Suppression of parasitic oscillations in wave digital filters Export

@article{citeulike:2367046, abstract = {Parasitic oscillations can occur in digital filters due to the granularity of the signal and to overflow. It is shown that for wave digital filters, the earlier concept of pseudopower leads to a function called stored pseudopower, from which a simple criterion guaranteeing absence of parasitic oscillations can be derived. For fixed-point two's-complement arithmetic, this criterion can be taken into account by particularly simple requirements for the adaptor output signals. A special type of calculus is developed which makes it possible to derive the corresponding simple requirements for the chopping operations at the various stages of the signal processing in the adaptors. The method is extended to cover scaling.}, author = {Fettweis, A. and Meerkotter, K.}, booktitle = {Circuits and Systems, IEEE Transactions on}, citeulike-article-id = {2367046}, citeulike-linkout-0 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1084034}, journal = {Circuits and Systems, IEEE Transactions on}, keywords = {low\_sens\_filter}, number = {3}, pages = {239--246}, posted-at = {2008-02-12 20:11:01}, priority = {2}, title = {Suppression of parasitic oscillations in wave digital filters}, url = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1084034}, volume = {22}, year = {1975} }

TY - JOUR ID - citeulike:2367046 L3 - citeulike-article-id:2367046 N2 - Parasitic oscillations can occur in digital filters due to the granularity of the signal and to overflow. It is shown that for wave digital filters, the earlier concept of pseudopower leads to a function called stored pseudopower, from which a simple criterion guaranteeing absence of parasitic oscillations can be derived. For fixed-point two's-complement arithmetic, this criterion can be taken into account by particularly simple requirements for the adaptor output signals. A special type of calculus is developed which makes it possible to derive the corresponding simple requirements for the chopping operations at the various stages of the signal processing in the adaptors. The method is extended to cover scaling. IS - 3 JF - Circuits and Systems, IEEE Transactions on EP - 246 TI - Suppression of parasitic oscillations in wave digital filters VL - 22 T2 - Circuits and Systems, IEEE Transactions on SP - 239 KW - low_sens_filter AU - Fettweis, A AU - Meerkotter, K PY - 1975/// UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1084034 ER -