Shared Flashcard Set

Details

Audiology/Salus-Hearing Aid Technologies
Hearing Aid Technologies
28
Other
Professional
07/13/2009

Additional Other Flashcards

 


 

Cards

Term
Sufficient evidence exists to state that directional microphone technology provides benefit for most hearing aid users in background noise. T/F
Definition
True
Term
Sufficient evidence exists to state that digital sound processing alone significantly increases speech intelligibility in all types of background noise. T/F
Definition
False
Term
Spectral subtraction is more effective for steady state, environmental noises as opposed to speech noise. T/F
Definition
True
Term
Noise reduction strategies, such as spectral subtraction, are possible with conventional analog technology. T/F
Definition
False
Term
All potential hearing aid users require hearing aids that incorporate signal processing to reduce background noise. T/F
Definition
False
Term
A large vent can reduce the effectiveness of a directional microphone. T/F
Definition
True
Term
The long-term specturm and amplitude of background noise is always different from the target speaker. T/F
Definition
False
Term
If the sampling frequency equals the highest frequency present in the incoming signal, aliasing will not occur. T/F
Definition
False
Term
Microphone mismatch will decrease the effectiveness of a directional microphone. T/F
Definition
True
Term
One example of attempting to enhance the intelligibility of speech is syllabic compression. T/F
Definition
True
Term
Directional microphone technology is not available as an option with conventional analog hearing aids. T/F
Definition
False
Term
The automatic program selection feature available on some high end products will select the program the user deams appropriate 99% of the time. T/F
Definition
False
Term
Feedback reduction on advanced digital products is accomplished by reducing overall gain at all frequencies whenever feedback is detected. T/F
Definition
False
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. T/F
Definition
True
Term
If both devices have an omnidirectional microphone only, a CIC hearing aid will demonstrate greater directionality than a BTE hearing aid. T/F
Definition
True
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. T/F
Definition
False
Term
Deficits in frequency resolution will likely not impact an individual's aided ability to understand speech in noise. T/F
Definition
False
Term
If an individual has poor temporal resolution, he or she might demonstrate deficits in perceiving gaps in noise. T/F
Definition
True
Term
An individual with hearing loss and complete recruitment and an individual with normal hearing would likely rate the loudness of high intensity sounds similarly. T/F
Definition
True
Term
All individuals with severe sensorineural hearing loss should be fitted with hearing aids using linear processing. T/F
Definition
False
Term
A single-channel hearnig aid is likely appropriate for a mild to severe, sloping SNHL. T/F
Definition
False
Term
If hearing aids restore audibility of all speech sounds, the user will always demonstrate normal aided functioning. T/F
Definition
False
Term
Expansion should be used sparingly as it has a major impact on the audibity of conversational level speech. T/F
Definition
False.
It affects soft level sounds.
Term
The potential for auditory deprivation should be considered when deciding between a monaural versus a binaural hearing aid fitting. T/F
Definition
True
Term
The majority of linear hearing aids use peak clipping for output limiting purposes. T/F
Definition
False
Term
In addition to loss of audibility, elderly individuals with hearing loss may demonstrate what four audiological characteristics?
Definition
reduced temporal resolution; cognitive deficits that affect speech understanding; central auditory pathology that affects speech understanding; deficits in frequency resolution
Term
A severe SNHL would likely be accompanied by what perceptual changes? (3 things)
Definition
loss of sensitivity for low and mid intensity sounds; deficits in frequency resolution; decrease in dynamice range
Term
A pt with high freq. cochlear dead regions would likely have what two perceptual changes?
Definition
reduced freq. resolution; problems in background noise
Supporting users have an ad free experience!