Midi Filters; Midi Lock - GEM Powerstation SK760 Owner's Manual

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MIDI FILTERS

The SK760/880 MIDI Filters allow you to block
the reception and transmission of unwanted MIDI
messages from the MIDI data stream.
For example, if you were playing a midi file from
an external sequencer using the E. Piano 2 sound
from the SK760/880, you might find that every
time you start the playback of the sequence, the
sound switches to, for example, Piano1. This
occurs because of the presence of a Program
change message at the beginning of the Song.
This problem can be overcome by selecting the
"Program change" MIDI IN Filter Program which
"filters off" all program change messages from
the MIDI IN data stream.
In another example, whenever you select a
Sound from the SK760/880 panel, a Program
Change message would also be sent to an ex-
pander connected to the SK760/880 MIDI OUT,
causing the expander's sound to be changed at
the same time. To avoid changing the external
sound every time you select a SK760/880 sound,
you would select a "Program Change" MIDI OUT
Filter to exclude all program change messages
from the MIDI OUT data stream.
2•64 User Guide

MIDI LOCK

This feature allows you to "lock" the MIDI set-
tings of the instrument. Normally, the MIDI Chan-
nels, MIDI Configuration and MIDI Filters are
memorized for each Performance. This means
that every time you recall a different Performance,
the instrument's MIDI settings will change accord-
ing to the way they were set for the recalled Per-
formance.
MIDI Lock allows you to override the individual
Performance settings, permitting you to select any
Performance without changing the current set-
tings. After enabling the MIDI Lock function (soft
button F8 - option in negative highlight), you may
adjust the MIDI settings as you wish. All subse-
quent changed made to the MIDI settings will
remain in memory until you change them again,
or until you disable the MIDI Lock function.
Other MIDI features
Very briefly, your SK760/880 offers the following
additional MIDI features:
Common channel: this channel is primarily used
for the sending and receiving of PERFORMANCE
messages. A Program Change message re-
ceived on the Common channel will not change
one of the individual sound on the keyboard. In-
stead, it will be interpreted as a PERFORMANCE
CHANGE message.
MIDI Dump: a means of sending all information
currently residing in the instrument's memory to
another SK760/880, or an external data storage
device. The SK760/880 can also receive a DUMP
from an external source.
System Exclusive: your SK760/880 can be ena-
bled or disabled for the transmission/reception
of System Exclusive messages.
SMF Save Format: this function allows you to
set SK760/880 to save MIDI files as format 0 or
format 1.

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