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115a30cc5b
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2 changed files with 22 additions and 2 deletions
3
data.py
3
data.py
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@ -45,13 +45,16 @@ daddario_nickle_wound = ( # XL
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('DANW032' , .00019347),
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('DANW034' , .00021590),
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('DANW036' , .00023964),
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('DANW037*', .00024872), # from the EXL115BT, an approximation
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('DANW038' , .00026471),
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('DANW039' , .00027932),
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('DANW040*', .00029570), # from the EXL120BT, an approximation
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('DANW042' , .00032279),
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('DANW044' , .00035182),
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('DANW046' , .00038216),
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('DANW048' , .00041382),
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('DANW049' , .00043014),
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('DANW050*', .00044720), # from the EXL115BT, an approximation
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('DANW052' , .00048109),
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('DANW054' , .00053838),
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('DANW056' , .00057598),
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19
strings.py
19
strings.py
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@ -112,15 +112,32 @@ def tension2uw(t, freq):
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return (t*uw_const)/(2*scale_length*freq)**2
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if False:
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# DAd's data is all screwy so we use change scale lengths for a best-fit
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scale_length = 25.4825
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D3 = note2freq('D3')
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A2 = note2freq('A2')
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E2 = note2freq('E2')
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print('NW024 {:10.8f} == 0.00010857'.format(tension2uw(15.73, D3)))
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print('NW025* {:10.8f} == ? '.format(tension2uw(17.21, D3)))
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print('NW026 {:10.8f} == 0.00012671'.format(tension2uw(18.38, D3)))
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print()
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print('NW036 {:10.8f} == 0.00023964'.format(tension2uw(19.04, A2)))
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print('NW037* {:10.8f} == ? '.format(tension2uw(20.23, A2)))
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print('NW038 {:10.8f} == 0.00026471'.format(tension2uw(20.96, A2)))
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print()
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scale_length = 25.18
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print('NW039 {:10.8f} == 0.00027932'.format(tension2uw(12.46, E2)))
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print('NW040* {:10.8f} == ? '.format(tension2uw(13.18, E2)))
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print('NW042 {:10.8f} == 0.00032279'.format(tension2uw(14.37, E2)))
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print()
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scale_length = 25.02
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print('NW049 {:10.8f} == 0.00043014'.format(tension2uw(18.97, E2)))
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print('NW050* {:10.8f} == ? '.format(tension2uw(19.68, E2)))
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print('NW052 {:10.8f} == 0.00048109'.format(tension2uw(21.15, E2)))
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import sys
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sys.exit(0)
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outfmt = '{:<6} at {:> 5.2f} lbs ({:>+4.2f})'
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outfmt = '{:<8} at {:> 5.2f} lbs ({:>+4.2f})'
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finalfmt = 'total: {:>7.2f} lbs ({:>+5.2f})'
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def print_ideal_stock(strings):
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total_tension = 0
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