Phonemic restoration of interrupted locally time-reversed speech
| Autor: | Kazuo Ueda, Valter Ciocca |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Linguistics and Language
medicine.medical_specialty Short Report Experimental and Cognitive Psychology Audiology Intelligibility (communication) Pink noise 050105 experimental psychology Language and Linguistics 03 medical and health sciences Cognition 0302 clinical medicine medicine Humans Interrupted speech 0501 psychology and cognitive sciences Noise filling Mathematics 05 social sciences Locally time-reversed speech Sensory Systems Noise Duration (music) Speech intelligibility Phonemic restoration Speech Perception 030217 neurology & neurosurgery |
| Zdroj: | Attention, Perception & Psychophysics |
| ISSN: | 1943-393X 1943-3921 |
| DOI: | 10.3758/s13414-021-02292-3 |
| Popis: | Intelligibility of temporally degraded speech was investigated with locally time-reversed speech (LTR) and its interrupted version (ILTR). Control stimuli comprising interrupted speech (I) were also included. Speech stimuli consisted of 200 Japanese meaningful sentences. In interrupted stimuli, speech segments were alternated with either silent gaps or pink noise bursts. The noise bursts had a level of − 10, 0 or + 10 dB relative to the speech level. Segment duration varied from 20 to 160 ms for ILTR sentences, but was fixed at 160 ms for I sentences. At segment durations between 40 and 80 ms, severe reductions in intelligibility were observed for ILTR sentences, compared with LTR sentences. A substantial improvement in intelligibility (30–33%) was observed when 40-ms silent gaps in ILTR were replaced with 0- and + 10-dB noise. Noise with a level of − 10 dB had no effect on the intelligibility. These findings show that the combined effects of interruptions and temporal reversal of speech segments on intelligibility are greater than the sum of each individual effect. The results also support the idea that illusory continuity induced by high-level noise bursts improves the intelligibility of ILTR and I sentences. Supplementary Information The online version contains supplementary material available at 10.3758/s13414-021-02292-3. |
| Databáze: | OpenAIRE |
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