LA Times on LAPD Rumbler Sirens
The Los Angeles Times reports that the Los Angeles Police Department (LAPD) has begun installing Rumbler low-frequency sirens in its police vehicles, with plans for a larger expansion of the system.
Read the Los Angeles Times article on LAPD Rumbler sirens.
The Los Angeles Police Department announced its intention to install the low-frequency Rumbler siren in 20 black-and-white vehicles before a larger expansion. The Rumbler works in conjunction with a standard police siren, producing powerful low-frequency sound designed to be both heard and felt.
The Rumbler interacts with a standard police siren, which generates around 110 to 120 decibels, and amplifies that sound through its speakers in eight-second intervals. Whereas the blare of a regular siren may bounce off vehicles and buildings, the low-frequency tones “have the distinct advantage of penetrating solid materials, allowing vehicle operators and nearby pedestrians to feel the sound waves,” the manufacturer says.
NoiseOFF founder Richard Tur was interviewed for the article and discussed concerns about the impact of Rumbler sirens on residents and bystanders, including the broader noise pollution implications of deploying low-frequency sirens in densely populated areas.