Method and apparatus for generating digital score file of song, and storage medium

A method for generating a digital score file that records musical notation of a song, comprising:

• obtaining, by processing circuitry of an information processing apparatus, a candidate audio file satisfying a first condition from audio files of unaccompanied singing of the song without instrumental accompaniment;
• dividing, by the processing circuitry of the information processing apparatus, the candidate audio file into valid audio segments based on timing information of the song;
• extracting pieces of music note information from the valid audio segments, each of the pieces of music note information including at least one data set of a music note in the song, the data set including an onset time, a duration, and a music note value of the music note;
• and
• generating the digital score file based on the pieces of music note information,
• wherein the extracting the pieces of music note information from the valid audio segments comprises:
• for each of the valid audio segments,
• extracting fundamental frequency information from the respective valid audio segment, the fundamental frequency information including at least one fundamental frequency value associated with the respective valid audio segment, and
• when the at least one fundamental frequency value is not zero, adding a play duration of the respective valid audio segment to a segment duration;
• and
• when the segment duration exceeds a preset duration,
• processing the respective valid audio segment to obtain at least one fundamental frequency band,
• obtaining the at least one fundamental frequency value from the at least one fundamental frequency band,
• implementing music notation processing on the at least one fundamental frequency value to obtain at least one music note value, and
• merging the music note values for the valid audio segments to obtain the pieces of music note information associated with the valid audio segments.

An information processing apparatus, comprising processing circuitry configured to:

• obtain audio files of unaccompanied singing of a song without instrumental accompaniment, the audio files being uploaded to the information processing apparatus;
• obtain reply information corresponding to the audio files;
• determine quality levels of the audio files based on the reply information;
• identify a candidate audio file from the audio files, a corresponding quality level of the candidate audio file from the determined quality levels being greater than a threshold;
• and
• after the candidate audio file is identified, generate the digital score file that records musical notation of the song according to the candidate audio file, wherein the processing circuitry is further configured to:
• divide the candidate audio file into valid audio segments based on timing information of the song;
• extract pieces of music note information from the valid audio segments, each of the pieces of music note information including at least one data set of a music note in the song, the data set including an onset time, a duration, and a music note value of the music note;
• and
• generate a digital score file based on the pieces of music note information.

A non-transitory computer-readable medium storing a program executable by a processor to perform:

• obtaining audio files of unaccompanied singing of a song without instrumental accompaniment, the audio files being uploaded to the processor;
• obtaining reply information corresponding to the audio files;
• determining quality levels of the audio files based on the reply information;
• identifying a candidate audio file from the audio files, a corresponding quality level of the candidate audio file from the determined quality levels being greater than a threshold;
• after the candidate audio file is identified, generating the digital score file that records musical notation of the song according to the candidate audio file, the generating the digital score file including:
• dividing the candidate audio file into valid audio segments based on timing information of the song;
• extracting pieces of music note information from the valid audio segments, each of the pieces of music note information including at least one data set of a music note in the song, the data set including an onset time, a duration, and a music note value of the music note;
• and
• generating a digital score file based on the pieces of music note information.