Wednesday, 14 January 2009, 18:58
Hey all! Today we learnt about open and closed pipe theories. Difficult to understand, but yes, we were told that we wouldn't be using it when making dizis anyway. But there was something about the wavelengths, frequency, the speed of sound (338m/s) and 60 cm (the length of a dizi)!
We did that for the first part of the morning and then it was off to making kou dis! It was really annoying at first though, since we had to cut a long piece of acrylic into smaller pieces that were about 3 inches in length. And it was unglam, coz we had to step on the acrylic tube to make it stay still and saw through the whole tube. A lot of the tubes landed up having scratches since we couldn't hold it steady! After that, we measured half of the kou di and drilled a hole at the half way mark. Some of the kou dis broke during the first drilling coz apparently, it was a 50% success rate and acrylic tended to break more easily than the traditional bamboo ones. It was pretty smooth sailing from then on and the rest of the holes were drilled. It isn't necessary to have too much accuracy since most of the playing was done by pitch bending. We also sandpapered the kou di to get rid of all the scratches from when we were sawing through it. Once done, we went to buff it using a machine and then it was as shiny as when it started! :D
Labels: Elaine
Music, AWESOME
