midily: Convert MIDI to LilyPond file

In leonawicz/tabr: Music Notation Syntax, Manipulation, Analysis and Transcription in R

Convert MIDI to LilyPond file

Description

Convert a MIDI file (.mid) to a LilyPond format (.ly) text file.

Usage

midily(
  midi_file,
  file,
  key = "c",
  absolute = FALSE,
  quantize = NULL,
  explicit = FALSE,
  start_quant = NULL,
  allow_tuplet = c("4*2/3", "8*2/3", "16*2/3"),
  details = FALSE,
  lyric = FALSE
)

Arguments

midi_file	character, MIDI file (.mid). May include an absolute or relative path.
file	LilyPond output file ending in .ly.
key	key signature, defaults to "c".
absolute	logical, print absolute pitches (unavailable in current package version).
quantize	integer, duration, quantize notes on duration.
explicit	logical, print explicit durations.
start_quant	integer, duration, quantize note starts on the duration.
allow_tuplet	character vector, allow tuplet durations. See details.
details	logical, print additional information to console.
lyric	logical, treat all text as lyrics.

Details

Under development/testing. See warning and details below.

This function is a wrapper around the midi2ly() command line utility provided by LilyPond. It inherits all the limitations thereof. LilyPond is not intended to be used to produce meaningful sheet music from arbitrary MIDI files. While lilypond() converts R code score() objects to LilyPond markup directly, MIDI conversion to LilyPond markup by midily() requires LilyPond.

WARNING: Even though the purpose of the command line utility is to convert an existing MIDI file to a LilyPond file, it nevertheless generates a LilyPond file that specifies inclusion of MIDI output. This means when you subsequently process the LilyPond file with LilyPond or if you use miditab() to go straight from your MIDI file to pdf output, the command line tool will also produce a MIDI file output. It will overwrite your original MIDI file if it has the same file name and location!

allow_tuplets = NULL to disallow all tuplets. Fourth, eighth and sixteenth note triplets are allowed. The format is a character vector where each element is duration*numerator/denominator, no spaces. See default argument.

On Windows systems, it may be necessary to specify a path in tabr_options() to both midi2ly and python if they are not already added to the system PATH variable.

Value

nothing returned; a file is written.

See Also

miditab(), tab(), lilypond()

Examples

## Not run: 
if(tabr_options()$midi2ly != ""){
  midi <- system.file("example.mid", package = "tabr")
  outfile <- file.path(tempdir(), "out.ly")
  midily(midi, outfile) # requires LilyPond installation
}

## End(Not run)

leonawicz/tabr documentation built on Sept. 24, 2023, 2:49 p.m.