发明名称 |
ELECTRICAL IMPEDANCE BASED AUDIO COMPENSATION IN AUDIO DEVICES AND METHODS THEREFOR |
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. |
申请公布号 |
WO2004012476(A2) |
申请公布日期 |
2004.02.05 |
申请号 |
WO2003US23008 |
申请日期 |
2003.07.22 |
申请人 |
MOTOROLA, INC., A CORPORATION OF THE STATE OF DELAWARE |
发明人 |
MANTOVANI, JOSE RICARDO BADDINI |
分类号 |
H04R1/00;H03G5/22;H04B1/10;H04R3/00 |
主分类号 |
H04R1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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