Yamaha DX7 II FD Reference Manual page 45

Performance name
If this happens, the first notes to be played will cease in order
to
"make room" for the new
notes. Since these later notes are considered by the DX7 II
to
be "continuations" of the
notes that have ceased to sound, part of the attack of the new notes may not be
reproduced. The result of turning forced EO damping off is shown in the diagram below.
First note
EG Forced Damping Off
, ,
This part of the attack-+/'
is not reproduced /
, ,
9th note
This can be avoided if desired by turning EO forced damping on. Doing so forces the
envelope to quickly drop to 0 (referred
to
as "damping") so that the new sound can start
with a complete attack.
EG Forced Damping On
This is the "forced damping"-
-The entire attack is reproduced
First note 9th note
This function is particularly effective for sounds-such as brass voices-in which timbre
changes during the attack are very important. If forced damping is not used with these
voices, the notes exceeding the note limit will not sound brass-like, because the attack
portion is missing.
Note:
Due to the very short time it takes to damp the previous envelope, using this function
will slightly delay the attack of notes exceeding the note limit. It should not be used
when playing voices such as piano or organ where the attack is very fast.
As with voices, performance configurations can be named for easy identification.
Performance names can be twice as long as voice names-up to 20 characters. The
available symbols are those used in the voice names, identified by their brown color and
position under many of the buttons on the front panel. Naming is also performed in an
identical manner.
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