//低音
//1 - do - 262Hz
//2 - re - 294Hz
//3 - mi - 330Hz
//4 - fa - 349Hz
//5 - so - 392Hz
//6 - la - 440Hz
//7 - si - 494Hz
//中音
//1 - do - 523Hz
//2 - re - 587Hz
//3 - mi - 659Hz
//4 - fa - 698Hz
//5 - so - 784Hz
//6 - la - 880Hz
//7 - si - 988Hz
//高音
//1 - do - 1046Hz
//2 - re - 1175Hz
//3 - mi - 1318Hz
//4 - fa - 1397Hz
//5 - so - 1568Hz
//6 - la - 1760Hz
//7 - si - 1976Hz
//高中低音的实际频率 Hz
uint16_t music_steps[3][7] = {{262,294,330,349,392,440,494}, {523,587,659,698,784,880,988}, {1046,1175,1318,1397,1568,1760,1976}};
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