Methods, systems, and media for seamless audio melding between songs in a playlist

A system for transitioning between audio items in playlists, the system comprising:

• a hardware processor that is configured to:
• identify a sequence of audio items in a playlist of audio items, wherein the sequence of audio items includes a first audio item and a second audio item that is to be played subsequent to the first audio item;
• and
• modify an end portion of the first audio item and a beginning portion of the second audio item, wherein the end portion of the first audio item and the beginning portion of the second audio item are to be played concurrently to transition between the first audio item and the second audio item, wherein the end portion of the first audio item and the beginning portion of the second audio item have an overlap duration, and wherein modifying the end portion of the first audio item and the beginning portion of the second audio item comprises (i) identifying, for one or more frequency bands in a spectrogram that includes the end portion of the first audio item and the beginning portion of the second audio item, a window over which the spectrogram within the end portion of the first audio item and the spectrogram within the beginning portion of the second audio item have a particular cross-correlation and (ii) modifying the end portion of the first audio item in the spectrogram and the beginning portion of the second audio item in the spectrogram such that amplitudes of frequencies within the frequency band decrease within the spectrogram over the end portion of the spectrogram and that amplitudes of frequencies within the frequency band increase within the spectrogram over the beginning portion of the spectrogram.

A computer-readable medium containing computer executable instructions that, when executed by a processor, cause the processor to perform a method for transitioning between audio items in playlists, the method comprising:

• identifying a sequence of audio items in a playlist of audio items, wherein the sequence of audio items includes a first audio item and a second audio item that is to be played subsequent to the first audio item;
• and
• modifying an end portion of the first audio item and a beginning portion of the second audio item, wherein the end portion of the first audio item and the beginning portion of the second audio item are to be played concurrently to transition between the first audio item and the second audio item, wherein the end portion of the first audio item and the beginning portion of the second audio item have an overlap duration, and wherein modifying the end portion of the first audio item and the beginning portion of the second audio item comprises (i) identifying, for one or more frequency bands in a spectrogram that includes the end portion of the first audio item and the beginning portion of the second audio item, a window over which the spectrogram within the end portion of the first audio item and the spectrogram within the beginning portion of the second audio item have a particular cross-correlation and (ii) modifying the end portion of the first audio item in the spectrogram and the beginning portion of the second audio item in the spectrogram such that amplitudes of frequencies within the frequency band decrease within the spectrogram over the end portion of the spectrogram and that amplitudes of frequencies within the frequency band increase within the spectrogram over the beginning portion of the spectrogram.