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Wayne State University Dissertations
Neural activities, source localization, source separation, time reversal, tinnitus diagnosis, triangulation
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Locating And Extracting Acoustic And Neural Signals, Na Zhu
Locating And Extracting Acoustic And Neural Signals, Na Zhu
Wayne State University Dissertations
This dissertation presents innovate methodologies for locating, extracting, and separating multiple incoherent sound sources in three-dimensional (3D) space; and applications of the time reversal (TR) algorithm to pinpoint the hyper active neural activities inside the brain auditory structure that are correlated to the tinnitus pathology. Specifically, an acoustic modeling based method is developed for locating arbitrary and incoherent sound sources in 3D space in real time by using a minimal number of microphones, and the Point Source Separation (PSS) method is developed for extracting target signals from directly measured mixed signals. Combining these two approaches leads to a novel technology …