Title:
SPEAKER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2021/179296
Kind Code:
A1
Abstract:
A method of regulating power supply to a speaker and a system for regulating power supply to a speaker comprising a generating (S310) of a low frequency signal output to the speaker, sensing (S330) a current and a voltage of the speaker after the low frequency signal is output to the speaker, measuring an impedance of the speaker based on the current and voltage, determining (S340) a temperature of the speaker and comparing with a threshold value, and lowering (S360) a power supply to the speaker where the temperature is above the threshold value.
Inventors:
WEI DING (CN)
Application Number:
PCT/CN2020/079260
Publication Date:
September 16, 2021
Filing Date:
March 13, 2020
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTRUMENTS JAPAN LTD (JP)
TEXAS INSTRUMENTS JAPAN LTD (JP)
International Classes:
H04R3/00
Domestic Patent References:
| WO2010135294A1 | 2010-11-25 |
Foreign References:
| US20130077796A1 | 2013-03-28 | |||
| CN107222812A | 2017-09-29 | |||
| US20070098190A1 | 2007-05-03 | |||
| CN104038882A | 2014-09-10 |
Attorney, Agent or Firm:
LEE AND LI - LEAVEN IPR AGENCY LTD. (CN)
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