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- Creators: Division of Teacher Preparation
- Status: Published
performance is limited by poor spectral resolution. Acoustic CI simulation has been widely used
in normal-hearing (NH) listeners to study the effect of spectral resolution on speech perception,
while avoiding patient-related confounds. It is unclear how speech production may change with
the degree of spectral degradation of auditory feedback as experience by CI users. In this study,
a real-time sinewave CI simulation was developed to provide NH subjects with auditory
feedback of different spectral resolution (1, 2, 4, and 8 channels). NH subjects were asked to
produce and identify vowels, as well as recognize sentences while listening to the real-time CI
simulation. The results showed that sentence recognition scores with the real-time CI simulation
improved with more channels, similar to those with the traditional off-line CI simulation.
Perception of a vowel continuum “HEAD”- “HAD” was near chance with 1, 2, and 4 channels,
and greatly improved with 8 channels and full spectrum. The spectral resolution of auditory
feedback did not significantly affect any acoustic feature of vowel production (e.g., vowel space
area, mean amplitude, mean and variability of fundamental and formant frequencies). There
was no correlation between vowel production and perception. The lack of effect of auditory
feedback spectral resolution on vowel production was likely due to the limited exposure of NH
subjects to CI simulation and the limited frequency ranges covered by the sinewave carriers of
CI simulation. Future studies should investigate the effects of various CI processing parameters
on speech production using a noise-band CI simulation.
I created a flash unit on American Ethnic Literature and delivered it in a high school classroom. The purpose was to introduce students to ethnic literature and to highlight the value of ethnic literature as a form of cultural agency and an authentic record of cultural history. I did research on the importance of ethnic literature, why it has been absent from the standard curriculum, and why it should be a part of the standard curriculum. Because of ethnic literature's importance and absence, I constructed the unit for secondary education and created a micro-unit on ethnic fiction and a micro-unit on ethnic poetry. I delivered the micro-unit on ethnic fiction at Metro Tech High School, gathered data, and reflected on the outcomes. Based on the outcomes, I revised the unit for future teaching and application.