Audio onset detection method and apparatus

An audio onset detection device, comprising:

• at least one processor;
• and
• at least one memory communicatively coupled to the at least one processor and storing instructions that upon execution by the at least one processor cause the at least one processor to perform operations comprising:
• dividing an audio signal of an audio into a plurality of sub audio signals, and converting the plurality of sub audio signals respectively into frequency domain signals, wherein each of the plurality of sub audio signals corresponds to one of a plurality of frequency bands;
• determining a plurality of first speech spectrum parameters corresponding to the plurality of frequency bands, respectively;
• determining, for each of the frequency bands, a second speech spectrum parameter of a current frequency band based on a first speech spectrum parameter of the current frequency band and a first speech spectrum parameter of a frequency band chronologically before the current frequency band, wherein the determining, for each of the plurality of frequency bands, a second speech spectrum parameter of a current frequency band based on a first speech spectrum parameter of the current frequency band and a first speech spectrum parameter of a frequency band chronologically before the current frequency band further comprises:
• with respect to each of the plurality of frequency bands, determining a mean value of the first speech spectrum parameter of the current frequency band based on the first speech spectrum parameter of the current frequency band and the first speech spectrum parameter of the frequency band chronologically before the current frequency band, and determining the second speech spectrum parameter of the current frequency band based on the determined mean value;
• and
• determining one or more onsets of a note and a syllable in the audio based on second speech spectrum parameters of the frequency bands.

A non-transitory computer readable storage medium, storing non-transitory computer readable instructions that, when executed by a computer, causes the computer to perform operations comprising:

• dividing an audio signal of an audio into a plurality of sub audio signals, and converting the plurality of sub audio signals respectively into frequency domain signals, wherein each of the plurality of sub audio signals corresponds to one of a plurality of frequency bands;
• determining a plurality of first speech spectrum parameters corresponding to the plurality of frequency bands, respectively;
• determining, for each of the frequency bands, a second speech spectrum parameter of a current frequency band based on a first speech spectrum parameter of the current frequency band and a first speech spectrum parameter of a frequency band chronologically before the current frequency band, wherein the determining, for each of the plurality of frequency bands, a second speech spectrum parameter of a current frequency band based on a first speech spectrum parameter of the current frequency band and a first speech spectrum parameter of a frequency band chronologically before the current frequency band further comprises:
• with respect to each of the plurality of frequency bands, determining a mean value of the first speech spectrum parameter of the current frequency band based on the first speech spectrum parameter of the current frequency band and the first speech spectrum parameter of the frequency band chronologically before the current frequency band, and determining the second speech spectrum parameter of the current frequency band based on the determined mean value;
• and
• determining one or more onsets of a note and a syllable in the audio based on second speech spectrum parameters of the frequency bands.