Abstract: A transversal filter having an overall impulse response of the form ##EQU1## and producing, from an applied input x(t) an output ##EQU2## where y(t) is obtained by lowpass filtering of a waveform z(t) in use generated in the filter, where z(t) takes the form: ##EQU3## where h.sub.i represents a set of stored coefficients,f(.tau.) is an impulse response accounting for fixed linear filtering at the input and output, independent of the settings h.sub.i, and.delta.(.tau.-.tau..sub.i) is the Dirac delta function defined as a function of time interval .tau. and of a set of time delays .tau..sub.i, where .tau..sub.i is not equal to iT.