Uber bass for your car
To help people understand the need to move out of your way!
5. Rumbler Intersection Clearing System Whether it’s due to cranked-up radios or a plummeting sense of civic duty, today’s drivers are apparently less likely to get out of the way of a police siren. Taking a page from thunderous, bass-heavy car audio systems, Chicago-based Federal Signal created the Rumbler. The “Intersection Clearing System” consists of two 8-in. woofers and an amp, adding a low-frequency signal to an existing siren’s high-pitched wail. According to Joseph Bader, vice president of engineering for Mobile Systems at Federal Signal, the Rumbler was designed to operate at 180 to 360 cycles per second. Sirens, by comparison, are in the 500- to 2000-cycle range, and music is either high in cycles, or extremely low (those bassed-up audio systems are buzzing at 120 cycles or less). The Rumbler’s range is not only pretty different, it’s pretty disconcerting, which is what makes it effective. And since the system is essentially duplicating the siren’s existing signal at a much lower frequency, listeners quickly realize that the vibrations they’re feeling are mapped to the rise and fall of the approaching siren. In most cases, officers turn on their Rumblers for a single 10-second interval, which is long enough to clear an intersection or a jammed-up stretch of highway. The effective range is up to 200 ft. ahead of the police vehicle. But Bader says the system is more useful in close quarters.
Short-Term Impact: The Rumbler is being adopted by agencies on the East coast, particularly in metropolitan areas, such as Washington, D.C. The system’s simple installation and incredibly low cost—around $600 per car—could make it a fixture in city-based fleets within a few years.
I think gangsters have been using their own version of this for years tho...
5. Rumbler Intersection Clearing System Whether it’s due to cranked-up radios or a plummeting sense of civic duty, today’s drivers are apparently less likely to get out of the way of a police siren. Taking a page from thunderous, bass-heavy car audio systems, Chicago-based Federal Signal created the Rumbler. The “Intersection Clearing System” consists of two 8-in. woofers and an amp, adding a low-frequency signal to an existing siren’s high-pitched wail. According to Joseph Bader, vice president of engineering for Mobile Systems at Federal Signal, the Rumbler was designed to operate at 180 to 360 cycles per second. Sirens, by comparison, are in the 500- to 2000-cycle range, and music is either high in cycles, or extremely low (those bassed-up audio systems are buzzing at 120 cycles or less). The Rumbler’s range is not only pretty different, it’s pretty disconcerting, which is what makes it effective. And since the system is essentially duplicating the siren’s existing signal at a much lower frequency, listeners quickly realize that the vibrations they’re feeling are mapped to the rise and fall of the approaching siren. In most cases, officers turn on their Rumblers for a single 10-second interval, which is long enough to clear an intersection or a jammed-up stretch of highway. The effective range is up to 200 ft. ahead of the police vehicle. But Bader says the system is more useful in close quarters.
Short-Term Impact: The Rumbler is being adopted by agencies on the East coast, particularly in metropolitan areas, such as Washington, D.C. The system’s simple installation and incredibly low cost—around $600 per car—could make it a fixture in city-based fleets within a few years.
I think gangsters have been using their own version of this for years tho...
posted by kleverasever | 11:07 AM
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