4 - Algorithm $AI$ that select the intensity values '

The intensities are selected on the base of ten inside groups to the algorithm, Each of which is characterized by a specific sequence of intensity values. These groups have been elaborate in the intention to apply "regions" of intensity, in relationship to a value, given in the start triple $a,b,c$. Among these ten groups, each of which it contains 12 values of intensity, one is assumed in relationship to the only value $\vert a - b \vert$. This value individualizes therefore the group of intensity to apply to the sequence of series. Simply, if $\vert a-b \vert = 5$, it will to be assumed group 5. This group contains 12 values of intensity, and is able to be represented as follows:

$${G} = \left(\begin{array}{cccccccccccc} mp & mf & f & ff & fff & mp & mf & f & ff & fff & mp & mf \end{array}\right)$$

The single musical intensity is selected in base to the random value $j$. If, for example, $j=7$, it will be selected as the seventh value of intensity present in the group (in this case the group 5). In reference to the current example, it is selected therefore the value $mf$.