Device and Method for Calculating Excursion of Diaphragm of Loudspeaker and Method for Controlling Loudspeaker

Number of patents in Portfolio can not be more than 2000

United States of America

APP PUB NO 20170272857A1
SERIAL NO

15433606

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for calculating excursion of a diaphragm of a loudspeaker is provided. The loudspeaker includes a diaphragm and is driven by a voltage signal. The method includes: a) low-pass filtering the voltage signal and a current signal inputted to the loudspeaker to generate a low-pass filtered voltage signal and a low-pass filtered current signal, respectively; b) calculating a direct-current (DC) resistance of the loudspeaker according to the low-pass filtered voltage signal and the low-pass filtered current signal; c) calculating a vibration velocity of the diaphragm according to the voltage signal, the current signal and the DC resistance; and d) calculating the excursion of the diaphragm according to the vibration velocity. Step (a) to step (d) involve real-number calculations.

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Patent Owner(s)

Patent OwnerAddress
REALTEK SEMICONDUCTOR CORPORATIONNO 2 INNOVATION ROAD II HSINCHU SCIENCE PARK HSINCHU 300

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
CHU, CHUNG-SHIH HSINCHU CITY, TW 4 15
HUNG, TIEN-CHIU NEW TAIPEI CITY, TW 4 23
LIN, TSE-EN NEW TAIPEI CITY, TW 1 2
TING, WEI-CHUNG HSINCHU COUNTY, TW 1 2

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