Influence of Consonant-Vowel Intensity Ratio on Speech Perception for Hearing Impaired Listeners

Shobha, N. H.; Thomas, T.G.; Subbarao, K.T.V

doi:10.1109/cisp.2008.126

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…For example, near-normal AN-fiber onset rates are seen following NIHL for tones at equal sensation levels (Scheidt et al, 2010). These results are consistent with psychoacoustic studies that report improved speech recognition by listeners with HI when consonants are selectively amplified (Kennedy et al, 1998;Shobha et al, 2008) and highlight the importance of compressive gain control in hearing aids (Jenstad et al, 2000;Souza, 2016).…”

Section: Discussionsupporting

confidence: 83%

Distorted Tonotopy Severely Degrades Neural Representations of Connected Speech in Noise following Acoustic Trauma

Parida

Heinz

2022

J. Neurosci.

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Listeners with sensorineural hearing loss (SNHL) struggle to understand speech, especially in noise, despite audibility compensation. These real-world suprathreshold deficits are hypothesized to arise from degraded frequency tuning and reduced temporal-coding precision; however, peripheral neurophysiological studies testing these hypotheses have been largely limited to in-quiet artificial vowels. Here, we measured single auditory-nerve-fiber responses to a connected speech sentence in noise from anesthetized male chinchillas with normal hearing (NH) or noise-induced hearing loss (NIHL). Our results demonstrated that temporal precision was not degraded following acoustic trauma, and furthermore that sharpness of cochlear frequency tuning was not the major factor affecting impaired peripheral coding of connected speech in noise. Rather, the loss of cochlear tonotopy, a hallmark of NH, contributed the most to both consonant-coding and vowel-coding degradations. Because distorted tonotopy varies in degree across etiologies (e.g., noise exposure, age), these results have important implications for understanding and treating individual differences in speech perception for people suffering from SNHL.

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Section: Discussionsupporting

confidence: 83%

Distorted Tonotopy Severely Degrades Neural Representations of Connected Speech in Noise following Acoustic Trauma

Parida

Heinz

2022

J. Neurosci.

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“…It is satisfying to note that the CVR modification plays an important role in surmounting some of the speech recognition difficulties of hearing impaired listeners. The present paper on fricatives and the previous paper on plosives [7] in this area have shown much promise. There is still more work to be done as we need to examine more traits of human clear speech [5,6] in the forthcoming work.…”

Section: Discussionmentioning

confidence: 78%

“…Based on the results of our present investigation and previous investigation [7], CVR enhancement has positive impact on speech intelligibility. These two papers have revealed some noteworthy points on the perception of fricatives and plosives in noise.…”

Section: Test Cv6: Consonant Voicing and Place Of Articulation Comparmentioning

confidence: 71%

“…Following the line of research, the present study sought to evaluate the effect of CVR modification on consonant recognition for speech in noise. Our previous paper [7] with synthesized plosives has suggested significant improvement in intelligibility and has prompted us for the current work. We have employed synthetic stimuli instead of the recorded speech, as the manipulation of the spectral, temporal and intensity characteristics would be more efficient and also it would be easier to alter the acoustic segments independently.…”

Section: Introductionmentioning

confidence: 98%

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Role of Clear Speech Attribute on Fricatives Perception for the Hard of Hearing

Shobha

Thomas

Subbarao

2008

2008 International Conference on Audio, Language and Image Processing

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In difficult listening environments or when a listener's dynamic range is severely reduced, speech recognition becomes a challenging task. One way to alleviate this difficulty is to speak 'clearly' as opposed to 'conversationally' to these individuals [5,6]. Clear speech has an intelligibility advantage over typical slow speech on account of some special attributes. The present study was specifically concerned with the effect of one such acoustic attribute of clear speech -'Consonant-Vowel intensity ratio', on speech perception. A case for synthetic clear speech in the context of hearing impairment was constituted. Fricatives of English language with cardinal vowels-/a i u/, were additively mixed with comb-filtered white noise at three SNRs. Computerized test administration system was developed to study the responses of five listeners. The perceptual analysis was accomplished in terms of information transmission analysis measures. The overall information transmission and transmission of consonant features have reported appreciable improvement. Under adverse noise masking condition (SNR=6 dB), the maximum intelligibility benefit of 24% points and 38% points were reported with two testing procedures.

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Automated Detection of Transition Segments for Intensity and Time-Scale Modification for Speech Intelligibility Enhancement

Jayan

Pandey

Lehana

2008

2008 International Conference on Signal Processing, Communications and Networking

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Influence of Consonant-Vowel Intensity Ratio on Speech Perception for Hearing Impaired Listeners

Cited by 3 publications

References 7 publications

Distorted Tonotopy Severely Degrades Neural Representations of Connected Speech in Noise following Acoustic Trauma

Distorted Tonotopy Severely Degrades Neural Representations of Connected Speech in Noise following Acoustic Trauma

Role of Clear Speech Attribute on Fricatives Perception for the Hard of Hearing

Automated Detection of Transition Segments for Intensity and Time-Scale Modification for Speech Intelligibility Enhancement

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