Patent ID: 8085939
Filing Date: 2011-12-27
Classification: H04R

Abstract:
1. A stereophonic sound reproduction system for compensating a low frequency signal, the system comprising: a crosstalk removing unit configured to generate left and right speaker input signals by removing cross-talk from the stereophonic sound, the stereophonic sound comprising left and right signals; a mono component signal extracting unit configured to extract a mono component signal from the stereophonic sound by performing low pass filtering; a compensation gain calculating unit configured to calculate left and right compensation gains based on a power difference between the left and right signals of the stereophonic sound; a compensation mono component signal generating unit configured to generate left and light compensation mono component signals by multiplying the extracted mono component signal by the calculated left and right compensation gains; and an adder configured to generate final speaker input signals by adding the left speaker input signal to the left compensation mono component signal and adding the right speaker input signal to the right compensation mono component signal, wherein the left and right compensation gains are increased when the absolute value of the power difference between the left and right signals of the stereophonic sound is decreased.