readMidi: Read a MIDI file

In tuneR: Analysis of Music and Speech

Read a MIDI file

Description

A MIDI file is read and returned in form of a structured data frame containing most event information (minus some meta events and minus all system events). For details about the represented information see the reference given below.

Usage

readMidi(file)

Arguments

file	Filename of MIDI file.

Value

A data frame consisting of columns

time	Time or delta-time of the events, depending on the MIDI format.
event	A factor indicating the event.
type	An integer indicating the type of a “meta event”, otherwise NA.
channel	The channel number or NA if not applicable.
parameter1	First parameter of an event, e.g. a representation for a note in a “note event”.
parameter2	Second parameter of an event.
parameterMetaSystem	Information in a “meta event”, currently all meta events are converted to a character representation (of hex, if all fails), but future versions may have more appropriate representations.
track	The track number.

Please see the given reference about the MIDI file format about details.

Note

The data structure may be changed or extended in future versions.

Author(s)

Uwe Ligges and Johanna Mielke

References

A good reference about the Midi file format can be found at http://www.music.mcgill.ca/~ich/classes/mumt306/StandardMIDIfileformat.html.

See Also

The function getMidiNotes extracts a more readable representation of note events only.

You may also want to read Wave (readWave) or MP3 (readMP3).

Examples

content <- readMidi(system.file("example_files", "Bass_sample.mid", package="tuneR"))
str(content)
content

tuneR documentation built on May 29, 2024, 11:28 a.m.