Created
March 13, 2015 20:50
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Save quimbs/fe52bc25dca44cd3fcb8 to your computer and use it in GitHub Desktop.
Sample of usage of OscillatorNode in WebAudio API given a set of frequencies that represent different musical notes.
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| { | |
| "432": [ | |
| { | |
| "note":"C0", | |
| "frequency":16.05 | |
| }, | |
| { | |
| "note":"C#0", | |
| "frequency":17.01 | |
| }, | |
| { | |
| "note":"D0", | |
| "frequency":18.02 | |
| }, | |
| { | |
| "note":"D#0", | |
| "frequency":19.09 | |
| }, | |
| { | |
| "note":"E0", | |
| "frequency":20.23 | |
| }, | |
| { | |
| "note":"F0", | |
| "frequency":21.43 | |
| }, | |
| { | |
| "note":"F#0", | |
| "frequency":22.7 | |
| }, | |
| { | |
| "note":"G0", | |
| "frequency":24.05 | |
| }, | |
| { | |
| "note":"G#0", | |
| "frequency":25.48 | |
| }, | |
| { | |
| "note":"A0", | |
| "frequency":27 | |
| }, | |
| { | |
| "note":"A#0", | |
| "frequency":28.61 | |
| }, | |
| { | |
| "note":"B0", | |
| "frequency":30.31 | |
| }, | |
| { | |
| "note":"C1", | |
| "frequency":32.11 | |
| }, | |
| { | |
| "note":"C#1", | |
| "frequency":34.02 | |
| }, | |
| { | |
| "note":"D1", | |
| "frequency":36.04 | |
| }, | |
| { | |
| "note":"D#1", | |
| "frequency":38.18 | |
| }, | |
| { | |
| "note":"E1", | |
| "frequency":40.45 | |
| }, | |
| { | |
| "note":"F1", | |
| "frequency":42.86 | |
| }, | |
| { | |
| "note":"F#1", | |
| "frequency":45.41 | |
| }, | |
| { | |
| "note":"G1", | |
| "frequency":48.11 | |
| }, | |
| { | |
| "note":"G#1", | |
| "frequency":50.97 | |
| }, | |
| { | |
| "note":"A1", | |
| "frequency":54 | |
| }, | |
| { | |
| "note":"A#1", | |
| "frequency":57.21 | |
| }, | |
| { | |
| "note":"B1", | |
| "frequency":60.61 | |
| }, | |
| { | |
| "note":"C2", | |
| "frequency":64.22 | |
| }, | |
| { | |
| "note":"C#2", | |
| "frequency":68.04 | |
| }, | |
| { | |
| "note":"D2", | |
| "frequency":72.08 | |
| }, | |
| { | |
| "note":"D#2", | |
| "frequency":76.37 | |
| }, | |
| { | |
| "note":"E2", | |
| "frequency":80.91 | |
| }, | |
| { | |
| "note":"F2", | |
| "frequency":85.72 | |
| }, | |
| { | |
| "note":"F#2", | |
| "frequency":90.82 | |
| }, | |
| { | |
| "note":"G2", | |
| "frequency":96.22 | |
| }, | |
| { | |
| "note":"G#2", | |
| "frequency":101.94 | |
| }, | |
| { | |
| "note":"A2", | |
| "frequency":108 | |
| }, | |
| { | |
| "note":"A#2", | |
| "frequency":114.42 | |
| }, | |
| { | |
| "note":"B2", | |
| "frequency":121.23 | |
| }, | |
| { | |
| "note":"C3", | |
| "frequency":128.43 | |
| }, | |
| { | |
| "note":"C#3", | |
| "frequency":136.07 | |
| }, | |
| { | |
| "note":"D3", | |
| "frequency":144.16 | |
| }, | |
| { | |
| "note":"D#3", | |
| "frequency":152.74 | |
| }, | |
| { | |
| "note":"E3", | |
| "frequency":161.82 | |
| }, | |
| { | |
| "note":"F3", | |
| "frequency":171.44 | |
| }, | |
| { | |
| "note":"F#3", | |
| "frequency":181.63 | |
| }, | |
| { | |
| "note":"G3", | |
| "frequency":192.43 | |
| }, | |
| { | |
| "note":"G#3", | |
| "frequency":203.88 | |
| }, | |
| { | |
| "note":"A3", | |
| "frequency":216 | |
| }, | |
| { | |
| "note":"A#3", | |
| "frequency":228.84 | |
| }, | |
| { | |
| "note":"B3", | |
| "frequency":242.45 | |
| }, | |
| { | |
| "note":"C4", | |
| "frequency":256.87 | |
