an audio signal processing method for repairing an anomalous state such as noise , a discontinuity , and a break of sound , comprising detecting the anomalous state of an audio signal , deleting the audio signal in the anomalous segment , deducing the correct audio signal by referring to the waveform of the audio signal before and after the deleted segment , generating a repair signal for repairing the signal in the deleted segment based on the deduced result , inserting the repair signal into the deleted segment , and connecting it to the audio signal before and after the deleted segment .