Processor architecture for extended lapped transform

This paper is devoted to implementation of Extended Lapped Transform (ELT), which is among the most efficient factorization methods for paraunitary filterbanks. First we utilize the special form of the matrices in the part of factorization of ELT to process data at input data rate in a pipelined structure with minimal number of processor elements without inserting additional delays. Next we suggest an algorithm for DCT-IV transform, the other part of ELT factorization, with a constant geometry structure suitable for the use of perfect-shuffle network.