Convert string to pitch notation in javascript

Question

I have for ex. string t0 means in treble clef on 0 position. In pitch notation is B4

So t1 = C5 , t-1 = A4 , t-2 = G4...

Should I create every single string in array to map all notes, or could be done easily? Thx.

Answer 1

Is this what you're looking for?

let curT = -22;
const letters = ['A', 'B', 'C', 'D', 'E', 'F', 'G'];
let result = {};

for (let i=0; i < 52; i++) {
  const letNum = `${letters[i % 7]}${(parseInt(i / 7) + 1)}`;
  result[`t${curT}`] = letNum;
  curT += 1;
}
console.log(result);