| }, | |
| { | |
| "note":"C#4", | |
| "frequency":272.14 | |
| }, | |
| { | |
| "note":"D4", | |
| "frequency":288.33 | |
| }, | |
| { | |
| "note":"D#4", | |
| "frequency":305.47 | |
| }, | |
| { | |
| "note":"E4", | |
| "frequency":323.63 | |
| }, | |
| { | |
| "note":"F4", | |
| "frequency":342.88 | |
| }, | |
| { | |
| "note":"F#4", | |
| "frequency":363.27 | |
| }, | |
| { | |
| "note":"G4", | |
| "frequency":384.87 | |
| }, | |
| { | |
| "note":"G#4", | |
| "frequency":407.75 | |
| }, | |
| { | |
| "note":"A4", | |
| "frequency":432 | |
| }, | |
| { | |
| "note":"A#4", | |
| "frequency":457.69 | |
| }, | |
| { | |
| "note":"B4", | |
| "frequency":484.9 | |
| }, | |
| { | |
| "note":"C5", | |
| "frequency":513.74 | |
| }, | |
| { | |
| "note":"C#5", | |
| "frequency":544.29 | |
| }, | |
| { | |
| "note":"D5", | |
| "frequency":576.65 | |
| }, | |
| { | |
| "note":"D#5", | |
| "frequency":610.94 | |
| }, | |
| { | |
| "note":"E5", | |
| "frequency":647.27 | |
| }, | |
| { | |
| "note":"F5", | |
| "frequency":685.76 | |
| }, | |
| { | |
| "note":"F#5", | |
| "frequency":726.53 | |
| }, | |
| { | |
| "note":"G5", | |
| "frequency":769.74 | |
| }, | |
| { | |
| "note":"G#5", | |
| "frequency":815.51 | |
| }, | |
| { | |
| "note":"A5", | |
| "frequency":864 | |
| }, | |
| { | |
| "note":"A#5", | |
| "frequency":915.38 | |
| }, | |
| { | |
| "note":"B5", | |
| "frequency":969.81 | |
| }, | |
| { | |
| "note":"C6", | |
| "frequency":1027.47 | |
| }, | |
| { | |
| "note":"C#6", | |
| "frequency":1088.57 | |
| }, | |
| { | |
| "note":"D6", | |
| "frequency":1153.3 | |
| }, | |
| { | |
| "note":"D#6", | |
| "frequency":1221.88 | |
| }, | |
| { | |
| "note":"E6", | |
| "frequency":1294.54 | |
| }, | |
| { | |
| "note":"F6", | |
| "frequency":1371.51 | |
| }, | |
| { | |
| "note":"F#6", | |
| "frequency":1453.07 | |
| }, | |
| { | |
| "note":"G6", | |
| "frequency":1539.47 | |
| }, | |
| { | |
| "note":"G#6", | |
| "frequency":1631.01 | |
| }, | |
| { | |
| "note":"A6", | |
| "frequency":1728 | |
| }, | |
| { | |
| "note":"A#6", | |
| "frequency":1830.75 | |
| }, | |
| { | |
| "note":"B6", | |
| "frequency":1939.61 | |
| }, | |
| { | |
| "note":"C7", | |
| "frequency":2054.95 | |
| }, | |
| { | |
| "note":"C#7", | |
| "frequency":2177.14 | |
| }, | |
| { | |
| "note":"D7", | |
| "frequency":2306.6 | |
| }, | |
| { | |
| "note":"D#7", | |
| "frequency":2443.76 | |
| }, | |
| { | |
| "note":"E7", | |
| "frequency":2589.07 | |
| }, | |
| { | |
| "note":"F7", | |
| "frequency":2743.03 | |
| }, | |
| { | |
| "note":"F#7", | |
| "frequency":2906.14 | |
| }, | |
| { | |
| "note":"G7", | |
| "frequency":3078.95 | |
| }, | |
| { | |
| "note":"G#7", | |
| "frequency":3262.03 | |
| }, | |
| { | |
| "note":"A7", | |
| "frequency":3456 | |
| }, | |
| { | |
| "note":"A#7", | |
| "frequency":3661.5 | |
| }, | |
| { | |
| "note":"B7", | |
| "frequency":3879.23 | |
| }, | |
| { | |
| "note":"C8", | |
| "frequency":4109.9 | |
| }, | |
| { | |
| "note":"C#8", | |
| "frequency":4354.29 | |
| }, | |
| { | |
| "note":"D8", | |
| "frequency":4613.21 | |
| }, | |
| { | |
| "note":"D#8", | |
| "frequency":4887.52 | |
| }, | |
| { | |
| "note":"E8", | |
| "frequency":5178.15 | |
| }, | |
| { | |
| "note":"F8", | |
| "frequency":5486.06 | |
| }, | |
| { | |
