ACTIVESILENCE

Exhaust systems for land, air and water vehicles propelled by internal combustion engines, comprised of exhaust pipes, mufflers, tailpipes and silencers; parts for such exhaust systems, namely metal pipes, mufflers, exhaust gas catalytic converters, soot filters, in each case alone or in combination with the respective housing

Electronic sound generators, loudspeakers, electronic sound sensors for sensing sound pressure in vehicle exhaust systems and microphones, in each case alone or in combination with the respective housing; electronic control units and computer programs for use in operating exhaust systems and exhaust system parts thereof, namely the mufflers, exhaust gas catalytic converters, soot filters, sound generators, loudspeakers, sound sensors and microphones