Analisis Tingkat Kebisingan dan Karakteristik Akustik pada Kabin Penumpang KRL KfW

Handoyo, Ristya Aryuda (2021) Analisis Tingkat Kebisingan dan Karakteristik Akustik pada Kabin Penumpang KRL KfW. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian tentang tingkat kebisingan dan karakteristik akustik pada kabin penumpang KRL KfW pada gerbong trailler car (TC) dengan kondisi kereta berhenti dan mesin kereta tidak menyala telah dilakukan. Dengan parameter akustik yang diukur pada penelitian ini yaitu background noise, noise reduction, reverberation time, dan persebaran sound pressure level. Penelitian ini dilakukan dengan metode impulse response dan field sound transmission. Dari hasil pengukuran didapatkan nilai noise criteria pada NC – 34 dengan rata – rata tingkat tekanan bunyi sebesar 30 dBA, rata – rata waktu dengung 0,389 detik, selisih pada pesebaran SPL sebesar 3 dBA sampai 16 dBA dan nilai field sound transmission class (FSTC) pada pintu dengan nilai FSTC–13, pada jendela dengan nilai FSTC–23 dan pada dinding dengan nilai FSTC–22. Dari hasil pengukuran dan analisis didapatkan kesimpulan tingkat kebisingan pada kabin penumpang KRL KfW termasuk dalam kategori tenang dengan tingkat tekanan bunyi sebesar 30 dBA dalam keadaan kereta berhenti dan mesin kereta tidak menyala. Serta karakteristik akustik dalam kabin penumpang KRL KfW memiliki frekuensi dominan pada frekuensi 1000 Hz sampai 2000 Hz.
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This research is about noise level and acoustic characteristics in the passenger cabin of KRL KfW on carriage trailler car (TC) when it stopped and the train engine is turned off. With the acoustic parameters measured in this study are background noise, noise reduction, reverberation time, and the distribution of sound pressure level. This research was conducted by impulse response method and field sound transmission. From the measurement results obtained the value of the noise criteria in NC – 34 with an average sound pressure level of 30 dBA, the average reverberation time 0,389 seconds, the difference in sound pressure level of 3 dBA to 16 dBA, and the value of field sound transmission class (FSTC) on the door with value of FSTC–13, on the window with value of FSTC–23 and on walls with a value of FSTC–22. From the results of measurements and analysis, it is concluded that the noise level in the passenger cabin KRL KfW included in the category of quiet with a sound pressure level of 30 dBA in the state of the trains is stopped and the train engine is turned off. As well as the acoustic characteristics in the passenger cabin KRL KfW has a dominant frequency at a frequency of 1000 Hz to 2000 Hz.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Kebisingan, Kereta, Kualitas akustik, Acoustic Quality, Noise, Train
Subjects:	Q Science > QC Physics > QC221 Acoustics. Sound
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Ristya Aryuda Handoyo
Date Deposited:	22 Aug 2021 05:39
Last Modified:	22 Aug 2021 05:39
URI:	http://repository.its.ac.id/id/eprint/88419

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