Patent ID: 6725150
Filing Date: 2004-04-20
Classification: G10K

Abstract:
A turbo-charged vehicle engine sound simulator adapted to function in combination with a turbo-charged vehicle-engine having a coil, a tachometer, an alternator, an engine manifold having a manifold absolute pressure (MAP) sensor, and a vehicle battery, said simulator comprising:a) an engine revolutions-per-minute (RPM) source having means for producing an engine RPM signal, b) a vacuum pressure switch having means for being set to a vacuum pressure corresponding to a selected engine RPM and having further means for receiving the engine RPM signal and for producing an RPM signal corresponding to the set RPM, c) a turbo-sound storage unit having means for receiving and processing the RPM signal and producing a turbo-sound signal that simulates the sound of a blow-off valve that is connected to the turbo-charged vehicle engine, d) a power amplifier having means for receiving and amplifying the turbo-sound signal and producing a loudspeaker drive signal, e) a loudspeaker having means for receiving the loudspeaker drive signal and producing the sound of the blow-off valve that is heard within and outside the confirms of the vehicle, and f) a regulated power supply designed to provide the required voltage and current to operate said simulator, wherein said power supply has an input derived from the vehicle battery.