Convergence to the Golden Ratio no. 2

Casey Mongoven

March 24, 2005

 

description of piece: a series of intervals derived from the ratios between consecutive Fibonacci numbers (0/1, 1/1, 1/2, 2/3, 3/5, 5/8, …) showing convergence to the golden ratio

number of members in Fibonacci sequence used: 22

number of intervals used: 21

lowest frequency: 0 Hertz

highest frequency: 413 Hertz

length: 54.6 seconds

note value: 2.6 seconds

waveform, pan: fixed tone: sine 0°, -30°; moving tone: sine 180°, 30°

dynamic value: p throughout

attack: .005 seconds

release: .008 seconds

 

pitches used:

 

decimal       frequency in Hertz     

 

0             0.000000000

1             206.5000000

2             413.0000000

1.5           309.7500000

1.666666667   344.1666667

1.6           330.4000000

1.625         335.5625000

1.615384615   333.5769231

1.619047619   334.3333333

1.617647059   334.0441176

1.618181818   334.1545455

1.617977528   334.1123596

1.618055556   334.1284722

1.618025751   334.1223176

1.618037135   334.1246684

1.618032787   334.1237705

1.618034448   334.1241135

1.618033813   334.1239825

1.618034056   334.1240325

1.618033963   334.1240134

1.618033999   334.1240207

 

sequence values:

 

LEFT SPEAKER (-30°)

 

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

 

RIGHT SPEAKER (30°)

 

0 1 2 1.5 1.666666667 1.6 1.625 1.615384615 1.619047619 1.617647059 1.618181818 1.617977528 1.618055556 1.618025751 1.618037135 1.618032787 1.618034448 1.618033813 1.618034056

1.618033963 1.618033999 1.618033985

 

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