ACTIVE INTRA-CABIN NOISE CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a comfortable cabin by preventing an active intra-cabin noise control device for reducing intra-cabin noise from malfunctions caused by impact noise made artificially by a passenger touching a noise detector.;SOLUTION: The active intra-cabin noise control device comprises a plurality of noise detectors 3, a LMS algorithm processor 2b, and a noise signal comparator 6 between the two. The noise control device stops output from the noise signal comparator 6 to the LMS algorithm processor 2b when the noise signal comparator 6 judges that only one out of noise signals each of the plurality of noise detectors 3 detects is a predetermined level or more and regards the signal as impact noise made artificially by a passenger. The active intra-cabin noise control device prevents the radiation of disturbing sounds by preventing malfunctions of the device caused by this impact noise.;COPYRIGHT: (C)2009,JPO&INPIT