| "note":"F#8", | |
| "frequency":5812.28 | |
| }, | |
| { | |
| "note":"G8", | |
| "frequency":6157.89 | |
| }, | |
| { | |
| "note":"G#8", | |
| "frequency":6524.06 | |
| }, | |
| { | |
| "note":"A8", | |
| "frequency":6912 | |
| }, | |
| { | |
| "note":"A#8", | |
| "frequency":7323.01 | |
| }, | |
| { | |
| "note":"B8", | |
| "frequency":7758.46 | |
| } | |
| ], | |
| "434": [ | |
| { | |
| "note":"C0", | |
| "frequency":16.13 | |
| }, | |
| { | |
| "note":"C#0", | |
| "frequency":17.09 | |
| }, | |
| { | |
| "note":"D0", | |
| "frequency":18.1 | |
| }, | |
| { | |
| "note":"D#0", | |
| "frequency":19.18 | |
| }, | |
| { | |
| "note":"E0", | |
| "frequency":20.32 | |
| }, | |
| { | |
| "note":"F0", | |
| "frequency":21.53 | |
| }, | |
| { | |
| "note":"F#0", | |
| "frequency":22.81 | |
| }, | |
| { | |
| "note":"G0", | |
| "frequency":24.17 | |
| }, | |
| { | |
| "note":"G#0", | |
| "frequency":25.6 | |
| }, | |
| { | |
| "note":"A0", | |
| "frequency":27.12 | |
| }, | |
| { | |
| "note":"A#0", | |
| "frequency":28.74 | |
| }, | |
| { | |
| "note":"B0", | |
| "frequency":30.45 | |
| }, | |
| { | |
| "note":"C1", | |
| "frequency":32.26 | |
| }, | |
| { | |
| "note":"C#1", | |
| "frequency":34.18 | |
| }, | |
| { | |
| "note":"D1", | |
| "frequency":36.21 | |
| }, | |
| { | |
| "note":"D#1", | |
| "frequency":38.36 | |
| }, | |
| { | |
| "note":"E1", | |
| "frequency":40.64 | |
| }, | |
| { | |
| "note":"F1", | |
| "frequency":43.06 | |
| }, | |
| { | |
| "note":"F#1", | |
| "frequency":45.62 | |
| }, | |
| { | |
| "note":"G1", | |
| "frequency":48.33 | |
| }, | |
| { | |
| "note":"G#1", | |
| "frequency":51.21 | |
| }, | |
| { | |
| "note":"A1", | |
| "frequency":54.25 | |
| }, | |
| { | |
| "note":"A#1", | |
| "frequency":57.48 | |
| }, | |
| { | |
| "note":"B1", | |
| "frequency":60.89 | |
| }, | |
| { | |
| "note":"C2", | |
| "frequency":64.51 | |
| }, | |
| { | |
| "note":"C#2", | |
| "frequency":68.35 | |
| }, | |
| { | |
| "note":"D2", | |
| "frequency":72.42 | |
| }, | |
| { | |
| "note":"D#2", | |
| "frequency":76.72 | |
| }, | |
| { | |
| "note":"E2", | |
| "frequency":81.28 | |
| }, | |
| { | |
| "note":"F2", | |
| "frequency":86.12 | |
| }, | |
| { | |
| "note":"F#2", | |
| "frequency":91.24 | |
| }, | |
| { | |
| "note":"G2", | |
| "frequency":96.66 | |
| }, | |
| { | |
| "note":"G#2", | |
| "frequency":102.41 | |
| }, | |
| { | |
| "note":"A2", | |
| "frequency":108.5 | |
| }, | |
| { | |
| "note":"A#2", | |
| "frequency":114.95 | |
| }, | |
| { | |
| "note":"B2", | |
| "frequency":121.79 | |
| }, | |
| { | |
| "note":"C3", | |
| "frequency":129.03 | |
| }, | |
| { | |
| "note":"C#3", | |
| "frequency":136.7 | |
| }, | |
| { | |
| "note":"D3", | |
| "frequency":144.83 | |
| }, | |
| { | |
| "note":"D#3", | |
| "frequency":153.44 | |
| }, | |
| { | |
| "note":"E3", | |
| "frequency":162.57 | |
| }, | |
| { | |
| "note":"F3", | |
| "frequency":172.23 | |
| }, | |
| { | |
| "note":"F#3", | |
| "frequency":182.47 | |
| }, | |
| { | |
| "note":"G3", | |
| "frequency":193.32 | |
| }, | |
| { | |
| "note":"G#3", | |
| "frequency":204.82 | |
| }, | |
| { | |
| "note":"A3", | |
| "frequency":217 | |
| }, | |
| { | |
| "note":"A#3", | |
| "frequency":229.9 | |
| }, | |
| { | |
| "note":"B3", | |
| "frequency":243.57 | |
| }, | |
| { | |
