Rules - Lexicon MPX 1 V1.10 - MIDI IMPLEMENTATION DETAILS Midi Implementation Manual

Lexicon

Rules

In addition to the basic range limits that should be placed on the values of each field of the Audio Routing
blocks, there are some rules which should be followed when making changes such as avoiding illegal
configurations (audio path is broken, etc.), avoiding redundant paths (parallel followed by a parallel, etc.)
and avoiding confusing configurations. The following guidelines are provided for editing Audio Routing
blocks.
The default signal path between the stereo inputs and outputs is a single path—six effects blocks
connected in series. The routing options allow the user to split this path in two, creating upper and lower
paths. Once the path has been split, it can be merged back into a single path again. It is even possible
to split and merge the path more than once.
In order to minimize redundant configurations and to keep the user from making unusable routing maps
(blocks with nothing connected to the inputs, etc.), the number of options available is conditional,
depending on how blocks in front (on the input side) of the selected block are configured. There are five
possible options.
Upper The inputs and outputs of an upper block are on the upper path. This is the only option
available for a single path.
Lower The inputs and outputs of a lower block are on the lower path. Blocks can only be assigned
to the lower path if the path has been previously split.
Split The inputs of a split block are on the upper path. The outputs are assigned to both the upper
and lower path. (The lower path output signal is an exact copy of the upper path signal.) A
split block can only be used in a single path. It turns a single path into a double path.
Parallel Parallel blocks have two pairs of stereo inputs. One pair is assigned to the upper path, the
other to the lower path. The outputs are assigned to both the upper and lower path. (The lower
path output signal is an exact copy of the upper path signal.) Parallel blocks can only be used
in a double path, following either an upper or lower block.
Merge Merge blocks have two pairs of stereo inputs. One pair is assigned to the upper path, the other
to the lower path. The outputs are assigned to only the upper path. A merge block can only
be used in a double path. It changes a double path into a single path.
NOTES:
1. For every split, there must be a merge. (Think of them as open and close parenthesis marks.)
2. The input block must either be upper or split. (The user gets to choose)
3. The output block will be automatically set to upper or merge. (This is determined by the state of the
path prior to the output block. If it has been split, then the output block is automatically set to merge.
If it is single, the output block is upper.
4. As stated previously, it is possible to create configurations in which the path is split and merged more
than once.
5. Merge and parallel blocks imply more processing overhead, since they require mixing of two pairs
of signals. Given the number of blocks, the maximum number of merge /parallel blocks possible is
2 in V1.10 (3 in V1.00).
preceding block
upper
merge
SELECTED BLOCK IS ON A SINGLE PATH
configurations selectable with KNOB
upper lower
•
•
MPX 1 V1.10 MIDI Implementation Details
split parallel merge
•
•
31