6 Play MIDI music

Music

We provide a MIDI playback function module, it can be specified on the buzzer PWM output, thus playing out music, although you may not need to know this.

Well, without further nonsense, click on music, the board has been pre-connected to a built-in buzzer, its pin position is 25.

A side note: don't install a piezoelectric buzzer. It only plays a single tone.

The code is as follows (refer to the Microbit documentation for the interface)

import music
music.play(music.NYAN)

You can see the following list, which is our built-in music.

music.DADADADUM
music.ENTERTAINER
music.PRELUDE
music.ODE
music.NYAN
music.RINGTONE
music.FUNK
music.BLUES
music.BIRTHDAY
music.WEDDING
music.FUNERAL
music.PUNCHLINE
music.PYTHON
music.BADDY
music.CHASE
music.BA_DING
music.WAWAWAWAA
music.JUMP_UP
music.JUMP_DOWN
music.POWER_UP
music.POWER_DOWN

Pick some out and listen. There should be something you like

Create a song of your own

To write a list of Python [" c4:4 ", "D4", "C", "e8 "] is to write a music.

How do you understand that?

Each element can be thought of as a note whose format follows:

NOTE[octave][:duration]

The first step is to have a little basic understanding of music theory.

NOTE refers to the scale of this node. In common terms, C, D, E, F, G, A, B in music are scales. For example, "C" refers to do, so C, D, E, F, G, A, B is do, re, mi, fa, so, la xi.

Octave refers to the octave of this node, octave refers to the interval relationship. To put it simply, you sing 1, 2, 3, 4, 5, 6, 7, 1 (note: CDEFGAB for 1234567). The first one is the lower octave of the last one, and the last one is the higher octave of the first one.

Duration refers to the number of duration of notes played by the node.

For example:

"C4:4" corresponds to the note of C (Do) in the 4 (middle part), and then :4 refers to the duration of four beats, the default duration of which is 125 ms, that is, the duration of play is 0.5s.

If you name the node NOTE R then the speaker won't play any sound for the specified amount of time.

To explain this, let's look at the case in the following chapter.