Musical notes mapped to their frequencies in Hz

MusicalNotes.swift

let musicalNotes = [
    // name + octave: frequency (Hz)
    "C0": 16.35,
    "C#0": 17.32,
    "D0": 18.35,
    "D#0": 19.45,
    "E0": 20.60,
    "F0": 21.83,
    "F#0": 23.12,
    "G0": 24.50,
    "G#0": 25.96,
    "A0": 27.50,
    "A#0": 29.14,
    "B0": 30.87,
    "C1": 32.70,
    "C#1": 34.65,
    "D1": 36.71,
    "D#1": 38.89,
    "E1": 41.20,
    "F1": 43.65,
    "F#1": 46.25,
    "G1": 49.00,
    "G#1": 51.91,
    "A1": 55.00,
    "A#1": 58.27,
    "B1": 61.74,
    "C2": 65.41,
    "C#2": 69.30,
    "D2": 73.42,
    "D#2": 77.78,
    "E2": 82.41, // Guitar low-E string
    "F2": 87.31,
    "F#2": 92.50,
    "G2": 98.00,
    "G#2": 103.83,
    "A2": 110.00, // Guitar A string
    "A#2": 116.54,
    "B2": 123.47,
    "C3": 130.81,
    "C#3": 138.59,
    "D3": 146.83, // Guitar D string
    "D#3": 155.56,
    "E3": 164.81,
    "F3": 174.61,
    "F#3": 185.00,
    "G3": 196.00, // Guitar G string
    "G#3": 207.65,
    "A3": 220.00,
    "A#3": 233.08,
    "B3": 246.94, // Guitar B string
    "C4": 261.63, // Middle C
    "C#4": 277.18,
    "D4": 293.66,
    "D#4": 311.13,
    "E4": 329.63, // Guitar high-E string
    "F4": 349.23,
    "F#4": 369.99,
    "G4": 392.00,
    "G#4": 415.30,
    "A4": 440.00,  // Standard tuning fork A
    "A#4": 466.16,
    "B4": 493.88,
    "C5": 523.25,
    "C#5": 554.37,
    "D5": 587.33,
    "D#5": 622.25,
    "E5": 659.25,
    "F5": 698.46,
    "F#5": 739.99,
    "G5": 783.99,
    "G#5": 830.61,
    "A5": 880.00,
    "A#5": 932.33,
    "B5": 987.77,
    "C6": 1046.50,
    "C#6": 1108.73,
    "D6": 1174.66,
    "D#6": 1244.51,
    "E6": 1318.51,
    "F6": 1396.91,
    "F#6": 1479.98,
    "G6": 1567.98,
    "G#6": 1661.22,
    "A6": 1760.00,
    "A#6": 1864.66,
    "B6": 1975.53,
    "C7": 2093.00,
    "C#7": 2217.46,
    "D7": 2349.32,
    "D#7": 2489.02,
    "E7": 2637.02,
    "F7": 2793.83,
    "F#7": 2959.96,
    "G7": 3135.96,
    "G#7": 3322.44,
    "A7": 3520.00,
    "A#7": 3729.31,
    "B7": 3951.07,
    "C8": 4186.01,
    "C#8": 4434.92,
    "D8": 4698.63,
    "D#8": 4978.03,
    "E8": 5274.04,
    "F8": 5587.65,
    "F#8": 5919.91,
    "G8": 6271.93,
    "G#8": 6644.88,
    "A8": 7040.00,
    "A#8": 7458.62,
    "B8": 7902.13
]