Specifications
70
If the I/O Identifier is not visible, this means
either
that the program has no inputs or
outputs (unlikely, except for a small number of information-only presets)
or
that the
program file does not contain I/O Identifier information - this will usually only apply to
presets obtained from a DSP4000 or other earlier system.
Be mindful of the "I/O Identifiers" when you select your programs and routing
configurations. You won’t want to make connections to dead inputs or outputs unless you
plan not to use those dead inputs or outputs! You may find yourself frequently ignoring dead
inputs or outputs, especially if you load quad or octal routing configurations but only
process stereo signals. As long as you don’t fool yourself into thinking the dead inputs or
outputs are passing audio, everything is OK! Let’s look at a few examples of routing
configurations that rely on connections to dead inputs and outputs and, because of that
reliance, fail to do any business.
For example, the setup shown to the right is bad news.
The inputs to DSP A will never be heard because the
program "VocalVerb 2" doesn’t use DSP inputs 3 and 4!
Remember, the first digit in its "I/O Identifier," "2,"
means that only inputs 1 and 2 are live. Inputs 3 through
8 are dead (they’re shown as dotted circles in the
diagram). You won’t hurt the H8000FW by hooking
things up this way, but you won’t pass audio!
To the right, we have another bad scene. The program
"Big Voice" has an "I/O Identifier" of "22." That
means that only DSP outputs 1 and 2 are live. Outputs 3
through 8 are dead, but in the block diagram to the right,
it is these dead outputs that are being used. Again, you
won’t hurt the H8000FW by hooking things up this way,
but you won’t pass audio!
Of course, making a connection to a dead
input or output is not necessarily a bad thing.
You can make "dead connections" as long
as you don’t fool yourself into thinking that
they’re actually passing signals. For
example, you might want to filter a simple
stereo signal. You’ll use digital inputs 1 and
2 and digital outputs 1 and 2. You don’t
care what’s happening on the rest of the
1
2
3
4
5
6
8
7
1
2
3
4
5
6
8
7
1
2
3
4
5
6
8
7
DSP A
running
“Vocal
Verb 2”
I/O = 28
Input block
1
2
3
4
5
6
8
7
1
2
3
4
5
6
8
7
1
2
3
4
5
6
8
7
DSP A
running
“Big
Vo i ce ”
I/O = 22
ANA1
2
3
4
DIG1
DIG2
DIG3
DIG4
ANA
ANA
ANA
1
2
3
4
5
6
8
7
1
2
3
4
5
6
8
7
DSP A
running
“Stereo
Filter”
I/O = 22
You are actually only using inputs 1/2 and outputs 1/2
1
2
3
4
5
6
8
7
ANA1
2
3
4
DIG1
DIG2
DIG3
DIG4
ANA
ANA
ANA
1
2
3
4
5
6
8
7
Input block