Abstract
Active control of road noise in car cabins has received much attention in recent years and it has been well known that local quiet zones can be created with headrest loudspeakers. The local control performance achieved with door loudspeakers is investigated in this manuscript based on the measurements in a car cabin, and it is compared with that achieved with two headrest speakers. The noise reduction performance at error microphones, the upper limit frequency of effective control, as well as the size of the quiet zone are investigated in detail. The difficulties and challenges of using the door loudspeakers for local control are discussed.
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