​
Skin thickness (mm)
Skin density (kg/m³)
Applied tension (N/m)
Dundun — three-drum membrane tension model (ESTIMATES ONLY)
Dundunba (bass) + Sangban (mid) + Kenkeni (high). Single skin parameters applied to all.
Skin thickness (mm)
1.5
Skin density (kg/m³)
900.
Areal density (kg/m²)
1.3500
Applied tension (N/m)
150.
Grid{Drum,Target note,Target Hz,Actual Hz,Req. tension (N/m),Status},Module{D_m,fEst$,tReq$},Global`D$_m=
NameDundunba (bass),DiamCm42.,TargetHz65.4,TargetNoteC2[DiamCm]
100.
;fEst$=membraneFreq[D_m,FE`tensionNm$$5977026685654412217335693827501657466783,sigma$79067];tReq$=requiredTension[NameDundunba (bass),DiamCm42.,TargetHz65.4,TargetNoteC2[TargetHz],D_m,sigma$79067];NameDundunba (bass),DiamCm42.,TargetHz65.4,TargetNoteC2[Name],NameDundunba (bass),DiamCm42.,TargetHz65.4,TargetNoteC2[TargetNote],NameDundunba (bass),DiamCm42.0,TargetHz65.4,TargetNoteC2[TargetHz],fEst$,tReq$,StyleIfAbs
fEst$
NameDundunba (bass),DiamCm42.,TargetHz65.4,TargetNoteC2[TargetHz]
-1.<0.05,TUNED,If[fEst$<NameDundunba (bass),DiamCm42.,TargetHz65.4,TargetNoteC2[TargetHz],TOO LOOSE,TOO TIGHT],IfAbs
fEst$
NameDundunba (bass),DiamCm42.,TargetHz65.4,TargetNoteC2[TargetHz]
-1.<0.05,Darker[Green],Orange,Module{D_m,fEst$,tReq$},Global`D$_m=
NameSangban (mid),DiamCm35.,TargetHz130.8,TargetNoteC3[DiamCm]
100.
;fEst$=membraneFreq[D_m,FE`tensionNm$$5977026685654412217335693827501657466783,sigma$79067];tReq$=requiredTension[NameSangban (mid),DiamCm35.,TargetHz130.8,TargetNoteC3[TargetHz],D_m,sigma$79067];NameSangban (mid),DiamCm35.,TargetHz130.8,TargetNoteC3[Name],NameSangban (mid),DiamCm35.,TargetHz130.8,TargetNoteC3[TargetNote],NameSangban (mid),DiamCm35.0,TargetHz130.8,TargetNoteC3[TargetHz],fEst$,tReq$,StyleIfAbs
fEst$
NameSangban (mid),DiamCm35.,TargetHz130.8,TargetNoteC3[TargetHz]
-1.<0.05,TUNED,If[fEst$<NameSangban (mid),DiamCm35.,TargetHz130.8,TargetNoteC3[TargetHz],TOO LOOSE,TOO TIGHT],IfAbs
fEst$
NameSangban (mid),DiamCm35.,TargetHz130.8,TargetNoteC3[TargetHz]
-1.<0.05,Darker[Green],Orange,Module{D_m,fEst$,tReq$},Global`D$_m=
NameKenkeni (high),DiamCm28.,TargetHz261.6,TargetNoteC4[DiamCm]
100.
;fEst$=membraneFreq[D_m,FE`tensionNm$$5977026685654412217335693827501657466783,sigma$79067];tReq$=requiredTension[NameKenkeni (high),DiamCm28.,TargetHz261.6,TargetNoteC4[TargetHz],D_m,sigma$79067];NameKenkeni (high),DiamCm28.,TargetHz261.6,TargetNoteC4[Name],NameKenkeni (high),DiamCm28.,TargetHz261.6,TargetNoteC4[TargetNote],NameKenkeni (high),DiamCm28.0,TargetHz261.6,TargetNoteC4[TargetHz],fEst$,tReq$,StyleIfAbs
fEst$
NameKenkeni (high),DiamCm28.,TargetHz261.6,TargetNoteC4[TargetHz]
-1.<0.05,TUNED,If[fEst$<NameKenkeni (high),DiamCm28.,TargetHz261.6,TargetNoteC4[TargetHz],TOO LOOSE,TOO TIGHT],IfAbs
fEst$
NameKenkeni (high),DiamCm28.,TargetHz261.6,TargetNoteC4[TargetHz]
-1.<0.05,Darker[Green],Orange,FrameAll,AlignmentLeft,Background{None,{
,{
}}}
Dundunba (42cm)
Sangban (35cm)
Kenkeni (28cm)