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Title
Two-Sentence Recognition with a Pulse Train Vocoder
Description
When listeners hear sentences presented simultaneously, the listeners are better able to discriminate between speakers when there is a difference in fundamental frequency (F0). This paper explores the use of a pulse train vocoder to simulate cochlear implant listening. A pulse train vocoder, rather than a noise or tonal vocoder, was used so the fundamental frequency (F0) of speech would be well represented. The results of this experiment showed that listeners are able to use the F0 information to aid in speaker segregation. As expected, recognition performance is the poorest when there was no difference in F0 between speakers, and listeners performed better as the difference in F0 increased. The type of errors that the listeners made was also analyzed. The results show that when an error was made in identifying the correct word from the target sentence, the response was usually (~60%) a word that was uttered in the competing sentence.
Date Created
2013-05
Contributors
- Stanley, Nicole Ernestine (Author)
- Yost, William (Thesis director)
- Dorman, Michael (Committee member)
- Liss, Julie (Committee member)
- Barrett, The Honors College (Contributor)
- Department of Speech and Hearing Science (Contributor)
- Hugh Downs School of Human Communication (Contributor)
Topical Subject
Resource Type
Extent
20 pages
Language
eng
Copyright Statement
In Copyright
Primary Member of
Series
Academic Year 2012-2013
Handle
https://hdl.handle.net/2286/R.I.16996
Level of coding
minimal
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System Created
- 2017-10-30 02:50:57
System Modified
- 2021-08-11 04:09:57
- 3 years 1 month ago
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