Abstract: The present invention increases the flexibility of the modified fast convolution algorithm. In a first exemplary embodiment of the present invention, a block compensator is inserted into the channelizer/de-channelizer processing chain for multiplying data in the processing chain with compensation constants. The block compensator corrects the phase continuity problem associated with the modified fast convolution algorithm to thereby allow unrestricted filter placement. In a second exemplary embodiment, the phase continuity problem is corrected by combining a frequency translation in the frequency domain with a compensatory frequency translation in the time domain. Both techniques increase the flexibility of the modified fast convolution algorithm whilst only marginally increasing computational requirements.

Abstract: The invention relates to a porous body for electrical accumulators which body shows a new structure comprising at least two cohesive layers, at least one of which is a porous layer of sintered metal powder and at least one a thinner layer of solid metal produced by fusion and solidification of one of the external surfaces of the adjacent porous layer. The invention also relates to a method of manufacturing such an electrode body as well as to an electrical accumulator containing at least one such electrode body.