Chord Select is the method used to select which Chord in the table is being played.
To ‘play’ in Chord mode:
a) Go to the Frequency page
b) For each voice you want to play, select Chordn as a 1V/O source, where
n is which of the 4 ‘columns’ of the chord table to use (1-4). Usually, VCO1 is Chord1, etc.
c) Not all VCOs have to respond to data in the chord table. Only VCOs assigned to a Chord1-4 will be used. In
this manner, you can play both chords and independent VCOs simultaneously.
Here are the ‘rules’ for creating your own Chord tables.
* Use plain, ASCII text
* The file name is in 8.3 format, and has the extension TAB. The filename is used on the screen as the table name.
* Comment lines start with a ‘hash’ symbol #
* Data lines have four numeric values, of the frequency offset from the root, in semitones. A +12.00 is an octave up,
etc. They can be with or without decimal points and values to the right, so either "1" or "1.00" or even "1.0000" are
all fine. Values can range from -50.00 to +50.00. In this manner, microtuned chords/sequences are supported.
* Each line must contain 4 entries (1 per VCO). There is no way to ‘mute’ a VCO. The entries can be separated by
white space or a Tab. The end-of-line can be CR/LF (Windows) or Return (Mac).
* You don't need to define all 64 slots in the table. If you provide more than 64 the extras are ignored.
* By default, stepping will loop from the last slot to the first. If you prefer that it stops and holds on the last slot then
terminate the file with a slash / character. If no / is present, the UI will show ‘Loop’.
User Chord Tables are loaded into the non-volatile memory from uSD card on the File page. Once loaded, the uSD
card can be removed and the Chord Table(s) are stored in the E370 memory.
A simple Chord Table file example:
#EXAMPLE TABLE
0.0 3.0 5.0 -12.0
6.0 -1.25 -4.06 -6.0
/
Selecting Which Chord is Being Played
There are 2 methods to select which chord in the table is being ‘played’:
1) Using a control voltage which is divided into 64 steps (1 step per possible table entry)
2) Selecting “Step’ mode. This uses SYNC1-3 as trigger inputs as follows:
- SYNC1 steps forward 1 table entry per rising edge.
- SYNC2 steps backward 1 table entry per rising edge
- SYNC3 resets to the first entry per rising edge
This SYNC mapping will appear on the Chord page. The mapping is ‘hard coded’ and cannot be reassigned. Stepping
at audio rates is allowed. If Loop is active, you can step backwards from Entry 1 to the last table entry, or loop
forwards from the last entry to Entry 1. This implements a quad, 64-step sequencer.
