发明名称 |
DEVICES AND METHODS FOR ENHANCING THE FREQUENCY OUTPUT OF A PORTABLE AUDIO DEVICE |
摘要 |
<p>Disclosed are passive acoustic structures, portable audio devices configured for use with the passive acoustic structures and methods for enhancing the frequency output of a speaker of a portable device configured for use with a disclosed passive acoustic structure. The disclosed portable audio device may include an opening proximal a speaker cavity of the device, a shutter or door to open and close the opening so that the device interoperates with a docking station of a passive acoustic structure including a labyrinth or a transmission line system that may increase the frequency range of the system. For an end user to experience the music and multimedia features of a portable audio device, and in particular a mobile communication device, the above-described passive acoustic structure may provide a bass enhancement for the typically small loudspeaker of a portable audio device with no additional loudspeaker and therefore no additional circuitry.</p> |
申请公布号 |
EP2235962(A4) |
申请公布日期 |
2011.05.18 |
申请号 |
EP20080869181 |
申请日期 |
2008.12.17 |
申请人 |
MOTOROLA MOBILITY, INC. |
发明人 |
CHEN, SHAOHAI;CLARK, JOEL, A.;STEUER, PAUL, R.;ZUREK, ROBERT, A.;ADY, ROGER, W.;DAVIS, GILES |
分类号 |
H04R1/02;H04M1/12;H04R1/28 |
主分类号 |
H04R1/02 |
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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