Metrical grid inference for free rhythm musical input

摘要

Computer-based methods infer a metrical grid from music that has been input without a predetermined time signature or tempo, enabling such free rhythm input to be annotated with the inferred grid, and stored and transcribed as a musical score. The methods use Bayesian modeling techniques, in which an optimal metrical grid is inferred by identifying the metrical grid that best explains the given sequence of notes by maximizing the posterior probability that it represents the note sequence. Prior musical input from a given user as well as explicit information about the musical style of the input may be used to improve the accuracy of the transcription.

主权项

1. A method for free rhythm musical input, the method comprising:
receiving musical input comprising a sequence of notes; determining an optimal metrical grid corresponding to the sequence of notes, wherein the optimal metrical grid is defined as the metrical grid that optimally represents the sequence of notes, and wherein determining the optimal metrical grid is based in part on an a priori probability of the occurrence of the optimal metrical grid, wherein the a priori probability is independent of the sequence of notes; annotating the musical input with the optimal metrical grid; and storing a representation of the annotated musical input.