... low frequency components not exist, and hence the nonorthogonal decomposition should be applied on the original signal directly ENCODER/DECODER STRUCTURE Due to the complications introduced by the ... Typically, one scale of orthogonal decompositions is used with two scales of nonorthogonal decompositions It should be mentioned that the filters of orthogonal and nonorthogonal decompositions ... International Conference on Image Processing, vol 2, pp 676–679, Washington, DC, USA, 1997 [7] M F Mansour and A H Tewfik, “Audio watermarking by time-scale modification,” in Proc IEEE Int Conf Acoustics,...