Archive for the ‘composition’ Category

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.

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.

Claire de Lune in Wilson’s Golden Horagram nr.1 tuning

Saturday, March 11th, 2017

By Jessie Eastland – Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=22864094

Claire de Lune in Wilson’s Golden Horagram number1 tuning using u-he‘s Diva I think shows some of the amazing attributes of Wilson’s tuning systems. Throwing an arbitrary 7 note tuning and coming up with (for a microtonalist) very listenable result is impressive. I hope you enjoy this transtuned rendition as music as I have. The tuning is below.

! wilson_gh1.scl
!
Golden Horagram nr.1: 1phi+0 / 7phi+1
 7
!
 157.52096
 315.04191
 472.56287
 727.43713
 884.95809
 1042.47904
 2/1

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].

a vessel upon a strange sea (for string orchestra and french horn)

Saturday, March 4th, 2017


Photo by Chris Vaisvil

a vessel upon a strange sea (for string orchestra and french horn) uses Garritan Personal Orchestral 5 and was recorded live using a Linnstrument with Sonar Platinum as the DAW. Tuning by Scott Dakota

! D:\cakewalk\scales\Scott_Dakota\6-7-8-14note-constant-structure.scl
!
6:7:8 constant structure
 14
!
 64/63
 9/8
 8/7
 32/27
 9/7
 4/3
 81/56
 3/2
 32/21
 27/16
 12/7
 16/9
 27/14
 2/1

TraderJoe’s Cantus Firmus in 22 edo SuperPyth

Saturday, February 25th, 2017

click on picture for score
The Trader Joe’s Cantus Firmus as a non-strict fugue – in double time as written for woodwinds, flue, alto flue, clarinet, contrabasoon in SuperPyth mode 1
and in half time for those who like the harmonies to linger a bit more.

I’m not sure, after spending have a day sorting this out more or less to my… level of being able to kick it out the door, that while cool because of its source from food packaging with ancient music as its box, that this is a good exercise. Its big, the melody itself is not (to me) very appealing. See what you think.

! D:\cakewalk\scales\22_SP\22_SP_mode1 ET.scl
!
22_SP_mode1 ET
 12
!
 54.54545
 218.18182
 272.72727
 436.36364
 490.90909
 654.54545
 709.09091
 763.63636
 927.27273
 981.81818
 1145.45455
 2/1

This is not art.

Saturday, February 25th, 2017

audio only polytuned synthesizers and thunderstorm

Spring in February

Monday, February 20th, 2017


Spring in February is an edited improvisation on my Linnstrument playing Pianoteq tuned to SuperPyth mode 1 in 22 edo. I hope you like it. It was nice to step away from 19 edo – and yes I was inspired by Brendan Byrnes excellent xenharmonic tutorial video.

! D:\cakewalk\scales\22_SP\22_SP_mode1 ET.scl
!
22_SP_mode1 ET
 12
!
 54.54545
 218.18182
 272.72727
 436.36364
 490.90909
 654.54545
 709.09091
 763.63636
 927.27273
 981.81818
 1145.45455
 2/1

The Era of Fake News

Saturday, February 18th, 2017


The Era of Fake News was done by using a 70’s fuzz pedal with a cardioid mic to sample gongs, cymbals, singing bowls and chimes. These samples were then loaded into Sonar’s Matrix View and used to create a performance which was captured. Massive reverb was added.


The Era of Fake News Sanatized is the same track using Paul’s Extreme Stretch’s tonal only switch – no time stretching.

If you want to sample it – please give me a credit and link back.