A method for calculating measures of similarity between time signals, which includes: acquiring and comparing data (xi, yj) of time signals (X, Y); assigning a one or a zero to every two compared data (xi, yj), depending on the result of said comparison, creating a data set; determining time sequences with said ones and zeros of the data set, each one being formed by consecutive sub-sequences of ones, separated by discontinuities of zeros; selecting the highest result of accumulated results obtained for each sub-sequence, adding for each determined point i, j of value one said one to the accumulated result of maximum value, from among the accumulated results at a point i−1, j−1 of said sub-sequence, a point i−2, j−1 of a sub-sequence of a second time sequence, and a point i−1, j−2 of a sub-sequence of a third sequence.