2.The EDIT and COMPARE Modes

3.The Voice Parameters

To actually program or edit a voice you need to enter the EDIT mode. This is done by pressing the EDIT/COMPARE switch in the group of switches to the left of the 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 described 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 programmed, and its effect. These parameters are selected by pressing the appropriately 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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