专利检索 ap:("Motorola, Inc.,A Corporation of the State of Delaware;") AND inv:"MANTOVANI, Jose Ricardo Baddini" 第 1 页

1.

发明公开
ELECTRICAL IMPEDANCE BASED AUDIO COMPENSATION IN AUDIO DEVICES AND METHODS THEREFOR 审中-公开
标题翻译：音频补偿基电阻抗，视听设备和配套程序THEREFOR

公开(公告)号：EP1552608A2

公开(公告)日：2005-07-13

申请号：EP03771740.2

申请日：2003-07-22

申请人： Motorola, Inc.,A Corporation of the State of Delaware;

发明人： MANTOVANI, Jose Ricardo Baddini

IPC分类号： H03G11/00 , H04R29/00 , H04B15/00

CPC分类号： H03G5/22 , H04B1/10 , H04R3/00

摘要： An audio device, for example a wireless communications handset, including a sound transducer (410) coupled to a compensated audio signal output of an audio compensator (450), a mismatch detection circuit (430) having a first input coupled to the compensated audio signal output of the audio compensator (450), the mismatch detection circuit (430) having a second input coupled to the sound transducer (410), the mismatch detecting circuit having an output corresponding to a mismatch between a reference electrical impedance of the sound transducer and an actual electrical impedance of the sound transducer, a compensation estimator (440) having an input coupled to the output of the mismatch detection circuit, the compensation estimator having an audio compensation output coupled to a compensation input of the audio compensator.