SOUNDSCAPE ANALYSIS ON THE EXECUTIVE AND ECONOMY CLASS TRAIN

• Main Author: HIDAYAH (NIM : 13313017)-NIDA NURMADI HAMDANI (NIM : 13313093), NURUL
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23592
• Institution: Institut Teknologi Bandung

PT KAI as a transportation service provider company, requires to constantly improve the quality of service including acoustic comfort. So far the method used in evaluating acoustic comfort in passenger trains is limited to energy-based measurement, regardless of the passenger's perception of the sound. Therefore, a soundscape method that reviews acoustic conditions based on perceptions of passengers as a listener to obtain a qualitative assessment. <br /> <br /> <br /> The measurement methods used include sound recording and SPL measurements in trains as objective evaluation and questionnaires answered by train passengers as subjective evaluation. The equivalent sound pressure level measured is in the range of 65.8dBA to 72.1dBA below the KM No.41 of 2010 standard, but based on passenger perception, there are still disturbing noise sources. The dominant source of sound, based on objective and subjective evaluation is the sound of rolling bogie. Sound sources that are considered disturbing based on subjective observations are the sound of rolling bogie, baby crying, and the sound of bordes. The recommended solution is the installation of viscoelastic damping material that can reduce the rolling noise around 1dBA-8dBA, the installation of a warning sign to close the door or the periodically door check to ensure the door is closed to reduce the sound of the bordes, and the addition of a special passenger train that is a quiet zone with not too many crying babies and human activities.