A system and method for accurately estimating engine noise at a virtual microphone location, such as an occupant's ear position, in an acoustic space in order to enhance performance of an Engine Order Cancellation (EOC) system is provided. A set of weights and transfer functions that are dependent on various vehicle parameters, such as frequency, load, and speed, may be employed to estimate noise at a position where there are no physical microphones present. The accurate estimation of engine noise at virtual location, such as an occupant's ear position, may be achieved using a frequency dependent weighted sum of filtered and unfiltered error signals measured at microphones mounted at various locations inside an acoustic space, such as a vehicle cabin, which may not be located near virtual location.
VIRTUAL LOCATION NOISE SIGNAL ESTIMATION FOR ENGINE ORDER CANCELLATION
SCHÄTZUNG EINES RAUSCHSIGNALS AN EINEM VIRTUELLEN STANDORT FÜR ENGINE-ORDER-GERÄUSCHUNTERDRÜCKUNG
ESTIMATION DE SIGNAL DE BRUIT D'UN EMPLACEMENT VIRTUEL POUR ANNULATION DE BRUIT DE ROTATION DU MOTEUR
28.06.2023
Patent
Elektronische Ressource
Englisch
Virtual location noise signal estimation for engine order cancellation
Europäisches Patentamt | 2021
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