ACOUSTIC SIGNAL PLAYING METHOD ADAPTIVELY ADJUSTING THE COEFFICIENT OF A FILTER ACCORDING TO AN OUTPUT ACOUSTIC SIGNAL AND A DEVICE THEREOF, CAPABLE OF PLAYING ACOUSTIC SIGNAL COMING NEAR TO AN ACTUAL SOUND WHILE KEEPING THE RELIABILITY OF SPEAKER

摘要

PURPOSE: An acoustic signal playing method adaptively adjusting the coefficient of a filter according to an output signal and a device thereof are provided to improve the sound quality by adaptively adjusting a parameter value of the inner module in case that a distortion generation or a high probability of a distortion generation are detected by analyzing final output signal before outputting through a speaker.;CONSTITUTION: An acoustic signal playing method adaptively adjusting the coefficient of a filter according to an output signal is as follows. A first input acoustic signal is passed through a filter(S510). A output acoustic signal outputting through a speaker. Amplitude information related to the output acoustic signal is obtained(S520). A frequency response parameter related to a frequency response of the filter is decided based on the amplitude information(S530). A coefficient of the filter is adaptively adjusted based on the decided frequency response parameter(S540).;COPYRIGHT KIPO 2012