//declare hertz Notes object and create oscillator audio context. // call notes from hn json object, plugging them into oscillator audio context, using the k function(gain, freq, duration). //try incorporating loops to create repeating melodies.

hertz-notes-oscillator-beeps.js

//declare hertz Notes object and create oscillator audio context. 
// call notes from hn json object, plugging them into oscillator audio context, using the k function(gain, freq, duration).
//try incorporating loops to create repeating melodies. 

//Note naming convention: "s" indicates sharp, and "b" indicates flat. The octave number applies to both for the half steps.
let hnStr ='{"c0":16.35,"csDb0":17.32,"d0":18.35,"dsEb0":19.45,"e0":20.6,"f0":21.83,"fsGb0":23.12,"g0":24.5,"gsAb0":25.96,"a0":27.5,"asBb0":29.14,"b0":30.87,"c1":32.7,"csDb1":34.65,"d1":36.71,"dsEb1":38.89,"e1":41.2,"f1":43.65,"fsGb1":46.25,"g1":49,"gsAb1":51.91,"a1":55,"asBb1":58.27,"b1":61.74,"c2":65.41,"csDb2":69.3,"d2":73.42,"dsEb2":77.78,"e2":82.41,"f2":87.31,"fsGb2":92.5,"g2":98,"gsAb2":103.83,"a2":110,"asBb2":116.54,"b2":123.47,"c3":130.81,"csDb3":138.59,"d3":146.83,"dsEb3":155.56,"e3":164.81,"f3":174.61,"fsGb3":185,"g3":196,"gsAb3":207.65,"a3":220,"asBb3":233.08,"b3":246.94,"c4":261.63,"csDb4":277.18,"d4":293.66,"dsEb4":311.13,"e4":329.63,"f4":349.23,"fsGb4":369.99,"g4":392,"gsAb4":415.3,"a4":440,"asBb4":466.16,"b4":493.88,"c5":523.25,"csDb5":554.37,"d5":587.33,"dsEb5":622.25,"e5":659.26,"f5":698.46,"fsGb5":739.99,"g5":783.99,"gsAb5":830.61,"a5":880,"asBb5":932.33,"b5":987.77,"c6":1046.5,"csDb6":1108.73,"d6":1174.66,"dsEb6":1244.51,"e6":1318.51,"f6":1396.91,"fsGb6":1479.98,"g6":1567.98,"gsAb6":1661.22,"a6":1760,"asBb6":1864.66,"b6":1975.53,"c7":2093,"csDb7":2217.46,"d7":2349.32,"dsEb7":2489.02,"e7":2637.02,"f7":2793.83,"fsGb7":2959.96,"g7":3135.96,"gsAb7":3322.44,"a7":3520,"asBb7":3729.31,"b7":3951.07,"c8":4186.01,"csDb8":4434.92,"d8":4698.64,"dsEb8":4978.03}';
let hn = JSON.parse(hnStr);
console.log(hn.c0);

//set up oscillator audio context (gain, frequency, duration)
a=new AudioContext()
function k(w,x,y){
 console.log(w+x+y)
  v=a.createOscillator()
  u=a.createGain()
  v.connect(u)
  v.frequency.value=x
  v.type="square"
  u.connect(a.destination)
  u.gain.value=w*0.01
  v.start(a.currentTime)
  v.stop(a.currentTime+y*0.001)
}
//beep once or twice after audio is set up. 
// gain, frequency, duration
k(7,hn.e3,350); k(7,hn.e4,340);  k(7,hn.e5,370);