Amplification - Monaural vs. Binaural Flashcards

1
Q

If a person has HL in both ears, we will use _______ HAs for what two main reasons?

A

Binaural

1) better localization of sound sources
2) better understanding of speech in noise

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2
Q

How does binaural HAs give better localization of sound sources?

A

The CNS compares time and intensity cues to determine where the sound is coming from

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3
Q

How does binaural HAs give better understanding of speech in noise?

A

The “binaural squelch” effects can better seperate a signal from noise when it comes to both ears

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4
Q

Aside from better localization, what are 2 more reasons for binaural HAs?

A

1) “head shadow” effect

2) less overall gain

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5
Q

What is the “head shadow” effect

A

Person can hear equally well from both sides of the head

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6
Q

Why is less gain overall needed with binaural (rather than monaural) fittings?

A

The binaural summation effect, the sound from each sides add together to be louder

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7
Q

If a person has HL in just one ear what do we do?

A

Typically, fit one HA and follow normal procedure

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8
Q

What is a special case when someone as unilateral HL and we dont do monaural fittings?

A

The HL is too sever, and the combo of its degree and its distortion is too great

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9
Q

What are 3 types of people that should not be overlooked as HA candidates?

A

1) have difficulty with localization
2) difficulty in noise
3) difficulty when signal is on bad side

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10
Q

Research reported ___% of children with one normal and one unaidable ear did what?

A

35%

Failed at least one grade (10x the normal rate)

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