back to list

22 equal tetrads

🔗Robert Walker <robertwalker@ntlworld.com>

12/18/2003 9:24:03 PM

HI Paul,

Hope you read this eventually - I'm also wondering where you
have got to, and hope you are well.

I just added a couple of presets to FTS to play in your
22 equal modes. One plays the ten note mode from the black keys
and plays tetrads from the white keys - it is in the
drop list of presets for Views | Midi Keyboard retuning.

The other plays the mode from the top two rows of a pc kkbd
and the tetrads from the bottom two rows nad is in the new
View | Mouse and PC Keyboard music window presets.

The way it works is that it is actually setto play
1/1/ 5/4 3/2 7/4- but adjusts the pitches of the notes
to the nearest notes in the current mode (arpeggio).

You choose what pitches to play there and what instruments
to use for each from Voices | Custom Voices | Edit Custom
Melodic Voice - so one can do inversions or whatever one
pleases and you can have different instruments for each
of the notes in the chord.

Works with the sustain pedal too, and pitch bending so
you can pitch bend the entire chord up and down after you
play it.

http://www.robertinventor.com/whats_new.htm

http://www.robertinventor.com/fts_download.htm

The one with tetrads from the white keys
has two duplicated tetrads of course
for B C and E F. - here I am referring to the keys
the player plays on the keyboard and not the
pitches that get suonded.

I wonder if there is any nice
chord that one could have that would be a sensible
thing to play for one each of those notes
(some kind of diminished seventh perhaps or
something??)

Thanks,

Robert

🔗Paul Erlich <paul@stretch-music.com>

12/30/2003 9:51:32 AM

--- In tuning@yahoogroups.com, "Robert Walker" <robertwalker@n...>
wrote:

> The one with tetrads from the white keys
> has two duplicated tetrads of course
> for B C and E F. - here I am referring to the keys
> the player plays on the keyboard and not the
> pitches that get suonded.
>
> I wonder if there is any nice
> chord that one could have that would be a sensible
> thing to play for one each of those notes
> (some kind of diminished seventh perhaps or
> something??)

Perhaps these should correspond to the dissonant major-minor and
minor-major tetrads but with one pitch of each altered so that they
become consonant major or minor tetrads. Unfortunately, there isn't
just one unique way of doing this, but several.