Apparatus and method for encoding/decoding audio signal

The present invention relates to an apparatus and method for encoding an audio signal, to an apparatus and method for decoding an audio signal, the audio decoding method according to the present invention includes the steps of generating an audio signal by decoding the input signal; And the waveform of the generated audio signal, due to the acoustic resonance phenomena in the audio signal comprises the step of modifying the waveform for compensating for the waveform to be transformed, human listening structure generating acoustic resonance phenomenon of ERP-DRP resonance phenomenon by using the inverse correction waveform to compensate for it is possible to listen to audio signals of high sound quality is not a major emphasis station through earphones or headphones.