janzen@pipa.DEC (Thomas E. J. LMO4/B5 279-5421 ECL Test) (04/23/85)
I built and last night plugged in the PAiA EK10 Just Intonation Generator, which can, if you buy a DIP to DIP cable from Radio Shack, plug into the socket that cheap organs have the 50240 top octave generator IC in. The pitch was a fourth higher than the 50240, so I will think that one over. Maybe I'll just leave it. Obviously, some fifths are way out of tune (like d-a, f#-c#, others) and the rest are perfect perfect fifths, ratio 2:3. I have no comments about the scale used, but it worked. I was not thrilled. This is one of the underdocumented kits that are a little cheap for what they are. You should be pretty electronical to be able to build it. My synthesizer is 5 octaves, built on Don Lancaster's mid-70's Radio Electronics Magazine articles about how to build a synthesizer from CMOS logic. I built it to get out of school. The articles don't show you the output buffer amp, the chassis, or the power supply. And the envelope generator is crummy. I made a new one out of 339 op amp variable pulse width oscillators, and even they have mutual interference problems. I also built a calibrated quarter tone clock. Note that you should not buy off-the-shelf crystals for the clocks. Learn how to specify crystals and buy them through the mail from crystek or somebody, so that your synth is in tune. Maybe it would be nice to have a computer-programmable clock board that could have many different twelve tone scales, or a harry partch scale. Did you see that show of movies on public tV saturday night or sunday night about Brian Eno, Harry Partch, and that percussionist, van Teigham? Thomas Janzen DEC Marlboro MA
gtaylor@lasspvax.UUCP (Greg Taylor) (04/25/85)
(Thomas E. J. LMO4/B5 279-5421 ECL Test) writes: > >Did you see that show of movies on public TV saturday night or sunday night >about Brian Eno, Harry Partch, and that percussionist, van Teigham? > Better than tha, did any of your net denizens TAPE it? I'd be very interested in seeing the Eno video (I know the Van Tiegham and the Partch ones pretty well-I think that the Partch is in fact a film transferred to video). -- ________________________________________________________________________________ Once I was young:once I was smart:now I'm living on the edge of my nerves:-Japan Gregory Alan Taylor:162 Clark Hall:Cornell University:Ithaca,NY 14850:USA USENET: {cmcl2,decvax,ihnp4}!cornell!lasspvax!gtaylor ARPANET: gtaylor@lasspvax.arpa BITNET: gtaylor@crnlthry.bitnet ________________________________________________________________________________