Automobile safety equipment, namely, a device that electronically discriminates the sound of emergency vehicles from ambient noise and warns the driver of an approaching emergency vehicle by shutting off the vehicle's audio system and providing indication to the occupants of the vehicle via audio and/or visual signals

'ambient':16 'and/or':46 'approach':24 'audio':33,45 'automobil':1 'devic':6 'discrimin':9 'driver':21 'electron':8 'emerg':13,25 'equip':3 'indic':37 'name':4 'nois':17 'occup':40 'provid':36 'safeti':2 'shut':28 'signal':48 'sound':11 'system':34 'vehicl':14,26,31,43 'via':44 'visual':47 'warn':19

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