Andrew March marchingband

## midi-note-to-freq.md

      
        
          
            
              
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                YuxiUx
                / midi-note-to-freq.md
            
            
              Last active
              May 20, 2023 07:09
            
              
                How to convert midi note to frequency in C, C++, Python, JS and PHP
              
          
        
      
        
  
      
    JS

function noteToFreq(note) {
    let a = 440; //frequency of A (coomon value is 440Hz)
    return (a / 32) * (2 ** ((note - 9) / 12));
}
PHP

function noteToFreq($note) {