imclab / midiutils

A series of methods to work with MIDI

MIDIUtils

Methods for dealing with MIDI data (note numbers, note names, frequencies, etc).

Currently available methods

noteNameToNoteNumber( name )

Returns the MIDI note number corresponding to the note name.

MIDIUtils.noteNameToNoteNumber( 'A-0' );    // returns 21
MIDIUtils.noteNameToNoteNumber( 'C-4' );    // returns 60

noteNumberToFrequency( number )

Returns the frequency represented by noteNumber.

MIDIUtils.noteNumberToFrequency( 69 ); // returns 440 Hz -- i.e. A-4

noteNumberToName( number )

Returns the MIDI note name corresponding to the note number.

MIDIUtils.noteNumberToName( 21 ); // returns 'A-0'

frequencyToNoteNumber( frequency )

Returns the note number that corresponds to this frequency.

MIDIUtils.frequencyToNoteNumber( 440.000 ); // returns 69