Sammendrag
Previous research has shown that voicing can influence the
perception of consonant place of articulation (POA) in audiovisual
(AV) speech perception, although findings are
inconsistent and often differ with the use of background noise.
The prediction in the current study was that the AV
perception of voiced and voiceless stop consonant POA is
influenced by the differences in spectral distribution between
voiced and voiceless stops, a hypothesis not compatible with
the direction of the voicing effect shifting with different types
of noise. Fifteen young adults were tested using incongruent
AV stimuli that differed in POA, in a voiced and a voiceless
condition, applying the infrequently used babble noise as
background. As predicted participants used the auditory
modality to a greater extent identifying the POA of voiced
stops compared to voiceless stops. The more distinct spectral
distribution of the voiced stops may contribute to them being
more easily identified auditorily on the POA dimension than
the voiceless stops. The study extends previous research using
white noise, by demonstrating a consistent pattern of results in
babble noise.
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