The Temple of Clouds

September 24th, 2016

img_2165rs Picture by Chris Vaisvil

The Temple of Clouds is a combination of processed electric 17 edo guitar and timelapse video – at about 5 through 6 minutes you can see a thunderstorm come through. The video was recorded with a Brinno TLC200 time lapse camera.The tuning is unknown though a 17 edo guitar was used to generate the starting point.

Two 17 edo Guitar Centered Pieces

September 21st, 2016

img_2175crop Photo by Chris Vaisvil

Piece for solo 17 edo guitar

Piece for 17 edo guitar with effects and used as a faux 17 edo bass accompaniment

I think the relationship between the two pieces are pretty obvious. The top one started a number of harmonic ideas that get expanded in the bottom ensemble.

The Underwater Garden (processed percussion)

September 17th, 2016
A Blue Starfish (Linckia laevigata) resting on hard Acropora coral. Lighthouse, Ribbon Reefs, Great Barrier Reef

A Blue Starfish (Linckia laevigata) resting on hard Acropora coral. Lighthouse, Ribbon Reefs, Great Barrier Reef

The Underwater Garden consists of processed gongs and chimes.

Bat Bomb – Harmonic Series

September 16th, 2016


Bat Bomb is part of an ongoing series of experiments to try to learn how to make aeolian harp type sounds. In this case I used Uhe’s Brazille with a patch that manipulated the overtone by adjusting the modwheel. Using my Linnstrument in MPE mode I was able to independently adjust the overtone (13 in total per note) by moving my finger in the “Y” dimension (which was routed to the modwheel channel control) and the root note from Carlos “Super JI” tuning by selecting the pad I played. The original patch had a lot of high end to it and are some time listening to it I decided to turn the filters down to try to get closer to a sine wave. Then I experimented with tempo. I find the 60 BPM version the most interesting at the time I am writing this post though there are some interesting peculiarities of each version. And, no, I don’t feel that came close to the aeolian harp, yet I think the experiment has its merit in learning sound design technique and audio result. Of course YMMV. I present the audio in the order I find most interesting. And yes, the bat bomb was real – click the photo to read about it as you listen.

Here is the audio spectrum analysis of the 60 BPM version. Click to enlarge.

60 BPM version

240 BPM version

Original patch, 120 BPM version

For String Orchestra in Just Intonation

September 13th, 2016


Download audio

! ji_12.scl
Basic JI with 7-limit tritone                                                   

19 edo Hex Fuzz Demonstration

September 10th, 2016

img_2142-crop Picture by Chris Vaisvil

One Happy Spider (who caught a cicada) is an extended 19 edo guitar improvisation presented in 2 formats for you to compare.

This version is with a “hex fuzz” – distortion added to each string separately which eliminates the cross-string modulation artifacts that occurs when using a conventional guitar pickup and pedal. This was accomplished by using a GK-3 hex pickup on my 19 edo guitar and running it through my Boss GP-10 which has a “poly” (read hex) distortion setting.

This version includes the normal pickup signal run through Guitar Rig in parallel with the hex fuzz version. This is probably the version you want to download if you only want one and are not interested in the comparison.

19 edo Guitar Improvisation

September 9th, 2016



Faux Hyperpiano – Attempt 2 (sample based)

September 5th, 2016

faux_attempt2 click to enlarge

Using a sample provided by Kevin Hobby I used Dimension Pro to model a hyperpiano – a much more satisfying experience all around. (see attempt 1 which used pianoteq and other details) An obvious path forward is to implement filtering based on the keyboard slope. This would help the matching to the real instrument as heard in the video.

Melodyne finds this sample to be three notes, A result I am assuming due to the inharmonic nature of the sound.

faux_attempt2melodyne click to enlarge

The next step in the analysis is to look at the audio spectrum of the sample and the isolate partials Melodyne found. (The notes in Melodyne can be deleted separately.)

So, the full sample

full_sample click to enlarge

The bottom “blob” in Melodyne isolated

and spectrum
bottom click to enlarge

The middle “blob” in Melodyne isolated

and spectrum
middle click to enlarge

The top “blob” in Melodyne isolated

and spectrum
top click to enlarge

Faux Hyperpiano – Attempt 1

September 4th, 2016


This work in progress is an attempt to make pianoteq sound something in the ball park of the Sethares / Hobby Hyperpiano which is a piano modified to have a unique non-harmonic series of overtones giving a bell like quality. I still have a ways to go as this video of the real instrument shows. I based my pianoteq off of the Bluethner piano which is a paid for addin so I think you need that for this patch to work. The 12th root of 4 tuning as a scala file is here for download.

Here is a 2nd attempt – the music stays the same and I modified the patch – download the patch here or see the graphic below.
faux2 click to enlarge

Here is a 3rd attempt – the music stays the same and I modified the patch – download the patch here or see the graphic below.
faux3 click to enlarge

For the Sunset

September 2nd, 2016


For the Sunset is a 22 edo composition in 70’s rock ensemble format. I’m using my newly installed GK-3 pick up to run the guitar through a Boss GP-10 guitar processor to obtain a faux 22 edo 12 string (opens the song), a Les Paul through stack like lead (alternates with guitar rig 5 lead) and the bass sound. The straight 22 edo sound is present as a counter weight rhythm with chorus. The drums are a mix of hand placed samples and loops. The composition was recorded and mastered in cakewalk Sonar. Yes the first two chords are the 22 edo equivalent of the opening of a famous 70’s song (I like the sound of the two chords, sorry) but the resemblance ends there. The form is ABCA with B’s chord progression becoming pretty chromatic against drone strings.