| "note":"C4", | |
| "frequency":258.06 | |
| }, | |
| { | |
| "note":"C#4", | |
| "frequency":273.4 | |
| }, | |
| { | |
| "note":"D4", | |
| "frequency":289.66 | |
| }, | |
| { | |
| "note":"D#4", | |
| "frequency":306.88 | |
| }, | |
| { | |
| "note":"E4", | |
| "frequency":325.13 | |
| }, | |
| { | |
| "note":"F4", | |
| "frequency":344.47 | |
| }, | |
| { | |
| "note":"F#4", | |
| "frequency":364.95 | |
| }, | |
| { | |
| "note":"G4", | |
| "frequency":386.65 | |
| }, | |
| { | |
| "note":"G#4", | |
| "frequency":409.64 | |
| }, | |
| { | |
| "note":"A4", | |
| "frequency":434 | |
| }, | |
| { | |
| "note":"A#4", | |
| "frequency":459.81 | |
| }, | |
| { | |
| "note":"B4", | |
| "frequency":487.15 | |
| }, | |
| { | |
| "note":"C5", | |
| "frequency":516.12 | |
| }, | |
| { | |
| "note":"C#5", | |
| "frequency":546.81 | |
| }, | |
| { | |
| "note":"D5", | |
| "frequency":579.32 | |
| }, | |
| { | |
| "note":"D#5", | |
| "frequency":613.77 | |
| }, | |
| { | |
| "note":"E5", | |
| "frequency":650.27 | |
| }, | |
| { | |
| "note":"F5", | |
| "frequency":688.93 | |
| }, | |
| { | |
| "note":"F#5", | |
| "frequency":729.9 | |
| }, | |
| { | |
| "note":"G5", | |
| "frequency":773.3 | |
| }, | |
| { | |
| "note":"G#5", | |
| "frequency":819.28 | |
| }, | |
| { | |
| "note":"A5", | |
| "frequency":868 | |
| }, | |
| { | |
| "note":"A#5", | |
| "frequency":919.61 | |
| }, | |
| { | |
| "note":"B5", | |
| "frequency":974.3 | |
| }, | |
| { | |
| "note":"C6", | |
| "frequency":1032.23 | |
| }, | |
| { | |
| "note":"C#6", | |
| "frequency":1093.61 | |
| }, | |
| { | |
| "note":"D6", | |
| "frequency":1158.64 | |
| }, | |
| { | |
| "note":"D#6", | |
| "frequency":1227.54 | |
| }, | |
| { | |
| "note":"E6", | |
| "frequency":1300.53 | |
| }, | |
| { | |
| "note":"F6", | |
| "frequency":1377.86 | |
| }, | |
| { | |
| "note":"F#6", | |
| "frequency":1459.8 | |
| }, | |
| { | |
| "note":"G6", | |
| "frequency":1546.6 | |
| }, | |
| { | |
| "note":"G#6", | |
| "frequency":1638.57 | |
| }, | |
| { | |
| "note":"A6", | |
| "frequency":1736 | |
| }, | |
| { | |
| "note":"A#6", | |
| "frequency":1839.23 | |
| }, | |
| { | |
| "note":"B6", | |
| "frequency":1948.59 | |
| }, | |
| { | |
| "note":"C7", | |
| "frequency":2064.46 | |
| }, | |
| { | |
| "note":"C#7", | |
| "frequency":2187.22 | |
| }, | |
| { | |
| "note":"D7", | |
| "frequency":2317.28 | |
| }, | |
| { | |
| "note":"D#7", | |
| "frequency":2455.07 | |
| }, | |
| { | |
| "note":"E7", | |
| "frequency":2601.06 | |
| }, | |
| { | |
| "note":"F7", | |
| "frequency":2755.73 | |
| }, | |
| { | |
| "note":"F#7", | |
| "frequency":2919.59 | |
| }, | |
| { | |
| "note":"G7", | |
| "frequency":3093.2 | |
| }, | |
| { | |
| "note":"G#7", | |
| "frequency":3277.13 | |
| }, | |
| { | |
| "note":"A7", | |
| "frequency":3472 | |
| }, | |
| { | |
| "note":"A#7", | |
| "frequency":3678.46 | |
| }, | |
| { | |
| "note":"B7", | |
| "frequency":3897.19 | |
| }, | |
| { | |
| "note":"C8", | |
| "frequency":4128.93 | |
| }, | |
| { | |
| "note":"C#8", | |
| "frequency":4374.44 | |
| }, | |
| { | |
| "note":"D8", | |
| "frequency":4634.56 | |
| }, | |
| { | |
| "note":"D#8", | |
| "frequency":4910.15 | |
| }, | |
| { | |
| "note":"E8", | |
| "frequency":5202.12 | |
| }, | |
| { | |
| "note":"F8", | |
| "frequency":5511.46 | |
