Speech perecption Flashcards
What is the purpose of speech perception?
To know and find meaning in what people are saying,
We must discriminate and recognize ____ and _____ features in speech perception.
Acoustic, phonetic.
4 major parts of the ear?
Outer, Middle, Inner, Neural Pathway
How does sound get converted?
From acoustic energy to mechanical energy.
Which part of the ear vibrates to kickstart mechanical energy?
The tympanic membrane
What are the 3 parts of the malleus?
head,
neck,
manubrium
What are the 3 parts of the incus?
body,
short crus,
long crus
5 parts of the stapes?
head
neck
base
ant crus
post crus
Function of tensor tympani?
opens eustachian tube, allowing equalization of pressure in the tympanic cavity
Function of stapedius?
prevents excessive oscillations of the stapes
Innervation of tensor tympani?
CN V
Innervation of stapedius?
CN VII
Acoustic/Stapedial Reflex?
Stapedius muscle applies a force to footplate of stapes, reducing amplitude of footplate’s movement, reducing sound pressure level reaching cochlea
Is acoustic reflex uni or bilateral?
bilateral
Intensity level that triggers acoustic reflex?
85dB SPL or more.
Describe frequencies for back vowels.
F1 and F2 are close in frequency
Brain perceives average of 1 & 2, + F3
Describe frequencies for front vowels.
F2 and F3 are close
Brain perceives F1 and average of 2 & 3
Describe the perception of consonants.
Greater variety
More rapid movements
Acoustic cues are more complex
Harder to distinguish _______ sounds than sounds at each end of phonetic boundary.
-Adjacent
Give an example of adjacent sounds.
/k/ /ki/ /ku/
/gu/ /gi//g/
What is coarticulation?
When the mouth shape prepares for the following sounds.
Can occur within 1 word or across multiple words depending on the rate of the speech
Example: Rounding lips in tulip, versus ticket for the /t/ phoneme, anticipating the following vowels
