Amended the detailed instructions sheet I made for the Ki’eHeaLele project, partly because I realized I could streamline some of the equations I used to calculate soundhole size.
In addition to the old sphere-radius-quartered equation for maximum volume, there was another equation for increased bass response that I used. I recently discovered I could streamline it to Volume/K=Radius, with K being the desired resonant frequency squared and divided by 8369952 (don’t ask me how I got that number because I lost my notes for that particular equation.) And, in my case, K ended up being about 226. So, volume/226=radius of the soundhole needed.
And then, I figured out how to apply other templates with that exact same area. You need the ratio of white to black in the template (which can be made with most any picture editor by a histogram) and the aspect ratio of said template.
Equation: Width=radius*SQUAREROOT(WhitetoBlack*pi/aspect ratio).
And that’s all you need to know to create the best-sounding soundhole for your ukulele.
In addition to the old sphere-radius-quartered equation for maximum volume, there was another equation for increased bass response that I used. I recently discovered I could streamline it to Volume/K=Radius, with K being the desired resonant frequency squared and divided by 8369952 (don’t ask me how I got that number because I lost my notes for that particular equation.) And, in my case, K ended up being about 226. So, volume/226=radius of the soundhole needed.
And then, I figured out how to apply other templates with that exact same area. You need the ratio of white to black in the template (which can be made with most any picture editor by a histogram) and the aspect ratio of said template.
Equation: Width=radius*SQUAREROOT(WhitetoBlack*pi/aspect ratio).
And that’s all you need to know to create the best-sounding soundhole for your ukulele.
Comparing the Universal Oneness of All Life to Yo Mama since 2010.
I was born with the gift of laughter and a sense the world is mad.
I was born with the gift of laughter and a sense the world is mad.