Efficient implementation of arbitrary-length cosine-modulated filter bank
Xiqi Gao, Zhenya He, Xiang-Gen Xin · IEEE Transactions on Signal Processing · 1999
The fast implementation of arbitrary-length cosine-modulated filter bank is investigated. By using the linear phase property of the prototype filter, a more efficient implementation structure is obtained for the filter bank. In the new implementation, 2/spl times/2 lossless lattices are used instead of 2/spl times/1 ones in the traditional implementation with the number reduced by half.