n the original sound and the output can be seen in Figure <a href="#fig:melspecs" data-reference-type="ref" data-reference="fig:melspecs">[fig:melspecs]</a> (b.2), and it evidences the elements that were removed from the original sound. Better results are achieved by an extension to this design (see <a href="#function" data-reference-type="ref" data-reference="function">[function]</a>). The additive element of (a) occurs between the output of the filter and the original sound, which only then is fed back in