Spectral modulation detection and vowel and consonant identification in normal hearing and cochlear implant listeners
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منابع مشابه
Psychoacoustic and phoneme identification measures in cochlear-implant and normal-hearing listeners.
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 ...
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Spectral peak resolution was investigated in normal hearing (NH), hearing impaired (HI), and cochlear implant (CI) listeners. The task involved discriminating between two rippled noise stimuli in which the frequency positions of the log-spaced peaks and valleys were interchanged. The ripple spacing was varied adaptively from 0.13 to 11.31 ripples/octave, and the minimum ripple spacing at which ...
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Spectral resolution has been reported to be closely related to vowel and consonant recognition in cochlear implant (CI) listeners. One measure of spectral resolution is spectral modulation threshold (SMT), which is defined as the smallest detectable spectral contrast in the spectral ripple stimulus. SMT may be determined by the activation pattern associated with electrical stimulation. In the p...
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Two experiments were conducted to test the hypothesis that listeners would modify perceptual strategies for phonetic identification if the spectrum of a speech signal was degraded. The contrasts between tense and lax vowels and between word-final s/z were selected because of the primacy of spectral cues and redundancy of temporal cues used in normal listening situations. In the first experiment...
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Cochlear implant (CI) users show substantial individual differences in their ability to understand speech. Even the most successful CI users do not understand speech as well as normal hearing listeners. One explanation for these individual differences and limited speech perception abilities lies in their difficulty in discriminating or identifying spectral cues (e.g., formant frequencies; Tong ...
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