Residents of a quiet village in Indonesia watched in dismay as a towering sound system mounted on a truck rolled through their normally peaceful community, blasting bass-heavy music so loud it was capable of cracking windows.
These mobile loudspeaker towers—known locally as “sound systems”—are a common sight on Java, the country’s most populous island. Often used at street parties and local festivals, they blast a mix of electronic beats and traditional Javanese folk music. However, the extreme noise levels have increasingly drawn complaints from local authorities and nearby residents.
“The sound is booming from 1pm to 3am. They play loud music and drink alcohol,” said Ahmad Suliyat, a resident of Ngantru village in East Java. “It’s really disturbing.”
Videos circulating on social media show the physical damage caused by the vibrations from these sound systems, including cracked walls, fallen roof tiles, and damaged storefronts. Locals refer to the phenomenon as “sound horeg”—a Javanese term meaning to shake or vibrate.
The growing public outcry has prompted the East Java provincial government to take action. This month, officials issued a new regulation limiting noise levels, as well as specifying when and where such loudspeakers can be used.
“This regulation was introduced for health and security reasons. Noise levels must be controlled to maintain public peace and order,” East Java Governor Khofifah Indar Parawansa told AFP.
Health Risks of Extreme Noise Exposure
Prolonged exposure to extremely loud sounds has been linked to a range of health issues, including stress, sleep disturbances, and even cardiovascular problems such as increased risk of heart disease.
In Indonesia, where these sound systems have gained popularity over the past decade, the trend has had tragic consequences. Local media reported that a woman recently died from a suspected cardiac arrest caused by the intense noise at a local carnival. Additionally, there has been a noticeable rise in hearing impairments among those who frequently attend such events.
To address the issue, the East Java government has set a maximum sound level of 120 decibels for stationary sound systems and 85 decibels for mobile units used during parades or protests—marking a significant step toward protecting public health and preserving community tranquility.