Yamaha DX21 - Manual (Page 30)

To actually program or edit a voice you need to enter the EDIT mode. This is done
2. The EDIT and by pressing the EDIT/COMPARE switch in the group of switches to the left of the
COMPARE Modes
LCD panel.
When the EDIT mode is activated the upper line of the LCD will indicate the currently
selected algorithm, the operator ON/OFF status (the group of four 1s or 0s) and
the currently selected operator. The lower disply line will indicate the currently
selected voice parameter. The last voice selected in the PLAY mode will be selected
for editing. The individual voice parameters are then selected by pressing the
corresponding voice selector switches—all voice parameters are printed in violet
above the voice selector switches. The selected parameter is then programmed using
the DATA ENTRY control and/or switches. The individual parameters will be de-
scribed in detail below.
Once the EDIT mode has been called and any parameter change has been made,
a small letter “e” will appear in the top left corner of the LCD, indicating that editing
is in progress. You can play the DX21 keys and listen to how parameter changes
are affecting the voice as you edit. In many cases you will be editing an existing
voice and will want to compare the sound of the edited voice with the original
voice. This is done simply by pressing the EDIT/COMPARE switch again. The small
letter “e” in the top left corner of the LCD will change to a “c” indicating that the
COMPARE mode has been activated, and that the voice you will now hear is the
original voice before editing (the parameters displayed on the LCD will also revert
to those of the original voice). You can then return to the voice being edited by
pressing the EDIT/COMPARE switch again. This can be repeated as many times
as needed during the editing process. The COMPARE mode can only be entered
from the EDIT mode, however, after at least one data change has been made to
the original voice.
The EDIT/COMPARE mode can be exited by entering any PLAY mode or the
FUNCTION mode. Please note, however, that if you exit the EDIT/COMPARE mode
and then select a new voice ANY DATA YOU HAVE EDITED WILL BE ERASED!!!
This is because all editing is performed in a special edit buffer memory which is
the same memory to which a voice is called when its selector button is pressed.
To save edited data you must use the STORE function to save the new data in one
of the DX21’s 32 RAM voice memories. The STORE function will be discussed in
CHAPTER III: MEMORY MANAGEMENT. If you do make a mistake and lose the
edited data, the DX21 has been provided with a special temporary buffer memory
from which the lost data can be recalled (assuming only one error has been made)
using the EDIT RECALL function. The EDIT RECALL function will also be discussed
in CHAPTER III: MEMORY MANAGEMENT.
The following is a brief description of each available voice parameter, how it iS
3. The Voice programmed, and its effect. These parameters are selected by pressing the appro-
Parameters
priately labelled (violet labels indicate voice parameters) panel switch while the
DX21 is in the EDIT mode.
PB MODE: OPERATOR SELECT
This switch (located immediately above the -1 DATA ENTRY button) selects the
operator to be worked on. Only one operator can be selected at a time. Only the
parameters for the selected operator will be displayed on the LCD panel.
In the EDIT mode the currently selected operator number is generally displayed
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