Intervalon 2D-Interval Explorer
Intervalon is a musical instrument software that works on a Windows PC/tablet (Win32 desktop application).
It can be played by touch/mouse/keyboard-keys.
(Playing Intervalon with Touch interface is an experience.)
And it is 2D Interval Explorer. What? 2D Interval?
The idea of 2D Interval
- It has long been around, for centuries.
- if you pick up Second and Minor Third as the two basic intervals, among other ones, then an Octave is (3, 2), three Seconds and two Min. Thirds.
- Meantone, granted not restricted to 12 (or any number) keys per octave, can be considered to be an/the embodiment of it.
- Harmonic-Series tones, which are not artificial but natural, can be assigned 2D intervals, artificially, possibly with decimal elements.
Intervalon is designed to be very true to it.
- Note-key points are plotted so as to be mapped linearly to the set 2D Interval and Cent (pitch height).
C-D-E are drawn straight only if D is tuned at the just mean point of C and E (Meantone).
Note-key buttons are drawn as Voronoi cells.
- Play in many species of meantones, and in temperaments such as Werckmeister and Vallotti, and in other tunings, optionally along with Harmonic-Series tones.
- Do not play under a large sound volume, which may damage your hearing/health.
- If sounds (including inaudible overtone portions) are unpleasant, stop playing immediately.
For more details, see the text file included in the folder.
- Download the linked zip file (Intervalon20160824.zip, 7.4MB) containing the latest Intervalon folder.
- Check for viruses, unblock (in Properties) and unzip.
- You can put the unzipped IntervalonYYYYMMDD folder anywhere you have write-permission (for .ini file to be updated. Windows Registry is not used).
No administrative privileges are required.
- A soundfont of my compilation/modification is included for easily getting started.
- Open Intervalon.exe. The board window appears.
- Now you can play. And change settings.
- Adjust window size by Windows standard operation.
- Press 'Opt. board' (board options) button.
- First, adjust scaling.
- ... (You can hide options by 'Hide' button at the top-right corner of the board.)
- Board layout is very flexible, allowing typical (linear) transformations.
You can easily cover 6 octaves range or more. even with a small-size monitor (the case with tablets), by changing xy-ratio.
- Save the settings into .ini. file by pressing 'save board options...' button.
- Press 'Opt. sound' (sound options) button.
- Here you can change tunings, soundfont/midiout-device, instruments, and so on.
- Save the settings into .ini. file by pressing 'save sound options...' button.
- To play Harmonic Series Tones, press the button 'Harmonic Series Tones' or 'PAD' in board options.
- Specify the base (first) tone by mounting a Harmonic-Series tone note-key on any board note-key, by 'Drag'.
- In mouse/keyboard-key playing, you can use keyboard-key assignments for them.
Switch key-assignment-set by keyboard-key shortcut Shift + Z and Shift + X.
License of this software
Copyright © 2015 Kazuhiko Shirai.
Intervalon is freeware. It can be used anyway.
Redistribution is prohibited.
The software is provided as is without warranty of any kind.
Use it at your own risk. The author is not responsible for any loss or damage resulting from the use or misuse of it.
Meantone the author uses most often:
It is just in between of Pythagorean Tuning (with pure 5th) and 2/7 Meantone which is in turn just in between of 1/4 Meantone (with pure Maj.3rd) and 1/3 Meantone (with pure Min.3rd).
7/48 = ( (1/3 + 1/4) / 2 ) / 2
It has 5th/4th and 3rds/6ths equally less pure, and sounds mixed, not simple.
(Here, Meantone is not a means to approximate to Just-Intonation singing/playing.)
From the viewpoint, 12-tone equal temperament (as a kind of Meantone) has 5th too pure, and tends to single-dimensioned-ness too much.
the author's most favorite composers:
Palestrina, Alessandro Scarlatti, Handel,
Beethoven, Muzio Clementi,
Brahms, Mahler, Manuel de Falla, Furtwängler
by Kazuhiko Shirai. mail: firstname.lastname@example.org
last updated 2016/08/24.