E-motors are one of the most important components of today's industrial environment. Currently, the main focus for designing electric drives is energy efficiency, so several new engineering challenges emerge. New components are introduced and because of the intrinsic problem that range implicates in electric mobility, performance parameters such as energy consumption acquire an even more important value. Electric motor manufacturers are increasingly realizing that this must be complemented by including acoustic behavior. Indeed, incorporating sound quality markers into optimization objectives is useful in order to design more high-quality powertrains. Although the noise resulting from e-drives is generally less than the one produced by their Internal Combustion Engines (ICEs) counterparts, it can be characterized by a high tonal tone which compromises heavily sound quality.