The effect of reverberant sound level on the intelligibility of spoken Malay words

Reverberant sound is known to degrade Speech Intelligibility (SI). For instance, it has been found that amplitude of English speech signal, syllable continuum from “sir” to “stir”, is affected in reverberant condition. However, there are currently no studies on the effect of reverberation on spoken...

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Main Author:	Ahmad, Muhammad ‘Aasim Asyafi’ie
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/53808/1/MuhammadAasimAsyafiieMFKE2015.pdf
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id	my-utm-ep.53808
record_format	uketd_dc
spelling	my-utm-ep.538082020-09-06T03:56:13Z The effect of reverberant sound level on the intelligibility of spoken Malay words 2015-03 Ahmad, Muhammad ‘Aasim Asyafi’ie TK Electrical engineering. Electronics Nuclear engineering Reverberant sound is known to degrade Speech Intelligibility (SI). For instance, it has been found that amplitude of English speech signal, syllable continuum from “sir” to “stir”, is affected in reverberant condition. However, there are currently no studies on the effect of reverberation on spoken Malay words. The purpose of this research is to investigate the effect of reverberant sound on spoken Malay words. The project started with the development of Malay word list. The list consists of 5924 distinct Malay words and was based on the texts from 52 Friday sermon transcripts that were spoken in Kuala Lumpur mosques. The Malay words spoken in mosques were used because SI in many mosques suffers from reverberant sound. From this, two sets of phonetically balanced word lists were developed with each contain 50 words. These words were then recorded in an audiometry room with the help of two trained speakers, a male and a female. The recorded words were then played back in seven different room samples with different reverberant sound levels. Reverberation time was used as level indicator (in seconds) of reverberant sound. The effect of each room sample on clean recorded words was analysed in terms of fundamental frequency (F0), first and second formant frequency (F1 and F2), and spectral tilt. The effect of reverberant sound on F0 for female speaker was more profound and statistically significant. The F1 of both speakers were not affected by reverberant sound. However, only F2 of female speaker was affected by reverberant sound. The value of spectral tilt shows that vowel /a/ is the most susceptible to reverberant sound. In conclusion F0, F2, and spectral tilt are relevant parameters, and have been able to demonstrate the effect of reverberant sound on spoken Malay words. 2015-03 Thesis http://eprints.utm.my/id/eprint/53808/ http://eprints.utm.my/id/eprint/53808/1/MuhammadAasimAsyafiieMFKE2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86157 masters 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 Ahmad, Muhammad ‘Aasim Asyafi’ie The effect of reverberant sound level on the intelligibility of spoken Malay words
description	Reverberant sound is known to degrade Speech Intelligibility (SI). For instance, it has been found that amplitude of English speech signal, syllable continuum from “sir” to “stir”, is affected in reverberant condition. However, there are currently no studies on the effect of reverberation on spoken Malay words. The purpose of this research is to investigate the effect of reverberant sound on spoken Malay words. The project started with the development of Malay word list. The list consists of 5924 distinct Malay words and was based on the texts from 52 Friday sermon transcripts that were spoken in Kuala Lumpur mosques. The Malay words spoken in mosques were used because SI in many mosques suffers from reverberant sound. From this, two sets of phonetically balanced word lists were developed with each contain 50 words. These words were then recorded in an audiometry room with the help of two trained speakers, a male and a female. The recorded words were then played back in seven different room samples with different reverberant sound levels. Reverberation time was used as level indicator (in seconds) of reverberant sound. The effect of each room sample on clean recorded words was analysed in terms of fundamental frequency (F0), first and second formant frequency (F1 and F2), and spectral tilt. The effect of reverberant sound on F0 for female speaker was more profound and statistically significant. The F1 of both speakers were not affected by reverberant sound. However, only F2 of female speaker was affected by reverberant sound. The value of spectral tilt shows that vowel /a/ is the most susceptible to reverberant sound. In conclusion F0, F2, and spectral tilt are relevant parameters, and have been able to demonstrate the effect of reverberant sound on spoken Malay words.
format	Thesis
qualification_level	Master's degree
author	Ahmad, Muhammad ‘Aasim Asyafi’ie
author_facet	Ahmad, Muhammad ‘Aasim Asyafi’ie
author_sort	Ahmad, Muhammad ‘Aasim Asyafi’ie
title	The effect of reverberant sound level on the intelligibility of spoken Malay words
title_short	The effect of reverberant sound level on the intelligibility of spoken Malay words
title_full	The effect of reverberant sound level on the intelligibility of spoken Malay words
title_fullStr	The effect of reverberant sound level on the intelligibility of spoken Malay words
title_full_unstemmed	The effect of reverberant sound level on the intelligibility of spoken Malay words
title_sort	effect of reverberant sound level on the intelligibility of spoken malay words
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/53808/1/MuhammadAasimAsyafiieMFKE2015.pdf
_version_	1747817631933530112

The effect of reverberant sound level on the intelligibility of spoken Malay words

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