Weighting of Static and Transition Cues in Voiceless Fricatives and Stops in Children Wearing Cochlear Implants
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Objectives. To determine how normal-hearing adults (NHA), normal-hearing children (NHC) and children wearing cochle- ar implants (CI) differ in the perceptual weight given cues for fricative consonants (having a comparatively long static cue and short transition cue) versus stop consonants (having a comparatively short static cue and long transition cue). Methods. Ten NHA, eleven 5- to 8-year-old NHC and eight 5- to 8-year-old children wearing CI were participated. Frica- tive /su/-/∫u/ and stop /pu/-/tu/ continua were constructed by varying the fricative/burst cue and the F2 onset transi- tion cue. A quantitative method of analysis (analysis of variance model) was used to determine cue weighting and measure cue interaction within groups. Results. For the fricative consonant, all groups gave more weight to the frication spectral cue than to the formant transition. For the voiceless stop consonant, all groups gave more weight to the transition cue than to the burst cue. The CI group showed similar cue weighting strategies to age-matched NHC, but integration of cues by the CI group was not significant. Conclusion. All groups favored the longer-duration cue in both continua to make phonemic judgments. Additionally, devel- opmental patterns across groups were evident. Results of the current study may be used to guide development of CI devices and in efforts to improve speech and language of children wearing CIs.
Abstract
Objectives. To determine how normal-hearing adults (NHA), normal-hearing children (NHC) and children wearing cochle- ar implants (CI) differ in the perceptual weight given cues for fricative consonants (having a comparatively long static cue and short transition cue) versus stop consonants (having a comparatively short static cue and long transition cue). Methods. Ten NHA, eleven 5- to 8-year-old NHC and eight 5- to 8-year-old children wearing CI were participated. Frica- tive /su/-/∫u/ and stop /pu/-/tu/ continua were constructed by varying the fricative/burst cue and the F2 onset transi- tion cue. A quantitative method of analysis (analysis of variance model) was used to determine cue weighting and measure cue interaction within groups. Results. For the fricative consonant, all groups gave more weight to the frication spectral cue than to the formant transition. For the voiceless stop consonant, all groups gave more weight to the transition cue than to the burst cue. The CI group showed similar cue weighting strategies to age-matched NHC, but integration of cues by the CI group was not significant. Conclusion. All groups favored the longer-duration cue in both continua to make phonemic judgments. Additionally, devel- opmental patterns across groups were evident. Results of the current study may be used to guide development of CI devices and in efforts to improve speech and language of children wearing CIs.
참고문헌 (25)
- Walley AC, "Onset spectra and formant transitions in the adult’s and child’s perception of place of articulation in stop consonants", J Acoust Soc Am, 73(3), pp.1011~1022 (1983)
- Morrongiello BA, "Trading relations in the perception of speech by 5-year-old children", J Exp Child Psychol, 37(2), pp.231~250 (1984)
- Hazan V, "Individual variability in the perception of cues to place contrasts in initial stops", Percept Psychophys, 49(2), pp.187~200 (1991)
- Nittrouer S., "Age-related differences in perceptual effects of formant transitions within syllables and across syllable boundaries", J Phon, 20(3), pp.351~382 (1992)
- Nittrouer S, "Learning to perceive speech: how fricative perception changes, and how it stays the same", J Acoust Soc Am, 112(2), pp.711~719 (2002)
- Sussman JE, "Perception of formant transition cues to place of articulation in children with language impairments", J Speech Hear Res, 36(6), pp.1286~1299 (1993)
- Sussman JE, "Vowel perception by adults and children with normal language and specific language impairment: based on steady states or transitions?", J Acoust Soc Am, 109(3), pp.1173~1180 (2001)
- Ohde RN, "Stop-consonant and vowel perception in 3- and 4-year old children", J Acoust Soc Am, 102(6), pp.3711~3722 (1997)
- Dorman MF, "Channels, children and the mulitisyllabic lexical neighborhood test (MLNT)", 39th Annual NIH Neural Prosthesis Workshop (1998)
- Eisenberg LS, "Speech recognition with reduced spectral cues as a function of age", J Acoust Soc Am, 107(5 Pt 1), pp.2704~2710 (2000)
- Nittrouer S, "Dynamic spectral structure specifies vowels for children and adults", J Acoust Soc Am, 122(4), pp.2328~2339 (2007)
- Carney AE, "Treatment of efficacy: hearing loss in children", J Speech Lang Hear Res, 41(1), pp.S61~S84 (1998)
- Pittman AL, "Perception of voiceless fricatives by normal-hearing and hearing-impaired children and adults", J Speech Lang Hear Res, 43(6), pp.1389~1401 (2000)
- Hedrick M, "Weighting of cues for fricative place of articulation perception by children wearing cochlear implants", Int J Audiol, 50(8), pp.540~547 (2011)
- Nittrouer S, "The role of early language experience in the development of speech perception and language processing abilities in children with hearing loss", Volta Rev, 103(1), pp.5~37 (2001)
- Hedrick M, "Perceptual weighting of relative amplitude and formant transition cues in aided CV syllables", J Speech Lang Hear Res, 44(5), pp.964~974 (2001)
- Mayo C, "Adult-child differences in acoustic cue weighting are influenced by segmental context: children are not always perceptually biased toward transitions", J Acoust Soc Am, 115(6), pp.3184~3194 (2004)
- "Guidelines for manual pure-tone threshold audiometry" (2005)[URL]
- Semel E, "Clinical Evaluation of Lanugage Fundamentals®" (2003), Pearson
- Klatt DH, "Software for a cascade", parallel formant synthesizer, 1980, pp.67(3), 971~995
- Hedrick MS, "Perceptual weighting of stop consonant cues by normal and impaired listeners in reverberation versus noise", J Speech Lang Hear Res, 50(2), pp.254~269 (2007)
- Parnell MM, "Maturational influences on perception of coarticulatory effects", J Speech Hear Res, 21(4), pp.682~701 (1978)
- Ohde RN, "A developmental study of the perception of onset spectra for stop consonants in different vowel environments", J Acoust Soc Am, 97(6), pp.3800~3812 (1995)
- Hedrick MS, "Effect of relative amplitude and formant transitions on perception of place of articulation by adult listeners with cochlear implants", J Speech Lang Hear Res, 40(6), pp.1445~1457 (1997)
- Hedrick MS, "Labeling of", s, ∫, pp.by listeners with normal and impaired hearing, revisited, J Speech Lang Hear Res[DOI]
