Invention Grant
- Patent Title: Voice coil temperature control based on an estimated voice coil temperature and a threshold
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Application No.: US16042034Application Date: 2018-07-23
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Publication No.: US10250978B1Publication Date: 2019-04-02
- Inventor: Supriyo Palit
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent John R. Pessetto; Charles A. Brill; Frank D. Cimino
- Priority: IN201841007125 20180226
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H04R3/04 ; H03G3/30 ; H03F1/30 ; H03F3/183 ; H03G3/00

Abstract:
A system includes a gain control circuit configured to dynamically select a gain value based on an estimated temperature for a speaker voice coil, a base gain value, and a threshold temperature value. The system also includes a power control circuit configured to determine a power limit value based on the gain value. The system also includes a filter circuit configured to adjust values of a digitized audio signal based on the power limit value. The system also includes a digital-to-analog converter (DAC) coupled to the filter circuit and configured to convert a digital output of the filter circuit to an analog audio signal.
Information query