Vliv nelinearní odezvy v kochlee na vjem řeči v šumu
Effect of Cochlear Compression on Predicted Speech in Noise Perception
Typ dokumentu
bakalářská prácebachelor thesis
Autor
Yuyang Liu
Vedoucí práce
Vencovský Václav
Oponent práce
Bouše Jaroslav
Studijní program
Electrical Engineering and Computer ScienceInstituce přidělující hodnost
katedra elektroenergetikyPráva
A university thesis is a work protected by the Copyright Act. Extracts, copies and transcripts of the thesis are allowed for personal use only and at one?s own expense. The use of thesis should be in compliance with the Copyright Act http://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf and the citation ethics http://knihovny.cvut.cz/vychova/vskp.htmlVysokoškolská závěrečná práce je dílo chráněné autorským zákonem. Je možné pořizovat z něj na své náklady a pro svoji osobní potřebu výpisy, opisy a rozmnoženiny. Jeho využití musí být v souladu s autorským zákonem http://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf a citační etikou http://knihovny.cvut.cz/vychova/vskp.html
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This thesis investigates the role of cochlear compression in speech perception, particularly in noisy environments, using an advanced auditory model. The primary focus is on the analysis of speech in multitalker babble noise by using an auditory model composed with a dual resonance non-linear (DRNL) filterbank. A key aspect of this study is examining how the overall signal intensity, meaning the intensity of speech and babble noise with constant signal-to-noise ratio (-5 dB), influences these predictions. The research employs a systematic approach, comparing the auditory model's predictions and showing the similarity between the model outputs to speech and speech plus babble noise with actual experimental listening test results from the literature. The currently used listening test results reveal a notable improvement in speech perception in noise at intensities up to about 70 dB sound pressure level (SPL). In contrast, the model predictions presented in this thesis do not fully show improvement with increasing sound levels. This discrepancy highlights the complexity of cochlear compression and suggests that additional factors beyond cochlear compression may contribute to speech perception in noisy environments. The findings are pivotal in understanding the extent to which cochlear compression contributes to this improvement. This thesis investigates the role of cochlear compression in speech perception, particularly in noisy environments, using an advanced auditory model. The primary focus is on the analysis of speech in multitalker babble noise by using an auditory model composed with a dual resonance non-linear (DRNL) filterbank. A key aspect of this study is examining how the overall signal intensity, meaning the intensity of speech and babble noise with constant signal-to-noise ratio (-5 dB), influences these predictions. The research employs a systematic approach, comparing the auditory model's predictions and showing the similarity between the model outputs to speech and speech plus babble noise with actual experimental listening test results from the literature. The currently used listening test results reveal a notable improvement in speech perception in noise at intensities up to about 70 dB sound pressure level (SPL). In contrast, the model predictions presented in this thesis do not fully show improvement with increasing sound levels. This discrepancy highlights the complexity of cochlear compression and suggests that additional factors beyond cochlear compression may contribute to speech perception in noisy environments. The findings are pivotal in understanding the extent to which cochlear compression contributes to this improvement.
Kolekce
- Bakalářské práce - 13115 [273]