A method for correcting a delay between an accompaniment and an unaccompanied sound audio, the method comprising: acquiring (201, 301) accompaniment audio, unaccompanied sound audio and original song audio of a target song, and extracting original song vocal audio from the original song audio, wherein the original song audio is original audio that contains both the accompaniment audio and vocals, the accompaniment audio is audio that does not contain the vocals, the unaccompanied sound audio is vocal audio that does not contain the accompaniment audio; determining a first correlation function curve based on the original song vocal audio and the unaccompanied sound audio, and determining a second correlation function curve based on the accompaniment audio and the original song audio; and correcting (203, 304) a delay between the accompaniment audio and the unaccompanied sound audio based on the first correlation function curve and the second correlation function curve, wherein determining the first correlation function curve based on the original song vocal audio and the unaccompanied sound audio comprises: acquiring a pitch value corresponding to each of a plurality of audio frames contained in the original song vocal audio, and ranking a plurality of acquired pitch values of the original song vocal audio according to a sequence of the plurality of audio frames contained in the original song vocal audio to obtain a first pitch sequence; acquiring a pitch value corresponding to each of a plurality of audio frames contained in the unaccompanied sound audio, and ranking a plurality of acquired pitch values of the unaccompanied sound audio according to a sequence of the plurality of audio frames contained in the unaccompanied sound audio to obtain a second pitch sequence; and determining the first correlation function curve based on the first pitch sequence and the second pitch sequence. acquiring (201, 301) accompaniment audio, unaccompanied sound audio and original song audio of a target song, and extracting original song vocal audio from the original song audio, wherein the original song audio is original audio that contains both the accompaniment audio and vocals, the accompaniment audio is audio that does not contain the vocals, the unaccompanied sound audio is vocal audio that does not contain the accompaniment audio; determining a first correlation function curve based on the original song vocal audio and the unaccompanied sound audio, and determining a second correlation function curve based on the accompaniment audio and the original song audio; and correcting (203, 304) a delay between the accompaniment audio and the unaccompanied sound audio based on the first correlation function curve and the second correlation function curve, wherein determining the first correlation function curve based on the original song vocal audio and the unaccompanied sound audio comprises: acquiring a pitch value corresponding to each of a plurality of audio frames contained in the original song vocal audio, and ranking a plurality of acquired pitch values of the original song vocal audio according to a sequence of the plurality of audio frames contained in the original song vocal audio to obtain a first pitch sequence; acquiring a pitch value corresponding to each of a plurality of audio frames contained in the unaccompanied sound audio, and ranking a plurality of acquired pitch values of the unaccompanied sound audio according to a sequence of the plurality of audio frames contained in the unaccompanied sound audio to obtain a second pitch sequence; and determining the first correlation function curve based on the first pitch sequence and the second pitch sequence. acquiring a pitch value corresponding to each of a plurality of audio frames contained in the original song vocal audio, and ranking a plurality of acquired pitch values of the original song vocal audio according to a sequence of the plurality of audio frames contained in the original song vocal audio to obtain a first pitch sequence; acquiring a pitch value corresponding to each of a plurality of audio frames contained in the unaccompanied sound audio, and ranking a plurality of acquired pitch values of the unaccompanied sound audio according to a sequence of the plurality of audio frames contained in the unaccompanied sound audio to obtain a second pitch sequence; and determining the first correlation function curve based on the first pitch sequence and the second pitch sequence.