Archive for the ‘performance’ Category

Wilson 17 tone 5 limit (scala archive)

Tuesday, April 18th, 2017



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)

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

For an Imaginary Solo String Ensemble

Sunday, March 26th, 2017


For an Imaginary Solo String Ensemble
Photo by Chris Vaisvil

in 26 edo

Monday, March 20th, 2017



a directed piano improvisation in 26 edo

The Apparition of Government

Sunday, March 19th, 2017


The Apparition of Government is a short Pianoteq improvisation using Petr Parizek 19 note meantone tuning. I took the photo.

! mtsoa19.scl
!
Meantone with stretched octaves, enharmonic scale (Gb to B#)
19
!
70.67242686428
121.28963620165
191.96206306593
262.63448993022
313.25169926758
383.92412613187
454.59655299615
505.21376233352
575.88618919780
626.50339853517
697.17582539945
767.84825226373
818.46546160110
889.13788846538
959.81031532966
1010.42752466703
1081.09995153131
1151.77237839560
1202.38958773297

A Postcard from Trappist 1

Saturday, March 18th, 2017


A Postcard from Trappist 1 is an adaptive Just Intonation improvisation using the Parva synthesizer.

Micronation (Melodyne processed aeolian harp )

Saturday, March 11th, 2017



Micronation is an audio experiment where I took a ~30 seconds of aeolian harp captured during a high wind event and used Melodyne to determine each of four root notes by frequency. [The strings were tuned justly by ear but drift after several hours exposure to the elements outside, especially due to temperature changes] Then I used Paul’s Extreme Sound Stretch to isolation each vertical harmonic structure based upon the roots determined by Melodyne (10 harmonics high by 25 cents wide)and exporting the four files. Then I used Sonar to sequence the exported wav files and applied reverb, EQ, and tape simulation. The experimentally determined roots are 92 Hz, 118 Hz[59/46], 140 Hz[35/23], and 184 Hz [ 2/1 the octave of 92].

Hindsight (Meantone)

Tuesday, March 7th, 2017


Piano version of “Hindsight”


Synthesizer version of “Hindsight”

Petr Parizek’s tuning used in this piece

Meantone with stretched octaves, enharmonic scale (Gb to B#)
|
  0:          1/1               0.000000 unison, perfect prime
  1:         70.672 cents      70.672427
  2:        121.290 cents     121.289636
  3:        191.962 cents     191.962063
  4:        262.634 cents     262.634490
  5:        313.252 cents     313.251699
  6:        383.924 cents     383.924126
  7:        454.597 cents     454.596553
  8:        505.214 cents     505.213762
  9:        575.886 cents     575.886189
 10:        626.503 cents     626.503399
 11:        697.176 cents     697.175825
 12:        767.848 cents     767.848252
 13:        818.465 cents     818.465462
 14:        889.138 cents     889.137888
 15:        959.810 cents     959.810315
 16:       1010.428 cents    1010.427525
 17:       1081.100 cents    1081.099952
 18:       1151.772 cents    1151.772378
 19:       1202.390 cents    1202.389588

Meantone with Stretched Octaves

Monday, March 6th, 2017

Supernova SN 1987A, one of the brightest stellar explosions since the invention of the telescope more than 400 years ago.

Meantone with Stretched Octaves tuning by Petr parizek, performed on a Linnstrument using Scala to retune a Parva synthesizer

This is not in Petr’s tuning – see the next post please.