Psychoacoustic and Phoneme Identification Measures in Cochlear-Implant and Normal-Hearing Listeners
| Autor: | Lorraine A. Delhorne, Charlotte M. Reed, Louis D. Braida, Raymond L. Goldsworthy |
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| Rok vydání: | 2013 |
| Předmět: |
Adult
Male Masking (art) Consonant medicine.medical_specialty Speech perception Adolescent Speech recognition Perceptual Masking Audiology Speech Acoustics Pitch Discrimination Young Adult Speech and Hearing Phonetics medicine Humans Correction of Hearing Impairment Psychoacoustics Hearing Loss Backward masking Aged Analysis of Variance Speech Intelligibility Recognition Psychology Articles Middle Aged Cochlear Implantation Electric Stimulation Noise Cochlear Implants Persons With Hearing Impairments Acoustic Stimulation Case-Control Studies Speech Perception Audiometry Pure-Tone Female Audiometry Speech Psychology |
| Zdroj: | Trends in Amplification. 17:27-44 |
| ISSN: | 1084-7138 |
| DOI: | 10.1177/1084713813477244 |
| Popis: | The purpose of this study is to identify precise and repeatable measures for assessing cochlear-implant (CI) hearing. The study presents psychoacoustic and phoneme identification measures in CI and normal-hearing (NH) listeners, with correlations between measures examined. Psychoacoustic measures included pitch discrimination tasks using pure tones, harmonic complexes, and tone pips; intensity perception tasks included intensity discrimination for tones and modulation detection; spectral-temporal masking tasks included gap detection, forward and backward masking, tone-on-tone masking, synthetic formant-on-formant masking, and tone in noise detection. Phoneme perception measures included vowel and consonant identification in quiet and stationary and temporally gated speech-shaped noise. Results on psychoacoustic measures illustrate the effects of broader filtering in CI hearing contributing to reduced pitch perception and increased spectral masking. Results on consonant and vowel identification measures illustrate a wide range in performance across CI listeners. They also provide further evidence that CI listeners obtain little to no release of masking in temporally gated noise compared to stationary noise. The forward and backward-masking measures had the highest correlation with the phoneme identification measures for CI listeners. No significant correlations between speech reception and psychoacoustic measures were observed for NH listeners. The superior NH performance on measures of phoneme identification, especially in the presence of background noise, is a key difference between groups. |
| Databáze: | OpenAIRE |
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