Computationally efficient realization of mdft filter banks

T. Karp, N. J. Fliege

Research output: Contribution to journalConference articlepeer-review


A realization of the Modified DFT (MDFT) filter bank introduced in 1.2.3] was proposed in [4].The analysis and synthesis filter bank consist each of two DFT polyphase filter banks» one without delay and one delayed by Mj2 samples where M represents the number of channels of the MDFT filter bank.In this paper, we will show that the two DFTs can be reduced to a single one for prototypes of the lengths A∗ = r • M + 1 and A∗ = r • M + M/2 + 1.respectively, by doing some simple combinations with the input signals.Hereby the modulation cost is nearly halved.

Original languageEnglish
JournalEuropean Signal Processing Conference
StatePublished - 2015
Event8th European Signal Processing Conference, EUSIPCO 1996 - Trieste, Italy
Duration: Sep 10 1996Sep 13 1996


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