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05-Buzzer

Introduction​

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Introduction​

Buzzer music library encapsulated by different tones and rhythms through pwm and system time

Case​

Melody​

Notation:
Happy Birthday: c4:4 c4:4 d4:4 c4:4 f4:4 e4:8 r:4 c4:4 c4:4 d4:4 c4:4 g4:4 f4:8 r:4 c4:4 c4:4 c5:4 a4:4 f4:4 e4:4 d4:8 r:4 bb4:4 bb4:4 a4:4 f4:4 g4:4 f4:8

  • For example, c4:2:
    • c: English naming method, representing the tone, corresponding to do~xi, an octave is roughly divided into the 7 tones cdefab.
    • 4: octave, such as 4, is the fourth octave
    • :2: duration, with the default bpm=120 and quarter note as one beat, 1 second 2 beats => 0.5 seconds/beat, 2 represents half of a quarter note, so the duration of c4:2 lasts for 0.25s

    • The bpm parameter represents the speed of the entire piece
      ![image-20240322122728431](https://learn.kittenbot.cn/2024md_pic/image-20240322122728431.png)

Continuous playback and rest​

📑: The following three blocks need to be used together, and the rest beat is essentially a conversion from seconds to beats
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Play preset music​

📑：If you find it troublesome, you can also use the preset music building block directly. Choose some appropriate sounds to create an atmosphere.
It is recommended that you enter the online mode and click Run directly during the debugging phase, because the first parameter type can only be a string, so it is troublesome to listen to all preset audios by writing programs
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