| }, | |
| { | |
| "note":"F#8", | |
| "frequency":5839.18 | |
| }, | |
| { | |
| "note":"G8", | |
| "frequency":6186.4 | |
| }, | |
| { | |
| "note":"G#8", | |
| "frequency":6554.26 | |
| }, | |
| { | |
| "note":"A8", | |
| "frequency":6944 | |
| }, | |
| { | |
| "note":"A#8", | |
| "frequency":7356.91 | |
| }, | |
| { | |
| "note":"B8", | |
| "frequency":7794.38 | |
| } | |
| ], | |
| "436": [ | |
| { | |
| "note":"C0", | |
| "frequency":16.2 | |
| }, | |
| { | |
| "note":"C#0", | |
| "frequency":17.17 | |
| }, | |
| { | |
| "note":"D0", | |
| "frequency":18.19 | |
| }, | |
| { | |
| "note":"D#0", | |
| "frequency":19.27 | |
| }, | |
| { | |
| "note":"E0", | |
| "frequency":20.41 | |
| }, | |
| { | |
| "note":"F0", | |
| "frequency":21.63 | |
| }, | |
| { | |
| "note":"F#0", | |
| "frequency":22.91 | |
| }, | |
| { | |
| "note":"G0", | |
| "frequency":24.28 | |
| }, | |
| { | |
| "note":"G#0", | |
| "frequency":25.72 | |
| }, | |
| { | |
| "note":"A0", | |
| "frequency":27.25 | |
| }, | |
| { | |
| "note":"A#0", | |
| "frequency":28.87 | |
| }, | |
| { | |
| "note":"B0", | |
| "frequency":30.59 | |
| }, | |
| { | |
| "note":"C1", | |
| "frequency":32.41 | |
| }, | |
| { | |
| "note":"C#1", | |
| "frequency":34.33 | |
| }, | |
| { | |
| "note":"D1", | |
| "frequency":36.37 | |
| }, | |
| { | |
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| }, | |
| { | |
| "note":"G4", | |
| "frequency":395.56 | |
| }, | |
| { | |
| "note":"G#4", | |
| "frequency":419.08 | |
| }, | |
| { | |
| "note":"A4", | |
| "frequency":444 | |
| }, | |
| { | |
| "note":"A#4", | |
| "frequency":470.4 | |
| }, | |
| { | |
| "note":"B4", | |
| "frequency":498.37 | |
| }, | |
| { | |
| "note":"C5", | |
| "frequency":528.01 | |
| }, | |
| { | |
| "note":"C#5", | |
| "frequency":559.4 | |
| }, | |
| { | |
| "note":"D5", | |
| "frequency":592.67 | |
| }, | |
| { | |
| "note":"D#5", | |
| "frequency":627.91 | |
| }, | |
| { | |
| "note":"E5", | |
| "frequency":665.25 | |
| }, | |
| { | |
| "note":"F5", | |
| "frequency":704.81 | |
| }, | |
| { | |
| "note":"F#5", | |
| "frequency":746.72 | |
| }, | |
| { | |
| "note":"G5", | |
| "frequency":791.12 | |
| }, | |
| { | |
| "note":"G#5", | |
| "frequency":838.16 | |
| }, | |
| { | |
| "note":"A5", | |
| "frequency":888 | |
| }, | |
| { | |
| "note":"A#5", | |
| "frequency":940.8 | |
| }, | |
| { | |
| "note":"B5", | |
| "frequency":996.75 | |
| }, | |
| { | |
| "note":"C6", | |
| "frequency":1056.02 | |
| }, | |
| { | |
| "note":"C#6", | |
| "frequency":1118.81 | |
| }, | |
| { | |
| "note":"D6", | |
| "frequency":1185.34 | |
| }, | |
| { | |
| "note":"D#6", | |
| "frequency":1255.82 | |
| }, | |
| { | |
| "note":"E6", | |
| "frequency":1330.5 | |
| }, | |
| { | |
| "note":"F6", | |
| "frequency":1409.61 | |
| }, | |
| { | |
| "note":"F#6", | |
| "frequency":1493.43 | |
| }, | |
| { | |
| "note":"G6", | |
| "frequency":1582.24 | |
| }, | |
| { | |
| "note":"G#6", | |
| "frequency":1676.32 | |
| }, | |
| { | |
| "note":"A6", | |
| "frequency":1776 | |
| }, | |
| { | |
| "note":"A#6", | |
| "frequency":1881.61 | |
| }, | |
| { | |
| "note":"B6", | |
| "frequency":1993.49 | |
| }, | |
| { | |
| "note":"C7", | |
| "frequency":2112.03 | |
| }, | |
| { | |
| "note":"C#7", | |
| "frequency":2237.62 | |
| }, | |
| { | |
