A method of reducing features occurring at particular frequencies such as at coincidence is described. A panel (11) has exciters (13, 15) arranged to reduce the feature. The exciters may be driven in phase but be spaced apart by a distance substantially equal to half the wavelength of bending waves in the panel at this particular frequency.
申请公布号
WO0033612(A2)
申请公布日期
2000.06.08
申请号
WO1999GB03956
申请日期
1999.11.29
申请人
NEW TRANSDUCERS LIMITED;BANK, GRAHAM;STARNES, MARK