tuneR: quantize – R documentation

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quantize

Functions for the quantization of notes

These functions apply (static) quantization of notes in order to produce sheet music by pressing the notes into bars.

quantize(notes, energy, parts)
quantMerge(notes, minlength, barsize, bars)

`notes`	Series of notes, a vector of integers such as returned by `noteFromFF`. At least one argument (`notes` and/or `energy`) must be specified.
`energy`	Series of energy values, a vector of numerics such as corresponding components of a `Wspec` object.
`parts`	Number of outcoming parts. The `notes` vector is divided into `parts` bins, the outcome is a vector of the modes of all bins.
`minlength`	1/(length of the shortest note). Example: if the shortest note is a quaver (1/8), set `minlength = 8`.
`barsize`	One bar contains `barsize` number of notes of length `minlength`.
`bars`	We expect `bars` number of bars.

quantize returns a list with components:

`notes`	Vector of length `parts` corresponding to the input data The data is binned and modes corresponding to the data in those bins are returned.
`energy`	Same as `notes`, but for the `energy` argument.

quantMerge returns a data.frame with components:

`note`	integer representation of a note (see Arguments).
`duration`	1/duration of a note (see `minlength` in Section Arguments), if `punctuation = FALSE`.
`punctuation`	Whether the note should be punctuated. If `TRUE`, the real duration is 1.5 times the duration given in `duration`.
`slur`	currently always `FALSE`, sensible processing is not yet implemented. It is supposed to indicate the beginning and ending positions of slurs.