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Casey Edwards

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Posts: 4
Reply with quote  #1 
Greetings,

I'm looking for info specifying the relationship between scale/note and daya head diameter. Anyone have a web address where I can find this info, or perhaps have the info off-hand?

Thanks,
Casey
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zennman

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Posts: 134
Reply with quote  #2 
Don't think there is one correct answer to it. The general consensus seems to be that a 5.25/5.5 inch head plays well in C# or D. There is one song by Shakti (Lotus Feet) in the key of E, and Zakir Hussain actually has his tabla tuned to E in that song. I wanted to give it a try, and I did actually manage to get my 5.25 inch dayan to E. It is eerily beautiful and bell like. It has been in E for about a month now, and the tuning hasn't slipped even a bit.

For the basic physics of a vibrating circular membrane chek out the first link (turn on the sound in the applet window, and play around with speed of simulation). A brief note on the harmonicity of tablas can be found in the second link. There is a much better and detailed analysis of the tabla vibrations (with empahsis on the pudi effects), but I am unable to find the link now.

http://www.falstad.com/circosc/index.html

http://130.58.92.218/webstuff/Phys22/TablaStuff/thetabla.htm
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Aanaddha

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Posts: 1,932
Reply with quote  #3 
Quote:
Originally Posted by "zennman"
Don't think there is one correct answer to it. The general consensus seems to be that a 5.25/5.5 inch head plays well in C# or D. There is one song by Shakti (Lotus Feet) in the key of E, and Zakir Hussain actually has his tabla tuned to E in that song. I wanted to give it a try, and I did actually manage to get my 5.25 inch dayan to E. It is eerily beautiful and bell like. It has been in E for about a month now, and the tuning hasn't slipped even a bit.

For the basic physics of a vibrating circular membrane chek out the first link (turn on the sound in the applet window, and play around with speed of simulation). A brief note on the harmonicity of tablas can be found in the second link. There is a much better and detailed analysis of the tabla vibrations (with empahsis on the pudi effects), but I am unable to find the link now.

http://www.falstad.com/circosc/index.html

http://130.58.92.218/webstuff/Phys22/TablaStuff/thetabla.htm
You shouldn't have much trouble getting a 5.25" tabla to 'E', especially if the puri was constructed for C# or D tuning. I wouldn't take it much higher than that if that's your only tabla however. Besides possibly tearing the skin, most puri's have a peak above which the shayhi will begin to break loose at the base where it's attached to the skin - the result will be a hidden 'buzz' - unfixable. Also depending on the quality of the shayhi preparation, the quality and thickness of the skins, and the quality of construction some puris will be more flexible in the higher tuning range than others. There is a low limit also but that's less critical - a tabla built for C# or D tuning won't always sound all that great at an 'A' or even a 'B'.
If you don't want your tabla permantly tuned to E then it would be wise to take it back down at least to D - it'll last longer.

A.

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If he could sing, and nature to accompany him, what need would he have for an instrument?
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