speech perception Flashcards
erber’s model
four levels auditory skill development
auditory hierarchy (easier to difficult)
awareness
discrimination
identification
comprehension
what’s important to pay attention to?
what we perceive and how we perceive it
can the auditory system react to all acoustic features in a sound wave?
no
is speech perception continuous or categorical?
categorical
cues perceived as fixed categories
how do we perceive speech sounds
categoires
continuous acoustic differences are perceived as distinct groups of sounds
voice onset time
in stop consonant period of time between release of airflow and voicing
30 ms
if VOT is longer than 30 msecs
voiced sound [ba]
if VOT is shorter than 30 msecs
voiceless [pa]
do vowels in isolation appear differently than CV
yes
does F2 emerge from particular point if consonant precedes the vowel?
yes
frequency patterns
helps to identify a large number of speech sounds
fricative frequency patterns
partial closure of vocal tract producing turbulence and noisy sound w/o formant structure.
over broad frequency
Active theories of speech perception
listener more active
speech perception involves aspects of speech production
how sounds in signals are produced
passive theories of speech perception
listener is passive
speech perception is sensory
reference to speech production is minor
