Orthonormal minimal structure for n-dimensional denominator-separable digital filters for multiprocessor implementation

A new structure for n-dimensional-separable digital filters is derived based on an orthonormal expansion. The new structure processes well behaved filter parameters that are easily calculated, needs the minimum number of delays and has only lossless and passive substructures that are free from overflow oscillations and have low sensitivity and low roundoff noise. It can be mapped into a systolic multiprocessor array in a straightforward manner.