Mohd. Taha, Haslinda
(2002)
Field survey on road traffic noise and evaluation of hearing loss and risk factors questionnaire in the community of Kota Bharu, Kelantan.
Masters thesis, Universiti Sains Malaysia.
Abstract
Tujuan utama kajian ini dijalankan adalah untuk mengenalpasti tahap purata
kebisingan bunyi bising di beberapa tempat di sekitar Kota Bharu dan menilai
beberapa factor-faktor yang berisiko menyebabkan masalah pendengaran dan
mengenengahkan inciden masalah kehilangan pendengaran yang disebabkan
oleh bunyi bising terutama terhadap orang-orang yang tinggal berhampiran dengan
jalanraya-jalanraya yang sibuk.
Tahap kebisingan bunyi diukur menggunakan peralatan yang dipanggil 'sound level
meter' di sepanjang 15 tempat sepanjang jalanraya-jalanraya yang dipilih. Kajian
meliputi 16 jam dalam masa sehari. Tempat yang dipilih kemudiannya dibahagikan
kepada tiga kumpulan utama. Berdasarkan kepada tahap purata kebisingan bunyi,
kumpulan tersebut sekali lagi dibahagikan kepada kumpulan yang terdedah kepada
bunyi bising dan kumpulan yang dikawal.
The purpose of this study were to established the average traffic noise level in
various places in Kota Bharu and to assess various risk factor of hearing loss and to document the incidence of noise- induced hearing loss among people living the traffic lane in Kota Bharu.
The noise level were measured using the sound level meter at 15 sites along the traffic lane . The study was carried out for 16 hours per day. Those sites were then categorize into three main groups.Based on the average noise level the group then further divided into noise exposed group and control group. Then written questionnaire were given to both, the exposed group and control to assess the risk
factors for hearing loss among them. Subsequently the pure tone audiogram were done to assess the hearing status.
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