Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
|
What is an audiometer?
|
electronic instrument used by audiologists to quantify hearing
|
|
|
What does an audiometer produce?
|
pure tones, various frequencies, various intensities, various transducers
|
|
|
What are the three main components of the audiometer?
|
oscillator, attenuator, interruption switch
|
|
|
Which component does this define.."intensity selector dial or push button"?
|
attenuator
|
|
|
Which component does this define..."usually off for pure tone testing and controls the duration of the sound"?
|
interruption switch
|
|
|
Which component does this define.."frequency selector switch"?
|
oscillator
|
|
|
What are two types of audiometers?
|
automatic or manual
|
|
|
What are three other features of the audiometer?
|
two channels, stimulus selector, transducer selector
|
|
|
What types of signals can choose using the signal or stimulus selector?
|
tape, CD, microphone, tone to present pure tones
|
|
|
Why does an audiometer have two channels?
|
so the audiologist can deliver stimulus to one ear, while sending a different stimulus to the opposite
|
|
|
What is a transducer?
|
device that converts energy to another (earphone, mic)
|
|
|
What are the options for a transducer?
|
phone, bone, speaker
|
|
|
What is a VU meter?
|
it is a volume units meter that is used to monitor input level of the signal being delivered
|
|
|
What are the three types of earphones?
|
insert, supraaural, circum aural
|
|
|
what are three advantages of using insert earphones?
|
no collapsing ear canal, reduce need for masking, stability of sound delivered to ear
|
|
|
What do you do if the after calibration, the range is outside the tolerance limits?
|
get equipment recalibrated and use correction factor
|
|
|
What are two types of equipment needed to perform calibration?
|
Sound level meter and coupler or artificial ear or artificial mastoid
|
|
|
What are four steps to do for a visual inspection of an audiometer?
|
check power cord, check earphone cords, earphone cushion, control panel
|
|
|
What are 6 steps to do for a listening inspection of an audiometer?
|
present tones at each frequency, move cords, listen for cross talk, listen for smooth attenuation, listen for expected changes in frequency, check hearing of person with known thresholds
|
|
|
When speech is clear, phonemes are....
|
clearly formed
|
|
|
When speech is clear, vowel formant space is...
|
expanded
|
|
|
When speech is clear, stops are released...
|
more often
|
|
|
When speech is clear, consonant-vowel ratio is...
|
increased
|
|
|
When speech is clear,continuant consonants are...
|
longer
|
|
|
When speech is clear, intelligibility increases by...
|
17-20%
|
|
|
Advantage of clear speech increases as...
|
background noise increases
|
