Measuring consonant identification in nonsense syllables, words, and sentences

Woods, David L.; Yund, E. William; Herron, Timothy J.

doi:10.1682/jrrd.2009.04.0040

Cited by 23 publications

(35 citation statements)

References 42 publications

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“…It uses the signal detection measure d to quantify the SNRs necessary to identify each of 20 leading and 20 trailing consonants. In previous studies, we demonstrated that consonants differ substantially in the SNRs required for their identification [16]. Group A consonants (/ʃ/, /ʧ/, /t/, /s/, /z/, /ʤ/, and /r/) in isolated syllables are accurately identified at SNRs near 0 dB, i.e., similar to the SNRs obtained in sentence reception threshold (SeRT) testing of YNH subjects.…”

supporting

confidence: 74%

“…Consonant identification is more accurate in words than nonsense syllables for YNH subjects [16]. If ONH subjects showed reduced lexicality benefits, it would contribute to age-related differences in overall consonant identification thresholds.…”

Section: Lexicality Effectsmentioning

confidence: 92%

“…Each subject underwent three testing sessions over 3 to 11 d. The results from the YNH subjects have been reported in detail elsewhere [16][17]. Figure 1 shows the audiograms for the subject groups.…”

Section: Subjectsmentioning

confidence: 99%

“…The CaST [16][17] includes 1,200 CVC syllables containing 20 leading consonants, 20 coda consonants, and 3 vowels (//, /ɪ/, /u/) that are exhaustively combined to create 1,200 different tokens (20 × 3  20). Nineteen of the consonants (/p/, /t/, /k/, /f/, //, /s/, /ʃ/, /ʧ/, /b/, /d/, /g/, /v/, /ð/, /z/, /ʤ/, /m/, /n/, /l/, and /r/) occur in leading and coda syllable positions, /h/ occurs only as a leading consonant, and // only as a coda.…”

Section: Syllable Tokensmentioning

confidence: 99%

“…In experiment 1, we used the California Syllable Test (CaST) [16][17] to compare consonant identification in younger subjects with normal hearing (YNH) and ONH subjects. The CaST measures the signal-to-noise ratio (SNR) required to identify consonants in consonantvowel-consonant (CVC) syllables presented in speech spectrum noise.…”

mentioning

confidence: 99%

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Age-related changes in consonant and sentence processing

Woods

Doss²,

Herron³

et al. 2012

JRRD

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Abstract-Speech understanding in noise declines with age, even in older subjects with normal hearing (ONH). These agerelated declines could reflect reductions in phonological processing ability or impairments in semantic and lexical processing required for sentence understanding. In experiment 1, we used the California Syllable Test (CaST) to examine age-related changes in the ability of subjects to identify consonants in consonant-vowel-consonant syllables in noise. ONH subjects showed impaired performance in comparison with younger subjects with normal hearing, particularly for hard-to-identify consonants, but otherwise showed similar influences of consonant position, lexicality, and vowel nuclei. Regression analyses showed that CaST performance was independently affected by both age and audiometric thresholds. In experiment 2, we examined sentence reception thresholds (SeRTs) using the Quick Speech in Noise Test and Hearing in Noise Test. No significant age-related changes in SeRTs were observed for either test. SeRT preservation in ONH subjects appeared to reflect the ageresistant ability to identify easy consonants in noise as well as intact top-down contextual and lexical processing. These results establish benchmark values that can be used to evaluate the success of audiological rehabilitation in older subjects with hearing impairment.

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supporting

confidence: 74%

Section: Lexicality Effectsmentioning

confidence: 92%

Section: Subjectsmentioning

confidence: 99%

Section: Syllable Tokensmentioning

confidence: 99%

mentioning

confidence: 99%

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Age-related changes in consonant and sentence processing

Woods

Doss²,

Herron³

et al. 2012

JRRD

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Effects of sensorineural hearing loss on temporal coding of narrowband and broadband signals in the auditory periphery

Henry

Heinz

2013

Hearing Research

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People with sensorineural hearing loss have substantial difficulty understanding speech under degraded listening conditions. Behavioral studies suggest that this difficulty may be caused by changes in auditory processing of the rapidly-varying temporal fine structure (TFS) of acoustic signals. In this paper, we review the presently known effects of sensorineural hearing loss on processing of TFS and slower envelope modulations in the peripheral auditory system of mammals. Cochlear damage has relatively subtle effects on phase locking by auditory-nerve fibers to the temporal structure of narrowband signals under quiet conditions. In background noise, however, sensorineural loss does substantially reduce phase locking to the TFS of pure-tone stimuli. For auditory processing of broadband stimuli, sensorineural hearing loss has been shown to severely alter the neural representation of temporal information along the tonotopic axis of the cochlea. Notably, auditory-nerve fibers innervating the high-frequency part of the cochlea grow increasingly responsive to low-frequency TFS information and less responsive to temporal information near their characteristic frequency (CF). Cochlear damage also increases the correlation of the response to TFS across fibers of varying CF, decreases the traveling-wave delay between TFS responses of fibers with different CFs, and can increase the range of temporal modulation frequencies encoded in the periphery for broadband sounds. Weaker neural coding of temporal structure in background noise and degraded coding of broadband signals along the tonotopic axis of the cochlea are expected to contribute considerably to speech perception problems in people with sensorineural hearing loss.

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Consonant discrimination by Mandarin-speaking children with prelingual hearing impairment

Zhu

Wong

Chen

et al. 2015

International Journal of Pediatric Otorhinolaryngology

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Consonant discrimination performance of children with profound HI was poorer than those with moderate to severe HI. The ability to discriminate consonant pairs seems to depend on age of acquisition of the consonants. Although the age of first HA fitting and the duration of HA use were not correlated with consonant discrimination outcomes, this finding does not preclude the importance of early HA fitting.

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Measuring consonant identification in nonsense syllables, words, and sentences

Cited by 23 publications

References 42 publications

Age-related changes in consonant and sentence processing

Age-related changes in consonant and sentence processing

Effects of sensorineural hearing loss on temporal coding of narrowband and broadband signals in the auditory periphery

Consonant discrimination by Mandarin-speaking children with prelingual hearing impairment

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