【摘要】 研究了基于三带提升方法的三带自适应双正交滤波器组的设计。在设计中,用子带编码增益作为设计准则,从一个滤波器组(标准正交或双正交)开始,通过联合自适应提升方法来设计三带双正交滤波器组。设计结果表明:子带编码增益可以得到明显提高,而且该方法还可以推广到M带情况。更多还原

【Abstract】 In this paper,three-channel adaptive biorthogonal filterbanks via lifting scheme are studied.The subband coding gain is used as the criterion in design.Starting from an arbitrary filterbank(orthonormal or biorthogonal),three-channel biorthogonal filterbanks are designed by the joint adaptive lifting scheme.Design results show that the subband coding gains can be markedly improved,and this method can be extended in using M band conditions.更多还原