'Puff'

Quartertone pipes made of PVC PB16:

<Puff> calculation table for closed quartertone pipes, if made from PVC pipe material. Lengths of the required closed tubes in mm. Equal temperament quartertones. The table gives Physical and Acoustic lengths and pitches:

• Diam: 40 length: 406        L-ak= 431      frequency:    196.8886      Note:  55
• Diam: 40 length: 394        L-ak= 419      frequency:    202.6579      Note:  55.5
• Diam: 40 length: 382        L-ak= 407      frequency:    208.5962      Note:  56
• Diam: 40 length: 371        L-ak= 395      frequency:    214.7086      Note:  56.5
• Diam: 40 length: 359        L-ak= 384      frequency:    221           Note:  57
• Diam: 40 length: 348        L-ak= 373      frequency:    227.4758      Note:  57.5
• Diam: 40 length: 338        L-ak= 363      frequency:    234.1413      Note:  58
• Diam: 40 length: 327        L-ak= 352      frequency:    241.0022      Note:  58.5
• Diam: 40 length: 317        L-ak= 342      frequency:    248.0641      Note:  59
• Diam: 40 length: 308        L-ak= 332      frequency:    255.3329      Note:  59.5
• Diam: 40 length: 298        L-ak= 323      frequency:    262.8148      Note:  60
• Diam: 40 length: 289        L-ak= 314      frequency:    270.5158      Note:  60.5

Total length of tube for diameter  40  required =  4137  mm

• Diam: 32 length: 285        L-ak= 305      frequency:    278.4426      Note:  61
• Diam: 32 length: 276        L-ak= 296      frequency:    286.6015      Note:  61.5
• Diam: 32 length: 268        L-ak= 288      frequency:    294.9996      Note:  62
• Diam: 32 length: 260        L-ak= 279      frequency:    303.6438      Note:  62.5
• Diam: 32 length: 252        L-ak= 271      frequency:    312.5412      Note:  63
• Diam: 32 length: 244        L-ak= 264      frequency:    321.6994      Note:  63.5
• Diam: 32 length: 236        L-ak= 256      frequency:    331.1258      Note:  64
• Diam: 32 length: 229        L-ak= 249      frequency:    340.8286      Note:  64.5
• Diam: 32 length: 222        L-ak= 242      frequency:    350.8156      Note:  65
• Diam: 32 length: 215        L-ak= 235      frequency:    361.0953      Note:  65.5
• Diam: 32 length: 208        L-ak= 228      frequency:    371.6762      Note:  66
• Diam: 32 length: 202        L-ak= 222      frequency:    382.5672      Note:  66.5

Total length of tube for diameter  32  required =  3018  mm

• Diam: 25 length: 200        L-ak= 215      frequency:    393.7772      Note:  67
• Diam: 25 length: 194        L-ak= 209      frequency:    405.3158      Note:  67.5
• Diam: 25 length: 188        L-ak= 203      frequency:    417.1924      Note:  68
• Diam: 25 length: 182        L-ak= 197      frequency:    429.4171      Note:  68.5
• Diam: 25 length: 176        L-ak= 192      frequency:    442           Note:  69
• Diam: 25 length: 171        L-ak= 186      frequency:    454.9516      Note:  69.5
• Diam: 25 length: 166        L-ak= 181      frequency:    468.2827      Note:  70
• Diam: 25 length: 160        L-ak= 176      frequency:    482.0044      Note:  70.5
• Diam: 25 length: 155        L-ak= 171      frequency:    496.1282      Note:  71
• Diam: 25 length: 150        L-ak= 166      frequency:    510.6659      Note:  71.5
• Diam: 25 length: 146        L-ak= 161      frequency:    525.6296      Note:  72
• Diam: 25 length: 141        L-ak= 157      frequency:    541.0317      Note:  72.5

