chapter 12 Flashcards
(32 cards)
how do we generate speech sounds?
respiration, phonation, articulation
respiration
air must be pushed out the lungs, through the trachea, and up the larynx
phonation
the process through which vocal folds are made to vibrate when air moves by them
vocal folds
a pair of elastic tissues that vibrate to create your voice
how do the vocal folds control pitch?
thickness of the vocal folds and stiffness of the vocal folds
articulation
the act or manner of producing a speech sound using the vocal tract
vocal tract
an airway above the larynx that is used as a filter to produce speech sounds
filtered
frequencies are going to be dampened
resonated
frequencies are going to be amplified
format
a resonance in the vocal tract
phonemes
the basic unit of sound that makes a meaningful difference in utterances in a given language
learning phonemes
not all languages have the same phonemes, which leads to considerable evidence that phoneme awareness is something that we are all born with, but we lose certain phonemes with experience
articulating speech sounds
involves closing or almost closing the most hit some manner, and there are three basic variables that affect which consonant sound is produced during speech
place of articulation
what part of the vocal tract is being used to obstruct airflow
manner of articulation
how much is the airflow obstructed
voicing
are you using your vocal folds to phonate
coarticulation
speech sounds vary according to other speech sounds that precede and follow due to successive speech sounds overlapping and blending into each other
the tongue has to adapt to make a transition from the previous phoneme to the current one
categorical perception
perception of different sensory stimuli as identical even though there is slight variation in the underlying physical stimuli, dividing a continuous physical variable into a discrete perception
mcgurk effect
play an auditory speech sound and simultaneously a video shows the sound being generated, resulting in participants hearing a third phoneme
what does the mcgurk effect tell us?
context is important in speech perception and visual image/context potently influences audition
crossmodal perception
when one sensory modality affects perception in another sensory modality
what brain areas are involved in speech perception?
broca and wernicke’s area
aphasia
impairment in speech production or comprehension (or both) that is caused by damage to the speech centers in the brain
broca’s area
damage to this brain region results in an expressive aphasia
the ability to understand speech is intact but the ability to produce speech is impaired