| 发明名称 |
LOUDSPEAKER PROTECTION CIRCUITRY AND METHODS |
| 摘要 |
This application relates to methods and apparatus for thermal protection of a loudspeaker (102). A controller (106) is configured to generate a control signal (Gmod) for modulating the gain of a signal processing chain (101) that drives the loudspeaker. The controller is configured such that the control signal is generated as a function of each of: an indication of voice coil temperature of the loudspeaker (TVC); an indication of power dissipation in the voice coil of the loudspeaker (PVC); and an indication of a reservoir temperature (Tres) of a thermal reservoir for heat flow from the voice coil. The reservoir temperature may be an ambient temperature of the environment or a temperature of a component of the loudspeaker or apparatus that acts as a heat sink. |
| 申请公布号 |
US2017094408(A1) |
申请公布日期 |
2017.03.30 |
| 申请号 |
US201514867758 |
申请日期 |
2015.09.28 |
| 申请人 |
Cirrus Logic International Semiconductor Ltd. |
发明人 |
Napoli Roberto;Lawrence Jason William |
| 分类号 |
H04R3/00;H03G3/00;H04R29/00;H03G3/20 |
主分类号 |
H04R3/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A system for thermal protection of a loudspeaker comprising:
a controller configured to generate a control signal for modulating the gain of a signal processing chain driving said loudspeaker, wherein said controller is configured such that the control signal is generated as a function of each of:
an indication of voice coil temperature of the loudspeaker;an indication of power dissipation in the voice coil of the loudspeaker; andan indication of a reservoir temperature of a thermal reservoir for heat flow from the voice coil. |
| 地址 |
Edinburgh GB |