| "note":"D7", | |
| "frequency":2370.67 | |
| }, | |
| { | |
| "note":"D#7", | |
| "frequency":2511.64 | |
| }, | |
| { | |
| "note":"E7", | |
| "frequency":2660.99 | |
| }, | |
| { | |
| "note":"F7", | |
| "frequency":2819.22 | |
| }, | |
| { | |
| "note":"F#7", | |
| "frequency":2986.86 | |
| }, | |
| { | |
| "note":"G7", | |
| "frequency":3164.47 | |
| }, | |
| { | |
| "note":"G#7", | |
| "frequency":3352.64 | |
| }, | |
| { | |
| "note":"A7", | |
| "frequency":3552 | |
| }, | |
| { | |
| "note":"A#7", | |
| "frequency":3763.21 | |
| }, | |
| { | |
| "note":"B7", | |
| "frequency":3986.99 | |
| }, | |
| { | |
| "note":"C8", | |
| "frequency":4224.06 | |
| }, | |
| { | |
| "note":"C#8", | |
| "frequency":4475.24 | |
| }, | |
| { | |
| "note":"D8", | |
| "frequency":4741.35 | |
| }, | |
| { | |
| "note":"D#8", | |
| "frequency":5023.29 | |
| }, | |
| { | |
| "note":"E8", | |
| "frequency":5321.99 | |
| }, | |
| { | |
| "note":"F8", | |
| "frequency":5638.45 | |
| }, | |
| { | |
| "note":"F#8", | |
| "frequency":5973.73 | |
| }, | |
| { | |
| "note":"G8", | |
| "frequency":6328.94 | |
| }, | |
| { | |
| "note":"G#8", | |
| "frequency":6705.28 | |
| }, | |
| { | |
| "note":"A8", | |
| "frequency":7104 | |
| }, | |
| { | |
| "note":"A#8", | |
| "frequency":7526.43 | |
| }, | |
| { | |
| "note":"B8", | |
| "frequency":7973.97 | |
| } | |
| ], | |
| "446": [ | |
| { | |
| "note":"C0", | |
| "frequency":16.57 | |
| }, | |
| { | |
| "note":"C#0", | |
| "frequency":17.56 | |
| }, | |
| { | |
| "note":"D0", | |
| "frequency":18.6 | |
| }, | |
| { | |
| "note":"D#0", | |
| "frequency":19.71 | |
| }, | |
| { | |
| "note":"E0", | |
| "frequency":20.88 | |
| }, | |
| { | |
| "note":"F0", | |
| "frequency":22.12 | |
| }, | |
| { | |
| "note":"F#0", | |
| "frequency":23.44 | |
| }, | |
| { | |
| "note":"G0", | |
| "frequency":24.83 | |
| }, | |
| { | |
| "note":"G#0", | |
| "frequency":26.31 | |
| }, | |
| { | |
| "note":"A0", | |
| "frequency":27.88 | |
| }, | |
| { | |
| "note":"A#0", | |
| "frequency":29.53 | |
| }, | |
| { | |
| "note":"B0", | |
| "frequency":31.29 | |
| }, | |
| { | |
| "note":"C1", | |
| "frequency":33.15 | |
| }, | |
| { | |
| "note":"C#1", | |
| "frequency":35.12 | |
| }, | |
| { | |
| "note":"D1", | |
| "frequency":37.21 | |
| }, | |
| { | |
| "note":"D#1", | |
| "frequency":39.42 | |
| }, | |
| { | |
| "note":"E1", | |
| "frequency":41.77 | |
| }, | |
| { | |
| "note":"F1", | |
| "frequency":44.25 | |
| }, | |
| { | |
| "note":"F#1", | |
| "frequency":46.88 | |
| }, | |
| { | |
| "note":"G1", | |
| "frequency":49.67 | |
| }, | |
| { | |
| "note":"G#1", | |
| "frequency":52.62 | |
| }, | |
| { | |
| "note":"A1", | |
| "frequency":55.75 | |
| }, | |
| { | |
| "note":"A#1", | |
| "frequency":59.07 | |
| }, | |
| { | |
| "note":"B1", | |
| "frequency":62.58 | |
| }, | |
| { | |
| "note":"C2", | |
| "frequency":66.3 | |
| }, | |
| { | |
| "note":"C#2", | |
| "frequency":70.24 | |
| }, | |
| { | |
| "note":"D2", | |
| "frequency":74.42 | |
| }, | |
| { | |
| "note":"D#2", | |
| "frequency":78.84 | |
| }, | |
| { | |
| "note":"E2", | |
| "frequency":83.53 | |
| }, | |
| { | |
| "note":"F2", | |
| "frequency":88.5 | |
| }, | |
| { | |
| "note":"F#2", | |
| "frequency":93.76 | |
| }, | |
| { | |
| "note":"G2", | |
| "frequency":99.34 | |
