Speech intelligibility prediction model in room with reflective dome

This thesis presents research works on developing the objective speech intelligibility prediction models in room with dome in terms of acoustics, and room and dome geometry. The purpose of the research was to enable one to predict speech intelligibility (SI) in room with dome as early as at the c...

Full description

Saved in:

Bibliographic Details
Main Author:	Harun, Mokhtar
Format:	Thesis
Language:	English
Published:	2005
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/4182/1/MokhtarHarunPFKE2005.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.4182
record_format	uketd_dc
spelling	my-utm-ep.41822018-01-15T07:38:51Z Speech intelligibility prediction model in room with reflective dome 2005-05 Harun, Mokhtar TK Electrical engineering. Electronics Nuclear engineering This thesis presents research works on developing the objective speech intelligibility prediction models in room with dome in terms of acoustics, and room and dome geometry. The purpose of the research was to enable one to predict speech intelligibility (SI) in room with dome as early as at the conceptual design stage. The developed SI prediction models have made possible the estimation of the acceptable room and dome dimension ratios for speech, the determination of the significant acoustics parameters that affect SI, and the determination of achievable SI scores at any audience area in room with dome. The research was begun with pilot study and room investigations in large mosques with dome in Johor. Similar works were later extended in Negeri Sembilan, Selangor and Kedah. Basic dimensions of room and dome, types of dome, types of ceiling, and types of material and finishes in room and on dome surfaces were obtained. Having completed room investigation activity, acoustics measurements were conducted in thirty-two mosques with dome, with dome volume ranging from 100 m3 to 10000 m3 to determine Speech Interference Level (SIL), reverberation time (RT60) and speech intelligibility assessor, Speech Transmission Index (STI); the parameters that are required for the development of SI prediction models. It was found that RT60 is able to predict minimum SI scores in area 6Â° outside sound source coverage area, which is STIOUT6(min). Average SI under dome area, STIDA(mean) is found to be efficiently predicted by average sound absorption coefficients of the room. Both STIDS(min) and STIDS(mean) are well predicted by room and dome geometry. From the simulation works, it has been found that the developed SI prediction models have achieved acceptable prediction accuracy for the practical purposes, with multiplication of 0.2 to 2.6. Therefore, the development of SI prediction models has been successful, accurate and time effective to obtain optimum achievable SI in room with dome. 2005-05 Thesis http://eprints.utm.my/id/eprint/4182/ http://eprints.utm.my/id/eprint/4182/1/MokhtarHarunPFKE2005.pdf application/pdf en public phd doctoral Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Harun, Mokhtar Speech intelligibility prediction model in room with reflective dome
description	This thesis presents research works on developing the objective speech intelligibility prediction models in room with dome in terms of acoustics, and room and dome geometry. The purpose of the research was to enable one to predict speech intelligibility (SI) in room with dome as early as at the conceptual design stage. The developed SI prediction models have made possible the estimation of the acceptable room and dome dimension ratios for speech, the determination of the significant acoustics parameters that affect SI, and the determination of achievable SI scores at any audience area in room with dome. The research was begun with pilot study and room investigations in large mosques with dome in Johor. Similar works were later extended in Negeri Sembilan, Selangor and Kedah. Basic dimensions of room and dome, types of dome, types of ceiling, and types of material and finishes in room and on dome surfaces were obtained. Having completed room investigation activity, acoustics measurements were conducted in thirty-two mosques with dome, with dome volume ranging from 100 m3 to 10000 m3 to determine Speech Interference Level (SIL), reverberation time (RT60) and speech intelligibility assessor, Speech Transmission Index (STI); the parameters that are required for the development of SI prediction models. It was found that RT60 is able to predict minimum SI scores in area 6Â° outside sound source coverage area, which is STIOUT6(min). Average SI under dome area, STIDA(mean) is found to be efficiently predicted by average sound absorption coefficients of the room. Both STIDS(min) and STIDS(mean) are well predicted by room and dome geometry. From the simulation works, it has been found that the developed SI prediction models have achieved acceptable prediction accuracy for the practical purposes, with multiplication of 0.2 to 2.6. Therefore, the development of SI prediction models has been successful, accurate and time effective to obtain optimum achievable SI in room with dome.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Harun, Mokhtar
author_facet	Harun, Mokhtar
author_sort	Harun, Mokhtar
title	Speech intelligibility prediction model in room with reflective dome
title_short	Speech intelligibility prediction model in room with reflective dome
title_full	Speech intelligibility prediction model in room with reflective dome
title_fullStr	Speech intelligibility prediction model in room with reflective dome
title_full_unstemmed	Speech intelligibility prediction model in room with reflective dome
title_sort	speech intelligibility prediction model in room with reflective dome
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2005
url	http://eprints.utm.my/id/eprint/4182/1/MokhtarHarunPFKE2005.pdf
_version_	1747814498844016640

Speech intelligibility prediction model in room with reflective dome

Similar Items