ausblenden:
Schlagwörter:
-
Zusammenfassung:
Listeners are continuously exposed to a broad range of speech rates. Earlier work has shown that listeners perceive phonetic category boundaries relative to contextual speech rate. This process of rate
-
dependent speech perception has been suggested to occu
r
across talker
changes, with the speech
rate of talker A influencing
perception of talker B.
This study tested
whether
a
‘
global
’
speech rate calcu
lated over multiple talkers and
over a
longer period of
time affected perception of the
temporal
Dutch vowel
contrast
/
ɑ
/
-
/a:/.
First,
Experiment 1
demonstrated
that listeners more often reported
hearing
long /a:/
in fast
contexts
than in
‘neutral
rate
’
contexts
, replicating
earlier
findings.
Then, i
n Experiment 2, one
participant
group
was exposed to
‘neutral’
speech from talker A
intermixed
with
slow speech from talker
B. Another group listened to the same ‘neutral’
speech from
talker
A, but to fast speech from
talker
B.
Between
-
group comparison in the ‘neutral’ condition
revealed that Group 1 reported
more long /a:/ tha
n Group 2, indicating
that
A’s
‘neutral’
speech
sounded faster
when B was
slower.
Finally,
Experiment 3 tested whether
talking at slow or fast rates
oneself
elicits the
same ‘global’ rate effects.
However,
no
evidence
was found
that
self
-
produced speech
modulated
perception of talker A
.
Th
is study
corroborate
s
the idea that
‘global’
rate
-
dependent
effects
occur across t
alkers
,
but
are insensitive to
one’s own speech rate
. Results
are interpreted in light of
the general auditory mechanisms thought to underlie rate
normalization, with implications for our understanding of dialogue
