System and method for conforming an audio input to a musical key

摘要

A system and method for conforming an audio input to a musical key. Audio input is received and the musical key is determined. Sequentially for each consecutive note, a pitch value for each note and an interval between each preceding and subsequent note is determined; alternative subsequent notes based on the musical key and the pitch value of the subsequent note are determined; each interval between each alternative subsequent note and each respective note of the alternative subsequent notes corresponding to the preceding note is scored based on the interval between the preceding note and the subsequent note of the audio input; and a best interval is selected for each alternative subsequent note. A best-match note is selected for each note of the audio input based on the best intervals of all the notes, and each audio input note is conformed to a frequency of the best-match note.

主权项

1. A method of conforming an audio input to a musical key, the method comprising:
receiving an audio input; determining a musical key of the audio input; sequentially for each consecutive note of the audio input,
determining a pitch value for a preceding note and a subsequent note and an interval between the preceding note and the subsequent note of the audio input,selecting a plurality of alternative subsequent notes for each subsequent note based on the determined musical key and the determined pitch value of the subsequent note,scoring each interval between each alternative subsequent note and each respective note of a selected plurality of alternative subsequent notes corresponding to the preceding note based on the interval between the preceding note and the subsequent note of the audio input,selecting a best interval for each alternative subsequent note based on the scored intervals, andselecting a best-match note for each note of the audio input based on the best intervals of all of the plurality of notes of the audio input; and conforming each note of the audio input to a frequency of each respective best-match note.