Design of a portable microprocessor-based International Phonetic Alphabet (IPA) text-to-speech conversion device for use by the speech impaired

dc.contributor.advisor Curran S. Swift
dc.contributor.author Ishii, Dexter
dc.contributor.department Chemical and Biological Engineering
dc.date 2018-08-15T06:06:53.000
dc.date.accessioned 2020-07-02T06:11:56Z
dc.date.available 2020-07-02T06:11:56Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 1989
dc.date.issued 1989
dc.description.abstract <p>A portable microprocessor-based alternate communication device was designed and a prototype fabricated. This device allows speech impaired individuals, whose language skills remain intact, to input and edit an utterance of unrestricted vocabulary via a keyboard/LCD display system. The utterance, which is specified using the International Phonetic Alphabet (IPA), is then converted into an appropriate set of speech synthesizer parameters, using context sensitive rules. An interrupt driven system is used to pass each set of parameters, in order and at the appropriate time, to the synthesizer, thus generating an audible output;Tests conducted using the device in its present state have shown the utterance specification process to be slower than desired and the speech produced to be rather robotic in nature. Although understanding the speech generated is sometimes a problem, intelligibility improves with time as the listener becomes used to the synthesized speech and the programmer's ability to specify the utterance improves;As the current implementation does not include rules that vary the suprasegmental features, it is anticipated that the introduction of such rules will improve the quality and intelligibility of the speech output. Further suggestions for future development are provided, and focus on expediting the utterance specification process and improving the quality of the speech generated.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/rtd/9202/
dc.identifier.articleid 10201
dc.identifier.contextkey 6355632
dc.identifier.doi https://doi.org/10.31274/rtd-180813-9046
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/9202
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/82276
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/rtd/9202/r_8920147.pdf|||Sat Jan 15 02:30:02 UTC 2022
dc.subject.disciplines Biomedical Engineering and Bioengineering
dc.subject.disciplines Electrical and Computer Engineering
dc.subject.keywords Biomedical engineering
dc.subject.keywords Electrical engineering and computer engineering
dc.subject.keywords Computer engineering
dc.title Design of a portable microprocessor-based International Phonetic Alphabet (IPA) text-to-speech conversion device for use by the speech impaired
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication 86545861-382c-4c15-8c52-eb8e9afe6b75
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
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