would likley rate the loudness of high intensity sounds similarly. |
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Definition
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Term
| All individuals with severe sensorineural hearing loss should be fitted with hearing aids using linear processing. |
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Definition
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Term
| A single-channel hearing aid is likely appropriate for a mild to severe, sloping sensorineural hearing loss. |
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Definition
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Term
| If hearing aids restore audibility of all speech sounds, the user will always demonstrate normal aided functioning. |
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Definition
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Term
| Expansion should be used sparingly as it has a major impact on the audibility of conversational level speech. |
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Definition
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Term
| The potential for auditory deprivation should be considered when deciding between a monaural versus a binaural hearing aid fitting. |
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Definition
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Term
| For individuals with a conductive hearing loss, a medium level CT and CR around 2:1 is ideal. |
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Definition
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Term
| Syllabic compression should be used with all patients with sensorineural hearing loss. |
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Definition
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Term
| A compression ratio of 2:1 implies that |
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Definition
| for every 10 dB increase in input level, output increases by 5 dB. |
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Term
| A characteristic of a circuit employing compression limiting is a high compression threshold |
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Definition
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Term
| With syllabic compression, the goal is to increase the amplitude of the consonant in relation to the vowel |
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Definition
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Term
| If a hearing aid user's complaints point to high pitched sounds of high intensity being uncomfortably loud, the most sensible adjustment would be: |
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Definition
| increase in the high frequency channel compression ratio |
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Term
| If a hearing aid user's complaints point to high and low pitched sounds, from soft to high intensities, being too loud, the most sensible adjustment would be: |
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Definition
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Term
| If you choose "increase gain for soft sounds" within the fitting software, what is most likely happening behind the scenes? |
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Definition
| gain and compression ratio are both increased |
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Term
| Would this be considered Wide-Dynamic-Range-Compression? CT = 30, CR = 2:1, attack time short, release time long |
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Definition
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