Linux-SWAT
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- Feb 13, 2010
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Hi,
I have difficulties to get the string frequency from some easy formulas.
Here's the chart I use:
http://www.daddario.com/DADProductD...id=7&sid=50f400af-ca35-4823-aaea-a3a4b96ce6a4
Diameter Tension
Item #-----Note--Inches---mm------lbs---------kg--------lbs/inch
PL009-----E------0.0090---0.2280---13.140---5.960---.00001794
PL011-----B------0.0110---0.2790---11.020---5.000---.00002680
PL016-----G------0.0160---0.4060---14.680---6.660---.00005671
NW026---D------0.0260---0.6604---18.380---8.340---.00012671
NW036---A------0.0360---0.9144---19.040---8.640---.00023964
NW046---E------0.0460---1.1684---16.910---7.670---.00038216
lb * 0.45359237 = kg
inch * 25.4 = mm
But, if I apply the formula f=(k/L)*SQRT(T/u)
With f=freq(s-1), k=1/2, L=length(m), T=tension(kg.m.s-1), u=linear mass(kg.m-1)
whatever the unit conversion I use, I am unable to get an approaching 110Hz with a 648mm length, using the A string.
The best I did is to use the US units as is, and divide the result with 1.979, and I magically got an almost right value for all the strings.
I have difficulties to get the string frequency from some easy formulas.
Here's the chart I use:
http://www.daddario.com/DADProductD...id=7&sid=50f400af-ca35-4823-aaea-a3a4b96ce6a4
Diameter Tension
Item #-----Note--Inches---mm------lbs---------kg--------lbs/inch
PL009-----E------0.0090---0.2280---13.140---5.960---.00001794
PL011-----B------0.0110---0.2790---11.020---5.000---.00002680
PL016-----G------0.0160---0.4060---14.680---6.660---.00005671
NW026---D------0.0260---0.6604---18.380---8.340---.00012671
NW036---A------0.0360---0.9144---19.040---8.640---.00023964
NW046---E------0.0460---1.1684---16.910---7.670---.00038216
lb * 0.45359237 = kg
inch * 25.4 = mm
But, if I apply the formula f=(k/L)*SQRT(T/u)
With f=freq(s-1), k=1/2, L=length(m), T=tension(kg.m.s-1), u=linear mass(kg.m-1)
whatever the unit conversion I use, I am unable to get an approaching 110Hz with a 648mm length, using the A string.
The best I did is to use the US units as is, and divide the result with 1.979, and I magically got an almost right value for all the strings.
Last edited: