The role of continuous low-frequency harmonicity cues for interrupted speech perception in bimodal hearing
| Autor: | Soo Hee Oh, Ying-Yee Kong, Gail S. Donaldson |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Speech Communication
Adult Periodicity Speech perception Sound Spectrography Time Factors Acoustics and Ultrasonics Adolescent Computer science Acoustics Speech recognition Perceptual Masking Intelligibility (communication) Stimulus (physiology) 01 natural sciences Speech Acoustics 03 medical and health sciences Young Adult 0302 clinical medicine Arts and Humanities (miscellaneous) Phonetics 0103 physical sciences medicine otorhinolaryngologic diseases Humans 030223 otorhinolaryngology 010301 acoustics medicine.diagnostic_test Speech Intelligibility Speech processing Cochlear Implantation Electric Stimulation Cochlear Implants Persons With Hearing Impairments Acoustic Stimulation Speech Perception Audiometry Syllable Cues Audiometry Speech Noise |
| Popis: | Low-frequency acoustic cues have been shown to enhance speech perception by cochlear-implant users, particularly when target speech occurs in a competing background. The present study examined the extent to which a continuous representation of low-frequency harmonicity cues contributes to bimodal benefit in simulated bimodal listeners. Experiment 1 examined the benefit of restoring a continuous temporal envelope to the low-frequency ear while the vocoder ear received a temporally interrupted stimulus. Experiment 2 examined the effect of providing continuous harmonicity cues in the low-frequency ear as compared to restoring a continuous temporal envelope in the vocoder ear. Findings indicate that bimodal benefit for temporally interrupted speech increases when continuity is restored to either or both ears. The primary benefit appears to stem from the continuous temporal envelope in the low-frequency region providing additional phonetic cues related to manner and F1 frequency; a secondary contribution is provided by low-frequency harmonicity cues when a continuous representation of the temporal envelope is present in the low-frequency, or both ears. The continuous temporal envelope and harmonicity cues of low-frequency speech are thought to support bimodal benefit by facilitating identification of word and syllable boundaries, and by restoring partial phonetic cues that occur during gaps in the temporally interrupted stimulus. |
| Databáze: | OpenAIRE |
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