Abstract
This study examines the relative importance of pitch and periodicity to Chinese speech recognition by normal-hearing subjects listening to a cochlear implant simulation. Three carrier band conditions were tested, each of which provided different amounts of pitch and periodicity information: 1) noise-band carriers for all speech segments, 2) pulse train carriers for voiced speech segments, in which the rate followed the fundamental frequency (F0) of the speech signal, and 3) fixed-rate (150 Hz) pulse train carriers for voiced speech segments. The noise-band carriers preserved little pitch and periodicity information, as all temporal cues were limited by the 50-Hz temporal envelope extracted from each frequency band, The K)-controlled pulse train carriers preserved all pitch and periodicity information. The fixed-rate pulse train carriers preserved periodicity information, but no pitch information. Results showed that different carriers produced significantly different amounts of Chinese speech recognition, with the F0-controlled pulse train carriers producing the best performance. These results reflect the need to deliver adequate amounts of both pitch and periodicity information to Chinese-speaking cochleae implant patients.
Original language | English (US) |
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Title of host publication | ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings |
Volume | 4 |
State | Published - 2004 |
Externally published | Yes |
Event | Proceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing - Montreal, Que, Canada Duration: May 17 2004 → May 21 2004 |
Other
Other | Proceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing |
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Country/Territory | Canada |
City | Montreal, Que |
Period | 5/17/04 → 5/21/04 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Signal Processing
- Acoustics and Ultrasonics