@inproceedings{ca1186086030412fbd32264d4666f553,
title = "Analysis and fast implementation of oversampled modulated filter banks",
abstract = "Oversampled modulated filter banks (OSFBs) are popularly employed for a number of applications such as acoustic echo cancellation in order to reduce the processing complexity of a signal processing algorithm. Hence, an efficient implementation of OSFBs themselves is mandatory. In this paper, a polyphase description is used to remove redundancies in the filter operations and to factorize the OSFB into filter components depending on the prototype filter, and the modulating transform. Based on a state-space representation of this derived polyphase factorization, signal flow graphs can be obtained which permit a very simple and efficient OSFB implementation. The analysis is performed for a number of different classes of OSFBs, and a comparison to existing methods is drawn. ",
keywords = "oversampled filter banks , filter banks, acoustic echo cancellation, fast implementation, analysis, oversampled, modulated filter banks",
author = "Stephan Weiss",
year = "2002",
month = jul,
day = "1",
language = "English",
isbn = "0198507348",
series = "Institute of Mathematics and ITS applications conference series",
publisher = "Clarendon Press",
number = "71",
pages = "263--274",
editor = "McWhirter, {John G. } and Proudler, {Ian K. }",
booktitle = "Mathematics in signal processing V",
note = "5th International Conference on Mathematics in Signal Processing ; Conference date: 18-12-2000 Through 20-12-2000",
}