Total length of tube for diameter  25  required =  2235  mm

• Diam: 20 length: 140        L-ak= 152      frequency:    556.8851      Note:  73
• Diam: 20 length: 135        L-ak= 148      frequency:    573.2031      Note:  73.5
• Diam: 20 length: 131        L-ak= 144      frequency:    589.9992      Note:  74
• Diam: 20 length: 127        L-ak= 139      frequency:    607.2875      Note:  74.5
• Diam: 20 length: 123        L-ak= 135      frequency:    625.0824      Note:  75
• Diam: 20 length: 119        L-ak= 132      frequency:    643.3987      Note:  75.5
• Diam: 20 length: 115        L-ak= 128      frequency:    662.2517      Note:  76
• Diam: 20 length: 112        L-ak= 124      frequency:    681.6572      Note:  76.5
• Diam: 20 length: 108        L-ak= 121      frequency:    701.6313      Note:  77
• Diam: 20 length: 105        L-ak= 117      frequency:    722.1906      Note:  77.5
• Diam: 20 length: 101        L-ak= 114      frequency:    743.3524      Note:  78
• Diam: 20 length: 98         L-ak= 111      frequency:    765.1343      Note:  78.5

Total length of tube for diameter  20  required =  1680  mm

• Diam: 16 length: 98         L-ak= 107      frequency:    787.5544      Note:  79
• Diam: 16 length: 94         L-ak= 104      frequency:    810.6316      Note:  79.5
• Diam: 16 length: 91         L-ak= 101      frequency:    834.3849      Note:  80
• Diam: 16 length: 89         L-ak= 98       frequency:    858.8342      Note:  80.5
• Diam: 16 length: 86         L-ak= 96       frequency:    884           Note:  81
• Diam: 16 length: 83         L-ak= 93       frequency:    909.9031      Note:  81.5
• Diam: 16 length: 80         L-ak= 90       frequency:    936.5654      Note:  82
• Diam: 16 length: 78         L-ak= 88       frequency:    964.0088      Note:  82.5
• Diam: 16 length: 75         L-ak= 85       frequency:    992.2564      Note:  83
• Diam: 16 length: 73         L-ak= 83       frequency:    1021.332      Note:  83.5
• Diam: 16 length: 70         L-ak= 80       frequency:    1051.259      Note:  84
• Diam: 16 length: 68         L-ak= 78       frequency:    1082.063      Note:  84.5

Total length of tube for diameter  16  required =  1293  mm

• Diam: 12 length: 68         L-ak= 76       frequency:    1113.77       Note:  85
• Diam: 12 length: 66         L-ak= 74       frequency:    1146.406      Note:  85.5
• Diam: 12 length: 64         L-ak= 72       frequency:    1179.998      Note:  86
• Diam: 12 length: 62         L-ak= 69       frequency:    1214.575      Note:  86.5
• Diam: 12 length: 60         L-ak= 67       frequency:    1250.165      Note:  87
• Diam: 12 length: 58         L-ak= 66       frequency:    1286.797      Note:  87.5
• Diam: 12 length: 56         L-ak= 64       frequency:    1324.503      Note:  88
• Diam: 12 length: 54         L-ak= 62       frequency:    1363.314      Note:  88.5
• Diam: 12 length: 53         L-ak= 60       frequency:    1403.262      Note:  89
• Diam: 12 length: 51         L-ak= 58       frequency:    1444.381      Note:  89.5
• Diam: 12 length: 49         L-ak= 57       frequency:    1486.705      Note:  90
• Diam: 12 length: 48         L-ak= 55       frequency:    1530.269      Note:  90.5

Total length of tube for diameter  12  required =  1027  mm

• Diam: 10 length: 47         L-ak= 53       frequency:    1575.109      Note:  91
• Diam: 10 length: 46         L-ak= 52       frequency:    1621.263      Note:  91.5
• Diam: 10 length: 44         L-ak= 50       frequency:    1668.77       Note:  92
• Diam: 10 length: 43         L-ak= 49       frequency:    1717.668      Note:  92.5
• Diam: 10 length: 41         L-ak= 48       frequency:    1768          Note:  93
• Diam: 10 length: 40         L-ak= 46       frequency:    1819.806      Note:  93.5
• Diam: 10 length: 39         L-ak= 45       frequency:    1873.131      Note:  94
• Diam: 10 length: 37         L-ak= 44       frequency:    1928.018      Note:  94.5
• Diam: 10 length: 36         L-ak= 42       frequency:    1984.513      Note:  95
• Diam: 10 length: 35         L-ak= 41       frequency:    2042.664      Note:  95.5
• Diam: 10 length: 34         L-ak= 40       frequency:    2102.518      Note:  96
• Diam: 10 length: 33         L-ak= 39       frequency:    2164.127      Note:  96.5

Last update: 2003-12-15 by Godfried-Willem Raes