A TRAIN horn producing closely-confined broadband sound has been developed by Brigade Electronics. It is currently on test fitted to an Electrostar EMU based at South Central’s Brighton depot, where local residents have complained about frequent disturbance from horns.

Based on the firm’s bbs-tek reversing alarm, the broadband horn meets UK standards requiring it to be audible 400m ahead of the train, but unlike conventional horns the sound is restricted to the danger area in front of the train, reducing noise pollution. The multi-frequency sound is not drowned out by competing single frequencies, so extra volume is not needed for the horn to be heard over ambient noise. The direction of the source of the sound is also easier to locate.

Brigade Electronics, UK

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