Patent ID: 7876910
Filing Date: 2011-01-25
Classification: G10K

Abstract:
1. An active noise/sound control system for use in a vehicle, having an active noise control apparatus for reducing noise in a vehicle cabin based on a detected signal representative of engine vibrations, and an active sound control apparatus for generating a sound effect in the vehicle cabin based on said detected signal, said active noise control apparatus generating a reference signal based on said detected signal, generating a first control signal by changing an amplitude and a phase of the reference signal based on the detected signal picked up by a microphone positioned near an occupant of the vehicle, and supplying the first control signal to a speaker for radiating acoustic sounds to the occupant, said active sound control apparatus generating the reference signal based on said detected signal, generating a second control signal by changing an amplitude and a phase of the reference signal such that a sound effect depending on acceleration of the vehicle is produced, and supplying the second control signal to the speaker, said active noise/sound control system comprising: running state detecting means for detecting a running state of the vehicle; and a weight setting means for setting weighting variables for the first control signal and the second control signal depending on the detected running state of the vehicle, wherein when detecting a running state as idling or cruising, the weight setting means sets the weighting variable for the first control signal greater than the weighting variable for the second control signal, and when detecting the running state as accelerating, the weight setting means sets the weighting variable for the second control signal greater than the weighting variable for the first control signal.