All that said, a 5-10 degree angle, a la guitar, would really help us stop the wave at the knot/ sheytanak and relieve us from the extra fret there. That fret causes extra friction and hysteresis (non-linearity) during the tuning process.
Sure, my email is info@aaaban.com. I simply think the shape of the knot/ sheytanak as well as the extra silly fret we put there, act to stop the vibration right there at the initial contact point. What happens after the sheytanak, does not influence L (or even the tension for the most part), since the wave is already confined to the bridge and the sheytanak.
Thanks a lot for your comment. I 100% agree on most part. None of these were my own concern This was made against the article publishied on Shahram Jazayeri'es site which stated the string angle matters. I disagree just like you. Some other things are going on in Tars Sheytanak that don't apply to the one for setar. Please send me your email address so I can send you my documentation and research. I'd like to have your opinion if you don't mind.
4) The equations you are quoting are only accurate to the 0th order and not to 1st and 2nd orders of magnitude. 5) There are a lot more to be said on the matter that is beyond a video comment. But overall, I am wondering if you are worried about matters that are not the most important issues if I may say. You could even argue that all these issues are out the door the moment you used alternate tunings. Then your bridge is surely off balance. We can skype sometime and chat if you like.
If the friction coefficient is 0, angle won't matter. But also if the sheytanak acts as an ideal knife edge the contact angle wont matter. T1/T2=exp(Mu x Theta). Say your sheytanak is a flat surface of 1 mm or a sharp knife edge pulled down by an fret tied there, the contact angle is the same regardless of the string angle. 3) Tar, setar etc would benefit greatly from a tiny angle in sapnjeh (tuning box vs the neck) as in guitar, because it would relieve us from having a fret at sheytanak.
It is always great to do experiments and learn new things. If I may, I would like to point out a few things. 1) As you know L is the length of the vibrating string. Considering the knot (Sheytanak) to act as a knife edge in an ideal situation, the length L pretty much ends at sheytanak regardless of the angle. So I don't believe you get a different L depending on angle. 2) The tention depends on the angle of contact and the friction coefficient.
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All that said, a 5-10 degree angle, a la guitar, would really help us stop the wave at the knot/ sheytanak and relieve us from the extra fret there. That fret causes extra friction and hysteresis (non-linearity) during the tuning process.
goodcyrus 3 weeks ago
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goodcyrus 3 weeks ago
Sure, my email is info@aaaban.com. I simply think the shape of the knot/ sheytanak as well as the extra silly fret we put there, act to stop the vibration right there at the initial contact point. What happens after the sheytanak, does not influence L (or even the tension for the most part), since the wave is already confined to the bridge and the sheytanak.
goodcyrus 3 weeks ago
Thanks a lot for your comment. I 100% agree on most part. None of these were my own concern This was made against the article publishied on Shahram Jazayeri'es site which stated the string angle matters. I disagree just like you. Some other things are going on in Tars Sheytanak that don't apply to the one for setar. Please send me your email address so I can send you my documentation and research. I'd like to have your opinion if you don't mind.
Thanks again.
setarmaker 3 weeks ago in playlist Uploaded videos
goodcyrus,
Please let me know if you have facebook account. I do not have skyp
setarmaker 3 weeks ago in playlist Uploaded videos
4) The equations you are quoting are only accurate to the 0th order and not to 1st and 2nd orders of magnitude. 5) There are a lot more to be said on the matter that is beyond a video comment. But overall, I am wondering if you are worried about matters that are not the most important issues if I may say. You could even argue that all these issues are out the door the moment you used alternate tunings. Then your bridge is surely off balance. We can skype sometime and chat if you like.
goodcyrus 3 weeks ago in playlist Uploaded videos
If the friction coefficient is 0, angle won't matter. But also if the sheytanak acts as an ideal knife edge the contact angle wont matter. T1/T2=exp(Mu x Theta). Say your sheytanak is a flat surface of 1 mm or a sharp knife edge pulled down by an fret tied there, the contact angle is the same regardless of the string angle. 3) Tar, setar etc would benefit greatly from a tiny angle in sapnjeh (tuning box vs the neck) as in guitar, because it would relieve us from having a fret at sheytanak.
goodcyrus 3 weeks ago in playlist Uploaded videos
It is always great to do experiments and learn new things. If I may, I would like to point out a few things. 1) As you know L is the length of the vibrating string. Considering the knot (Sheytanak) to act as a knife edge in an ideal situation, the length L pretty much ends at sheytanak regardless of the angle. So I don't believe you get a different L depending on angle. 2) The tention depends on the angle of contact and the friction coefficient.
goodcyrus 3 weeks ago in playlist Uploaded videos