Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances

Official title: Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means {(combinations of transducers with horns, i.e. front-loaded horns H04R1/30)}

H04R1/28 (Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances) appears on 4,221 US grants and 4,679 published applications in this corpus.