38 lines
729 B
Markdown
38 lines
729 B
Markdown
# Change Tempo By
|
|
|
|
Makes the [tempo](/reference/music/tempo) (speed of a piece of music)
|
|
faster or slower by the amount you say.
|
|
|
|
## Simulator
|
|
|
|
This function only works on the @boardname@ and in some browsers.
|
|
|
|
```sig
|
|
music.changeTempoBy(20)
|
|
```
|
|
|
|
### Parameters
|
|
|
|
* ``bpm`` is a [number](/types/number) that says how much to
|
|
change the bpm (beats per minute, or number of beats in a minute of
|
|
the music that the @boardname@ is playing).
|
|
|
|
### Examples
|
|
|
|
This program makes the music faster by 12 bpm.
|
|
|
|
```blocks
|
|
music.changeTempoBy(12)
|
|
```
|
|
|
|
This program makes the music _slower_ by 12 bpm.
|
|
|
|
```blocks
|
|
music.changeTempoBy(-12)
|
|
```
|
|
|
|
### See also
|
|
|
|
[play tone](/reference/music/play-tone), [ring tone](/reference/music/ring-tone)
|
|
|