Audio signal processing method and apparatus

The application provides an audio signal processing method and apparatus. The features of a front sound source in left and right channel output signals are improved, so it is less possible that a user may misjudge that the front sound source comes from the back. The method includes the steps of receiving a left input channel signal, a middle channel signal and a right input channel signal collected by a binaural audio collecting device; determining a source azimuth between a sound source and a head die of the binaural audio collecting device; performing convolution of head related impulse response (HRIR) on the middle channel signal and a left ear of exaggerated ears corresponding to the source azimuth so as to obtain an auxiliary left channel signal; performing convolution of head related impulse response (HRIR) on the middle channel signal and a right ear of the exaggerated ears corresponding to the source azimuth so as to obtain an auxiliary right channel signal; and obtaining a left output channel signal through the left input channel signal and the auxiliary left channel signal, and obtaining a right output channel signal through the right input channel signal and the auxiliary right channel signal.