Method and apparatus for estimating interchannel delay of sound signal

An apparatus for estimating an interchannel delay of a sound signal, the apparatus comprising:

• a calculating unit implemented by a processor, configured to calculate an error between an actual interchannel phase difference and a predicted interchannel phase difference of a sound signal, wherein the predicted interchannel phase difference is predicted according to a predetermined interchannel delay of the sound signal;
• a first determining unit implemented by the processor, configured to determine whether the sound signal is a sound signal in a crosstalk according to whether the error calculated by the calculating unit is within a predetermined range or beyond the predetermined range, the predetermined range being set according to an interchannel delay of a sound signal that is not in the crosstalk;
• and
• a processing unit implemented by the processor, configured to:
• when the first determining unit determines that the sound signal is a sound signal in the crosstalk, set an interchannel delay corresponding to the sound signal to a fixed value.