| }, | |
| { | |
| "note":"G#2", | |
| "frequency":105.24 | |
| }, | |
| { | |
| "note":"A2", | |
| "frequency":111.5 | |
| }, | |
| { | |
| "note":"A#2", | |
| "frequency":118.13 | |
| }, | |
| { | |
| "note":"B2", | |
| "frequency":125.15 | |
| }, | |
| { | |
| "note":"C3", | |
| "frequency":132.6 | |
| }, | |
| { | |
| "note":"C#3", | |
| "frequency":140.48 | |
| }, | |
| { | |
| "note":"D3", | |
| "frequency":148.83 | |
| }, | |
| { | |
| "note":"D#3", | |
| "frequency":157.68 | |
| }, | |
| { | |
| "note":"E3", | |
| "frequency":167.06 | |
| }, | |
| { | |
| "note":"F3", | |
| "frequency":177 | |
| }, | |
| { | |
| "note":"F#3", | |
| "frequency":187.52 | |
| }, | |
| { | |
| "note":"G3", | |
| "frequency":198.67 | |
| }, | |
| { | |
| "note":"G#3", | |
| "frequency":210.48 | |
| }, | |
| { | |
| "note":"A3", | |
| "frequency":223 | |
| }, | |
| { | |
| "note":"A#3", | |
| "frequency":236.26 | |
| }, | |
| { | |
| "note":"B3", | |
| "frequency":250.31 | |
| }, | |
| { | |
| "note":"C4", | |
| "frequency":265.19 | |
| }, | |
| { | |
| "note":"C#4", | |
| "frequency":280.96 | |
| }, | |
| { | |
| "note":"D4", | |
| "frequency":297.67 | |
| }, | |
| { | |
| "note":"D#4", | |
| "frequency":315.37 | |
| }, | |
| { | |
| "note":"E4", | |
| "frequency":334.12 | |
| }, | |
| { | |
| "note":"F4", | |
| "frequency":353.99 | |
| }, | |
| { | |
| "note":"F#4", | |
| "frequency":375.04 | |
| }, | |
| { | |
| "note":"G4", | |
| "frequency":397.34 | |
| }, | |
| { | |
| "note":"G#4", | |
| "frequency":420.97 | |
| }, | |
| { | |
| "note":"A4", | |
| "frequency":446 | |
| }, | |
| { | |
| "note":"A#4", | |
| "frequency":472.52 | |
| }, | |
| { | |
| "note":"B4", | |
| "frequency":500.62 | |
| }, | |
| { | |
| "note":"C5", | |
| "frequency":530.39 | |
| }, | |
| { | |
| "note":"C#5", | |
| "frequency":561.92 | |
| }, | |
| { | |
| "note":"D5", | |
| "frequency":595.34 | |
| }, | |
| { | |
| "note":"D#5", | |
| "frequency":630.74 | |
| }, | |
| { | |
| "note":"E5", | |
| "frequency":668.24 | |
| }, | |
| { | |
| "note":"F5", | |
| "frequency":707.98 | |
| }, | |
| { | |
| "note":"F#5", | |
| "frequency":750.08 | |
| }, | |
| { | |
| "note":"G5", | |
| "frequency":794.68 | |
| }, | |
| { | |
| "note":"G#5", | |
| "frequency":841.94 | |
| }, | |
| { | |
| "note":"A5", | |
| "frequency":892 | |
| }, | |
| { | |
| "note":"A#5", | |
| "frequency":945.04 | |
| }, | |
| { | |
| "note":"B5", | |
| "frequency":1001.24 | |
| }, | |
| { | |
| "note":"C6", | |
| "frequency":1060.77 | |
| }, | |
| { | |
| "note":"C#6", | |
| "frequency":1123.85 | |
| }, | |
| { | |
| "note":"D6", | |
| "frequency":1190.68 | |
| }, | |
| { | |
| "note":"D#6", | |
| "frequency":1261.48 | |
| }, | |
| { | |
| "note":"E6", | |
| "frequency":1336.49 | |
| }, | |
| { | |
| "note":"F6", | |
| "frequency":1415.96 | |
| }, | |
| { | |
| "note":"F#6", | |
| "frequency":1500.16 | |
| }, | |
| { | |
| "note":"G6", | |
| "frequency":1589.36 | |
| }, | |
| { | |
| "note":"G#6", | |
| "frequency":1683.87 | |
| }, | |
| { | |
| "note":"A6", | |
| "frequency":1784 | |
| }, | |
| { | |
| "note":"A#6", | |
| "frequency":1890.08 | |
| }, | |
| { | |
| "note":"B6", | |
| "frequency":2002.47 | |
| }, | |
| { | |
| "note":"C7", | |
| "frequency":2121.54 | |
| }, | |
| { | |
| "note":"C#7", | |
