Effect of directivity index of a loudspeaker on speech intelligibility

There are many rooms are for speech communication purposes such as hall, auditorium, laboratory, meeting hall and lecture room. The main goal for communication is to understand what the speakers are saying and his words are not mistaken for other words. Also there have been identified the factors th...

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Main Author:	Zulhanip, Aida Zulia
Format:	Thesis
Published:	2010
Subjects:	TK Electrical engineering Electronics Nuclear engineering
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id	my-utm-ep.26703
record_format	uketd_dc
spelling	my-utm-ep.267032017-08-23T04:39:03Z Effect of directivity index of a loudspeaker on speech intelligibility 2010 Zulhanip, Aida Zulia TK Electrical engineering. Electronics Nuclear engineering There are many rooms are for speech communication purposes such as hall, auditorium, laboratory, meeting hall and lecture room. The main goal for communication is to understand what the speakers are saying and his words are not mistaken for other words. Also there have been identified the factors that affect speech intelligibility are background noise and reverberation time. However, speech intelligibility is also affected by the directivity of loudspeaker. The purpose of this research is to study the effect of directivity of loudspeaker into speech intelligibility with respect to room sizes and loudspeaker configurations. The experiment had been done in three different size rooms with similar rectangular shape. Measurement points (IS points) were selected in each room. The data of SPL and RT60 for each room were quantified by using sound level meter (SA - 27 RION) at Q = 1, Q = 2 and Q = 4. The results of the loudspeaker directivity on the speech intelligibility were represented using %Alcons on DPlot software. In conclusion, loudspeaker arrangements affects the perception of sound at in room samples, and Q = 4 was identified the best directivity configuration for good speech intelligibility. This is due to larger coverage of listening area. 2010 Thesis http://eprints.utm.my/id/eprint/26703/ http://libraryopac.utm.my/client/en_AU/main/search/results?qu=Effect+of+directivity+index+of+a+loudspeaker+on+speech+intelligibility&te= masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Zulhanip, Aida Zulia Effect of directivity index of a loudspeaker on speech intelligibility
description	There are many rooms are for speech communication purposes such as hall, auditorium, laboratory, meeting hall and lecture room. The main goal for communication is to understand what the speakers are saying and his words are not mistaken for other words. Also there have been identified the factors that affect speech intelligibility are background noise and reverberation time. However, speech intelligibility is also affected by the directivity of loudspeaker. The purpose of this research is to study the effect of directivity of loudspeaker into speech intelligibility with respect to room sizes and loudspeaker configurations. The experiment had been done in three different size rooms with similar rectangular shape. Measurement points (IS points) were selected in each room. The data of SPL and RT60 for each room were quantified by using sound level meter (SA - 27 RION) at Q = 1, Q = 2 and Q = 4. The results of the loudspeaker directivity on the speech intelligibility were represented using %Alcons on DPlot software. In conclusion, loudspeaker arrangements affects the perception of sound at in room samples, and Q = 4 was identified the best directivity configuration for good speech intelligibility. This is due to larger coverage of listening area.
format	Thesis
qualification_level	Master's degree
author	Zulhanip, Aida Zulia
author_facet	Zulhanip, Aida Zulia
author_sort	Zulhanip, Aida Zulia
title	Effect of directivity index of a loudspeaker on speech intelligibility
title_short	Effect of directivity index of a loudspeaker on speech intelligibility
title_full	Effect of directivity index of a loudspeaker on speech intelligibility
title_fullStr	Effect of directivity index of a loudspeaker on speech intelligibility
title_full_unstemmed	Effect of directivity index of a loudspeaker on speech intelligibility
title_sort	effect of directivity index of a loudspeaker on speech intelligibility
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2010
_version_	1747815490330296320

Effect of directivity index of a loudspeaker on speech intelligibility

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