METHOD AND APPARATUS FOR AUDIO SIGNAL REPRODUCTION BY ADAPTIVELY CONTROLLING OF FILTER COEFFICIENT

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 prevent the reliability of an audio system and speaker from being destroyed due to a distortion generation of acoustic signals or the energy which does not intend because elements which does not suitable for processing or in which a speaker cannot process are eliminated from the acoustic signals. 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).