Is a measure of sound pressure (dB SPL), over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones
What is equal loudness contours
100
What does REAR mean?
What is real ear aided response
100
What does BAHA stand for?
bone anchored hearing aid
100
This term expresses speech clarity
What is articulation index
100
What does IL stand for?
What is intensity level
200
A fitting uses one hearing instrument on either the left or the right ear
What is monaural?
200
What does REOR stand for?
What is real ear occluded response?
200
A hearing device which is utilized when patients have a dead ear. A receiver is placed in the dead ear and transmitted to the hearing ear.
What is BICROS
200
A ratio between two intensities
What is a decibel
200
What is a phon?
What is compares the loudness of a sound at one frequency to the sound loudness at a different frequency
300
The head blocks sound arriving from the unamplified side, causing high frequency attenuation.
What is Head shadow effect?
300
3 disadvantages of CIC/IIC fitting
What is feedback due to mandibular joint movement
size limitation, inability to manipulate the hearing aid
More battery changes
increased feedback
300
Uses one body worn hearing instrument with a cord and a received and ear molds in each ear. Thresholds must be symmetrical.
What is bilateral Y cord
300
What medium can sound not travel in?
What is a vacuum
300
What are our ear mold made out of?
What is silicone and Lucite
400
This occurs when prolonged use of amplification to one ear. The ear without amplification loses its ability to discriminate.
What is auditory deprivation?
400
Give three advantages of CIC/IIC fittings?
What is Reduction of the occlusion effect
increase in high frequency emphasis
gain reduction
reduction of feedback
undistorted output
decrease in wind noise
400
Give me two contraindications for binaural fittings?
Poor binaural fusion
dynamic range is smaller in one ear
UCL very low in one ear
Diplacusis
Reduced dynamic range
400
The perception of the patient's own voice being louder, scratchy and unpleasant.
What is occlusion effect
400
what do mels measure?
What is pitch
500
Requires the use of two hearing instruments, one on each ear.
What is binaural fitting?
500
a patient who perceives a different pitch on each ear (poor binaural candidate)
What is Diplacusis?
500
What is the difference between analog and digital hearing aids?
analog is simply a amplifier or sound.
Digital breaks down sound into components, alters it in a digital format and converts it back to analog.