Digitech gsp2101 用户手册
IMPORTANT: When you start building your own Algorithms, remember that CPU and
RAM block counts are approximate. It is normal to run out of blocks even
your math says you have a few blocks still available. Also, every Algorithm
automatically requires about 28 CPU blocks for the master mix control and
miscellaneous input and output routing. This gives you about 228 CPU blocks
to work with (484 CPU blocks on a PPC-210 equipped GSP-2101 Artist).
your math says you have a few blocks still available. Also, every Algorithm
automatically requires about 28 CPU blocks for the master mix control and
miscellaneous input and output routing. This gives you about 228 CPU blocks
to work with (484 CPU blocks on a PPC-210 equipped GSP-2101 Artist).
Different Modules require different quantities of each memory type. Suppose, for example, that
you want to create an Algorithm that contains a 2-second delay, a 6-band EQ, a chorus, and a
reverb. Since delays require more RAM space than CPU space, a 2-second delay may require
only 7 CPU blocks, but as many as 100 RAM blocks. If you were to create an Algorithm con-
taining just this delay, you would be left with around 249 available CPU blocks and 156 avail-
able RAM blocks.
you want to create an Algorithm that contains a 2-second delay, a 6-band EQ, a chorus, and a
reverb. Since delays require more RAM space than CPU space, a 2-second delay may require
only 7 CPU blocks, but as many as 100 RAM blocks. If you were to create an Algorithm con-
taining just this delay, you would be left with around 249 available CPU blocks and 156 avail-
able RAM blocks.
A 6-band EQ, on the other hand, may require about 51 CPU (processing) blocks and practically
no RAM (memory). The space requirements for an EQ, then, can be translated into: 51 CPU
blocks and 0 RAM blocks. When you add this EQ to the Algorithm containing the 2-second
delay, you are left with 165 available CPU blocks and 162 available RAM blocks.
no RAM (memory). The space requirements for an EQ, then, can be translated into: 51 CPU
blocks and 0 RAM blocks. When you add this EQ to the Algorithm containing the 2-second
delay, you are left with 165 available CPU blocks and 162 available RAM blocks.
Chorus Modules may require about 50 CPU and
10 RAM blocks, but since we only need one,
there should be plenty of space for a small reverb.
After adding the chorus to the Algorithm, you
are left with 115 CPU and 152 RAM blocks.
10 RAM blocks, but since we only need one,
there should be plenty of space for a small reverb.
After adding the chorus to the Algorithm, you
are left with 115 CPU and 152 RAM blocks.
To finish the Algorithm, you would need to find
a reverb that fits into the available memory
space. A reverb that requires 69 CPU blocks and
30 RAM blocks would leave you about 46 unused
CPU blocks and 122 unused RAM blocks. After
all the Modules have been added to the
Algorithm, the memory divisions would look
something like Fig. 4-1
a reverb that fits into the available memory
space. A reverb that requires 69 CPU blocks and
30 RAM blocks would leave you about 46 unused
CPU blocks and 122 unused RAM blocks. After
all the Modules have been added to the
Algorithm, the memory divisions would look
something like Fig. 4-1
Fig. 4-1
NOTE: You don’t need to use all 256 RAM and CPU blocks in each Algorithm. Unused space
is ignored by the GSP-2101 Artist. In addition, the total number of blocks needed for
an Algorithm will always exceed the sum of the blocks used by the Modules because a
few blocks are always used for system processing.
an Algorithm will always exceed the sum of the blocks used by the Modules because a
few blocks are always used for system processing.
L/R DSP Inputs: Although the GSP-2101 Artist only has mono guitar inputs, the digital pro-
cessing section can actually handle stereo signals. This is important as you decide upon the
structure of your User Algorithm. The FX Loop has Stereo Returns, so your User Algorithm may
want accommodate stereo signal paths.
cessing section can actually handle stereo signals. This is important as you decide upon the
structure of your User Algorithm. The FX Loop has Stereo Returns, so your User Algorithm may
want accommodate stereo signal paths.
Upon examining the Factory Algorithms, you can see that many algorithms are set up for mono
use and others for stereo. The stereo algorithms are mono compatible, so you won't notice any
indication that one is mono and another stereo. Once you start using the Stereo Returns of the
FX Loop, the difference between mono and stereo is very obvious.
use and others for stereo. The stereo algorithms are mono compatible, so you won't notice any
indication that one is mono and another stereo. Once you start using the Stereo Returns of the
FX Loop, the difference between mono and stereo is very obvious.
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Section 4 - Algorithm Usage
GSP-2101 Artist Owner’s Manual
Algorithm Use