A comparative study on MFCC, GFCC, BFCC, and CQCC spectral speech feature performance in x-vector clustering / by Abelson Abueg.

Author/creator Abueg, Abelson author.
Other author Tabrizi, M. H. N., degree supervisor.
Other author East Carolina University. Department of Computer Science.
Format Theses and dissertations
Publication[Greenville, N.C.] : [East Carolina University], 2023.
Description1 online resource (88 pages) : illustrations (some color)
Supplemental ContentAccess via ScholarShip
Subjects

Summary Speaker diarization plays a crucial role in accurately identifying speakers in audio or video streams with multiple speakers. However, the use of Mel-frequency cepstral coefficients (MFCC) as the default speaker feature has posed a significant limitation in speech processing research. Existing literature suggests a lack of research addressing this limitation. This thesis aims to fill this gap by exploring alternative speech features and conducting a comprehensive investigation of their performance in the clustering step of speaker diarization. By conducting a comparative analysis of various spectral features, including Gammatone Frequency Cepstral Coefficients (GFCC), Constant-Q Cepstral Coefficients (CQCC), and Bark Frequency Cepstral Coefficients (BFCC), this study trains four distinct x-vector embedding deep neural networks (DNNs) and evaluates their effectiveness using four clustering algorithms. The results highlight the potential of the investigated alternative spectral features to outperform MFCC, emphasizing the need to move beyond the default MFCC approach and encouraging further exploration of alternative speech features for enhancing speaker diarization and related speech-processing tasks.
General notePresented to the Faculty of the Department of Computer Science
General noteAdvisor: Nasseh Tabrizi
General noteTitle from PDF t.p. (viewed November 25, 2024).
Dissertation noteM.S. East Carolina University 2023.
Bibliography noteIncludes bibliographical references.
Technical detailsSystem requirements: Adobe Reader.
Technical detailsMode of access: World Wide Web.

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