Symetrix 601, Owner'S Manual

Page: 81 / 142

A-1
Rev 2.2, 10/31/94
A. Editing Realtime Midi Settings
The 601 has the capability to modify its parameter settings in realtime, either as a function of
one of the MIDI continuous controllers or from an internal control source. To access the
realtime MIDI settings from the front panel, press the
M
IDI
button until the display reads rEAL .
A long press on the
M
IDI
button then accesses the realtime block editor. Successive presses of
the
M
IDI
button access each item on the realtime MIDI submenu. Each submenu item allows
editing one of the realtime MIDI parameters.
Each menu item is described as follows:
bLC Block select MIDI linkage 0 , 1 , or SEt . These linkages represent the two available
realtime MIDI setups. This menu item selects either the first or second MIDI
linkage for editing or selects an arbitrary parameter (offsets 0-70) within the edit
buffer for setting.
PAr Selects the edit buffer parameter to be edited. Use the edit buffer table to look up
the offset of the desired parameter. The right-hand bargraph (output
headroom/gain reduction) shows the parameter's current actual edit buffer
value on a linear scale of 0 (no LEDs) to 127 (all LEDs).
SrC Selects the source of the realtime MIDI control, as follows:
Display Description
oFF off
Cn MIDI control change packet (needs 2nd
parameter setting)
AF MIDI after touch
Pb MIDI pitch bend
dL1 Delay modulation oscillator 1
dL2 Delay modulation oscillator 2
LoG Dynamics section log signal level
nr NR center frequency (NR must be
engaged)
CGr Instantaneous compressor gain reduction
EGr Instantaneous expander gain reduction
bLC1 Block 1 output (only in Block 2 edit)
2nd MIDI control type for MIDI control change packet.
SCAL Scaling factor to apply to source after adding offset value (
±
4).
oFt Offset to apply to source value.
CLPL Lowest value allowed from this block, after all processing, scaling, and offset.
CLPH Highest value allowed from this block, after all processing, scaling, and offset.
Press the
L
EAVE
E
DIT
button to exit the realtime MIDI editing mode. if the SrC or oFt parameters
were modified, then the menu item temporarily reverts to the previous parameter ( PAr or SCAL ).
Changing the PAr parameter temporarily disables the parameter update for a second. This helps
avoid accidentally (and worse, invisibly) overwriting another edit buffer entry while selecting a
new one. Be careful! Mysterious things (not necessarily wonderful) can happen when the edit
buffer values are arbitrarily (or randomly) rewritten...
To restore a program after clobbering the edit buffer, reload the source program over the
existing edit buffer or overwrite the edit buffer with ROM program 256, then write the edit
buffer over the zombie program's memory location.