1. A method in a signal processing device of re-sampling a signal represented by a plurality of input sample values, comprising calculating an output sample value for a desired time instant between any two time instants of the input samples by performing a procedure comprising: selecting a current set of values from the input sample values, calculating a new set of values by up-sampling the current set of values, selecting a subset of values from the calculated new set of values and the current set of values surrounding the desired time instant of the output sample value, calculating the output sample value using at least one value of the selected subset of values, and wherein: the calculation of a new set of values and the selection of a subset of values from the new set and the current set of is iterated a specific number of times, wherein during the iteration the current set of values is set to the selected subset of values.