Archive for the ‘Music’ Category
A short piano improvisation with the DIY 17 note midi controller and the tuning below.
photo by Chris Vaisvil
! wilson_17.scl ! Wilson's 17-tone 5-limit scale 17 ! 135/128 10/9 9/8 1215/1024 5/4 81/64 4/3 45/32 729/512 3/2 405/256 5/3 27/16 16/9 15/8 243/128 2/1
Mississinewa Lake (17 edo) was created by sampling my electric aeolian harp and using Kontakt to play the sample using the built in note per octave function on my DIY 17 note per octave midi controller. Effects were added in Kontakt and Sonar.
3 Movements for Piano in Semaphore  Tuning is an edited performance. Movement 1 opens, movement 2 at 57 seconds, movement 3 at 2:33, total length 4:45
Picture by Chris Vaisvil
This tuning is slightly different from the on on the xenharmonic wiki. ! semaphore.scl ! 9 note scale from some Semaphore temperament. 9 & 5 Fokker block. Generated by http://x31eq.com/temper/ 9 ! 198.933 397.867 449.913 648.847 700.894 899.827 951.874 1150.807 1202.854
The 19th Sky of Semaphore is a composition for an imaginary chamber ensemble of two semaphore 19 tuned pianos. Photo by Chris Vaisvil
For comparison I present the same piece in 19 edo. If you listen closely you can hear slight beating in the opening 5th of the piece in the 19 edo version but is not present in the sempahore19 version.
! E:\cakewalk\scales\semaphore-19.scl ! semaphore19 19 ! 51.92500 103.85000 155.77500 250.38500 302.31000 354.23500 448.84500 500.77000 552.69500 604.62000 699.23000 751.15500 803.08000 855.00500 949.61500 1001.54000 1053.46500 1105.39000 2/1
Here is how this piece was made. I played a 12 string electric guitar with a Wampler sustain pedal and Roland Space Echo pedal. Normalized, and reversed that track. Then I used Melodyne to extract a polyphonic midi representation – more or less that same as what the guitar sounded like. Then I added a midi echo effect that is called echo delay which also has a swing setting. The midi output of that was chained into Sonar’s track midi quantization and additional arpeggiator. This midi stream was then into to Kontakt with the tuning set to the harmonic series as show in the photo below.
Unboxed – for percussion, bowed piano and manipulated voice in 10,15,and 5 edo
click to make larger
Its something I never tried – for some reason I just thought that the Kontakt note per octave would stop at 99 notes per octave and just never tried to push it much past 26 edo or so. But, when investigating things related to my Parva I just let the note per octave number go…. well into the 300’s with no sign of hitting a limit. Of course, with only 128 midi notes, 300 divisions of an octave in one instrument is not terribly useful, though 106 edo is something I’ve come to really enjoy and the Kontakt Factory String Ensemble in all of its glory accepts this tuning with grace and poise. No chipmunks or weridly mutilated samples here! So, for my enjoyment and I hope yours as well, I present this short 106 edo improvisation. Clicking into the note per octave number lets you type in your desired division directly.
By using stacked keyboard note to frequency settings in the Parva modulation matrix I happened on this tuning that has a very nice sounding 318 cent near just minor third and a 1470 cent “9th” interval. This -almost- closes at the octave + tritone – which is close enough that Melodydne doesn’t show the octave with the default settings thinking it is an overtone.
This re-tuning technique relies on changing the midi note to pitch relationship called in some circles the “slope” of the keyboard.