| "frequency":2247.7 | |
| }, | |
| { | |
| "note":"D7", | |
| "frequency":2381.35 | |
| }, | |
| { | |
| "note":"D#7", | |
| "frequency":2522.96 | |
| }, | |
| { | |
| "note":"E7", | |
| "frequency":2672.98 | |
| }, | |
| { | |
| "note":"F7", | |
| "frequency":2831.92 | |
| }, | |
| { | |
| "note":"F#7", | |
| "frequency":3000.32 | |
| }, | |
| { | |
| "note":"G7", | |
| "frequency":3178.73 | |
| }, | |
| { | |
| "note":"G#7", | |
| "frequency":3367.74 | |
| }, | |
| { | |
| "note":"A7", | |
| "frequency":3568 | |
| }, | |
| { | |
| "note":"A#7", | |
| "frequency":3780.16 | |
| }, | |
| { | |
| "note":"B7", | |
| "frequency":4004.95 | |
| }, | |
| { | |
| "note":"C8", | |
| "frequency":4243.09 | |
| }, | |
| { | |
| "note":"C#8", | |
| "frequency":4495.4 | |
| }, | |
| { | |
| "note":"D8", | |
| "frequency":4762.71 | |
| }, | |
| { | |
| "note":"D#8", | |
| "frequency":5045.91 | |
| }, | |
| { | |
| "note":"E8", | |
| "frequency":5345.96 | |
| }, | |
| { | |
| "note":"F8", | |
| "frequency":5663.85 | |
| }, | |
| { | |
| "note":"F#8", | |
| "frequency":6000.64 | |
| }, | |
| { | |
| "note":"G8", | |
| "frequency":6357.45 | |
| }, | |
| { | |
| "note":"G#8", | |
| "frequency":6735.49 | |
| }, | |
| { | |
| "note":"A8", | |
| "frequency":7136 | |
| }, | |
| { | |
| "note":"A#8", | |
| "frequency":7560.33 | |
| }, | |
| { | |
| "note":"B8", | |
| "frequency":8009.89 | |
| } | |
| ] | |
| } |
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| var freqTable, baseFreq = 440, currentNodeIndex = 57; // A4 in the array of notes | |
| $.getJSON('notes.json', function(data) { | |
| freqTable = data; | |
| }); | |
| var audioContext = new window.AudioContext(); | |
| var notesArray = freqTable[baseFreq]; | |
| var sourceAudioNode = audioContext.createOscillator(); | |
| sourceAudioNode.frequency.value = notesArray[currentNoteIndex].frequency; | |
| sourceAudioNode.connect(audioContext.destination); | |
| sourceAudioNode.start(); | |
| // This function is called passing either a +2 or a -2 to increase or decrease | |
| // the A4 frequency we are using as a reference | |
| var changeBaseFreq = function(delta) { | |
| var newBaseFreq = baseFreq + delta; | |
| if(newBaseFreq >= 432 && newBaseFreq <= 446) { | |
| baseFreq = newBaseFreq; | |
| notesArray = freqTable[baseFreq.toString()]; | |
| // We set this flag to 'true' when the reference sound feature is enabled | |
| if(isRefSoundPlaying){ | |
| // Only change the frequency if we are playing a reference sound, since | |
| // sourceAudioNode will be an instance of OscillatorNode | |
| var newNoteFreq = notesArray[currentNoteIndex].frequency; | |
| sourceAudioNode.frequency.value = newNoteFreq; | |
| } | |
| } | |
| }; | |
| // This function is used to change the note we are currently playing, using | |
| // whatever the current set of notes is (changed by the function above) | |
| var changeReferenceSoundNote = function(delta) { | |
| if(isRefSoundPlaying) { | |
| var newNoteIndex = currentNoteIndex + delta; | |
| if(newNoteIndex >= 0 && newNoteIndex < notesArray.length) { | |
| currentNoteIndex = newNoteIndex; | |
| var newNoteFreq = notesArray[currentNoteIndex].frequency; | |
| sourceAudioNode.frequency.value = newNoteFreq; | |
| } | |
| } | |
| }; |
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