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Merge branch 'master' of https://github.com/Microsoft/pxt-microbit

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Peli de Halleux 2016-06-03 14:25:31 -07:00
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docs/reference/music/ring-tone.md
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# Ring Tone
Play a continuous tone through pin P0.
Play a musical tone through pin `P0` with the pitch as high or low as you say.
The tone will keep playing until you tell it not to.
## Simulator
Simulation of this function is available in many, but not all browsers.
This function only works on the micro:bit and in some browsers.
```sig
music.ringTone(440)
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### Parameters
* `frequency` : [Number](/reference/types/number) - Plays a tone in (Hz)
* a [number](/reference/types/number) that says the tone's
**frequency** (how high-pitched or low-pitched the tone is). This
number is in **Hz** (**Hertz**), which is a measurement of frequency
or pitch.
### Example
Play a sound based on the tile of the device
This program checks the **accelerometer** for the micro:bit's
**acceleration** (how much the micro:bit is speeding up or slowing
down). Then it uses that acceleration to make a tone. If the micro:bit
speeds up, the tone's pitch gets higher, and if it slows down, the
tone's pitch gets lower. It's fun -- try it!
```blocks
basic.forever(() => {
@ -26,5 +34,6 @@ basic.forever(() => {
### See also
[rest](/reference/music/rest), [play tone](/reference/music/play-tone) , [tempo](/reference/music/tempo), [set tempo](/reference/music/set-tempo), [change tempo by](/reference/music/change-tempo-by)
[rest](/reference/music/rest), [play tone](/reference/music/play-tone),
[tempo](/reference/music/tempo), [set tempo](/reference/music/set-tempo),
[change tempo by](/reference/music/change-tempo-by)