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https://drivepatents.com/patents/967439 · 12 Nov 2014
A sound generator (103) for an anti-sound system for influencing sound waves conducted in intake systems or exhaust systems of combustion engine-powered vehicles comprises a housing (131) with a connection opening (132) for fluid connection of an intake sy...
https://drivepatents.com/patents/1108741 · 7 Nov 2001
The system has a pipe section (25) with an induction opening and an electromagnetic transducer (14) producing noise to influence the gas flow in the pipe section, especially to correct engine induction noise. The transducer has an actuator for noise genera...
https://drivepatents.com/patents/1109453 · 10 Oct 2001
The method of noise attenuation comprises the steps of generating a noise canceling signal, sensing for an system condition, and ceasing the generation of the noise canceling based upon the system condition. This method is embodied in a system that include...