声音#

介绍#

VEX IQ（第二代）大脑可以使用“声音”类别的积木，通过其内置扬声器发出声音。这些积木可以播放预加载的音效或音符。

对于以下示例，构造的 Brain 包含对 Sound 方法的访问权限，并且在本 API 文档的所有后续示例中引用这些方法时都将使用它。

以下是所有可用方法的列表：

动作——播放来自大脑的声音。

  • play_sound – Play a preset sound from the Brain.

  • play_note – Play a musical note from the Brain.

  • sound_off – Stop the currently playing sound.

行动#

play_sound#

play_sound plays one of the brain’s built-in sounds.

Usage:
brain.play_sound(sound)

范围

描述

sound

从大脑播放的指定声音。

声音名称

播放声音

SoundType.ALARM

SoundType.ALARM2

SoundType.DOOR_CLOSE

SoundType.FILLUP

SoundType.HEADLIGHTS_OFF

SoundType.HEADLIGHTS_ON

SoundType.POWER_DOWN

SoundType.RATCHET

SoundType.RATCHET2

SoundType.SIREN

SoundType.SIREN2

SoundType.TADA

SoundType.TOLLBOOTH

SoundType.WRENCH

SoundType.WRONG_WAY

SoundType.WRONG_WAY_SLOW

 

# Play the TADA sound from the brain
brain.play_sound(SoundType.TADA)

play_note#

play_note plays a specific note for a specific duration in milliseconds.

Usage:
brain.play_note(octave, note, duration)

参数

描述

octave

Either the low or high octave:

  • 3 – Low octave
  • 4 – High octave

note

The note to play:

  • 0 – C
  • 1 – D
  • 2 – E
  • 3 – F
  • 4 – G
  • 5 – A
  • 6 – B

duration

可选。音符播放的时长（以毫秒为单位），最长为 500 毫秒。如果未提供时长，则默认时长为 500 毫秒。

 
# Play a quarter note C and half note F
brain.play_note(4, 0, 250)
brain.play_note(4, 3, 500)

sound_off#

sound_off stops a sound that is currently playing.

Usage:
brain.sound_off()

参数

描述

该方法没有参数。

 
# Stop any sound that is playing on the brain
brain.play_sound(SoundType.POWER_DOWN)
wait(0.2, SECONDS)
brain.sound_off()
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