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Journal of the Acoustical
Society of America 85 (4), April 1989 1718-1725.
Duration
of frication noise required for identification of English fricatives
Allard Jongman
| Natural speech consonant-vowel
(CV) syllables ( [f, s, 0, s, v, z, o] followed by [i, u, a] ) were computer
edited to include 20-70 ms of their frication noise in 10-ms steps as measured
from their onset, as well as the entire frication noise. These stimuli,
and the entire syllables, were presented to 12 subjects for consonant identification.
Results show that the listener does not require the entire fricative-vowel
syllable in order to correctly perceive a fricative. The required frication
duration depends on the particular fricative, ranging from approximately
30 ms for [s, z] to 50 ms for [f, s, v], while [0, o] are identified with
reasonable accuracy in only the full frication and syllable conditions.
Analysis in terms of the linguistic features of voicing, place, and manner
of articulation revealed that fricative identification in terms of place
of articulation is much more affected by a decrease in frication duration
than identification in terms of voicing and manner of articulation. |
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