%0 Journal Article %T Characterization and Modelling of Circular Piezoelectric Micro Speakers for Audio Acoustic Actuation %A J. Mendoza-Ló %A pez %A S. Sá %A nchez-Solano %A J. L. Huertas-Dí %A az %J ISRN Mechanical Engineering %D 2012 %I Hindawi Publishing Corporation %R 10.5402/2012/635268 %U http://dx.doi.org/10.5402/2012/635268