Archive for the ‘~Creative Commons BY-NC-ND license.’ Category

Mississinewa Lake (17 edo)

Sunday, April 16th, 2017


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.
audio only

3 Movements for Piano in Semaphore [9] Tuning

Sunday, April 9th, 2017


3 Movements for Piano in Semaphore [9] 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[9].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

Saturday, April 8th, 2017


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

Harmonic Series Piano

Sunday, April 2nd, 2017

Raw harmonic series tuned piano

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

Saturday, April 1st, 2017



Unboxed – for percussion, bowed piano and manipulated voice in 10,15,and 5 edo

Kontakt Factory String Ensemble in 106 edo

Wednesday, March 29th, 2017

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.

Parva Keyboard Slope Tuning with Melodyne Analysis

Tuesday, March 28th, 2017

Click on picture to enlarge and see the Melodyne analysis of the unknown tuning.

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.

audio

This re-tuning technique relies on changing the midi note to pitch relationship called in some circles the “slope” of the keyboard.

For an Imaginary Solo String Ensemble

Sunday, March 26th, 2017


For an Imaginary Solo String Ensemble
Photo by Chris Vaisvil

Mikrokosmos #153 in 26 edo for Chamber Ensemble

Saturday, March 25th, 2017



Bela Bartok’s composition Mikrokosmos #153 trans-tuned to 26 edo and arranged for Chamber Ensemble – flute, marimba, french horns, cellos. Photo by Chris Vaisvil

fine dividing line

Friday, March 24th, 2017

fine dividing line

(photo by Chris Vaisvil)