# Speaker

Codey's on-board speaker enables Codey to play sound. You can write music, add sound effects, and do other fun stuff with Codey's speaker.

### 1. play sound () <a href="#id-1-play-sound" id="id-1-play-sound"></a>

Make Codey's speaker play a specified sound.

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-1-1.png)

| Sound Effect |          |            |             |             |          |         |
| ------------ | -------- | ---------- | ----------- | ----------- | -------- | ------- |
| hello        | hi       | bye        | yeah        | wow         | laugh    | hum     |
| sad          | sigh     | annoyed    | angry       | scared      | pettish  | curious |
| embarrassed  | ready    | sprint     | snore       | meow        | start    | switch  |
| beeps        | buzz     | air-out    | explosion   | gotcha      | painful  | jump    |
| laser        | level-up | low-energy | metal-clash | prompt-tone | right    | wrong   |
| ringtone     | score    | shot       | step\_1     | step\_2     | activate | warning |

**Example:**

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-1-2.png)

Press Button A. Codey will play the sound "hello".

### 2. play sound () until done <a href="#id-2-play-sound--until-done" id="id-2-play-sound--until-done"></a>

Make Codey's speaker play a specified sound, and wait until it's done.

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-2-1.png)

**Example:**

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-2-2.png)

Press Button A. Codey will play the sound "hello".

### 3. stop all sounds <a href="#id-3-stop-all-sounds" id="id-3-stop-all-sounds"></a>

Make Codey's speaker stop playing all sounds.

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-3-1.png)

**Example:**

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-3-2.png)

Press Button A. Codey will play the sound "hello" for 10 times, and then stop all sounds.

### 4. play note () for () beats <a href="#id-4-play-note--for--beats" id="id-4-play-note--for--beats"></a>

Make Codey's speaker play a specified note for specified number of beats.

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-4-1.png)

**Example:**

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-4-2.png)

Press Button A. Codey will play the note "C4" for 0.25 beat.

### 5. rest for () beats <a href="#id-5-rest-for--beats" id="id-5-rest-for--beats"></a>

Make Codey's speaker stop playing sounds and wait for specified number of beats.

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-5-1.png)

**Example:**

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-5-2.png)

Press Button A. Codey will play the note "C4" for 0.25 beat 5 times, and after waiting for 0.25 beat, play the note "G4" for 0.25 beat 5 times.

### 6. play sound at frequency of () HZ for () secs <a href="#id-6-play-sound-at-frequency-of--hz-for--secs" id="id-6-play-sound-at-frequency-of--hz-for--secs"></a>

Make Codey's speaker play sound at specified frequency for a specified period of time.

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-6-1.png)

**Example:**

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-6-2.png)

Press Button A. Cody will play a 700Hz sound for one second.

### 7. change volume by () <a href="#id-7-change-volume-by" id="id-7-change-volume-by"></a>

Change the sound volmue of Codey's speaker. Input positive number to increase sound volume, or negative number to decrease sound volume.

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-7-1.png)

**Example:**

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-7-2.png)

Press Button A to decrease sound volume of Codey's speaker by 10.

### 8. set volume to ()% <a href="#id-8-set-volume-to" id="id-8-set-volume-to"></a>

Set the sound volume of Codey's speaker to specified percentage (0 \~ 100).

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-8-1.png)

**Example:**

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-8-2.png)

When Codey starts up, the sound volume of the speaker will be set to 60%.

### 9. volume <a href="#id-9-volume" id="id-9-volume"></a>

Report the sound volume of Codey's speaker.

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-9-1.png)

**Example:**

![](http://docs.makeblock.com/codeyrocky/en/block-reference/images/speaker-9-2.png)

Press Button A. The current sound volume of Codey's speaker will be displayed on the screen.