Educational Technology Commons^™

Digitally Rural: Identifying How Technological Inequity Impacts Rural Students In First-Year Writing Courses, Jo Anna M. Nevada

English Language and Literature ETDs

To teach composition in this era means to engage students with technology; it is all but an unspoken requirement at the majority of universities. This dissertation theorizes, however, that the imbricated use of technology in first-year writing (FYW) classrooms places rural students at an inherent disadvantage, with issues of inadequate technological proficiency and inconsistent access causing a substantial learning disparity between this student population and their urban peers. Through mixed-methods data analysis of student survey responses and final FYW course portfolios, this study reveals that the expectation of technological access and presumption of digital literacy is detrimental to rural student …

Speaker Diarization And Identification From Single-Channel Classroom Audio Recording Using Virtual Microphones, Antonio Gomez

Electrical and Computer Engineering ETDs

Speaker identification in noisy audio recordings, specifically those from collaborative learning environments, can be extremely challenging. There is a need to identify individual students talking in small groups from other students talking at the same time. To solve the problem, we assume the use of a single microphone per student group without any access to previous large datasets for training.

This dissertation proposes a method of speaker identification using cross-correlation patterns associated to an array of virtual microphones, centered around the physical microphone. The virtual microphones are simulated by using approximate speaker geometry observed from a video recording. The patterns …