<p>An acoustic actuator comprises a support layer (3), in which a self-supporting structure (1) is defined which is connected to the support layer (3) by means of at least two suspensions (7), at least one magnetostrictive layer (4) which has been put on the support layer (3) and is provided at least in part on the self-supporting structure (1), and means (2; 5) for generating a magnetic field in the magnetostrictive layer (4). The way in which the loudspeaker works is based on the magnetostrictive effect, which results in a change in the dimensions of the self-supporting structure in an alternating magnetic field. This causes the self-supporting structure to oscillate.</p>
申请公布号
WO2009004000(A1)
申请公布日期
2009.01.08
申请号
WO2008EP58436
申请日期
2008.07.01
申请人
SIEMENS AUDIOLOGISCHE TECHNIK GMBH;BAFFOUN, BASSEM;LERCH, REINHARD;SUTOR, ALEXANDER;WEISTENHOEFER, CHRISTIAN
发明人
BAFFOUN, BASSEM;LERCH, REINHARD;SUTOR, ALEXANDER;WEISTENHOEFER, CHRISTIAN