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Command/Response Tables for DSP SIS Commands
Many digital signal processor (DSP) functions (gain, mute, and group masters) can be
controlled using SIS commands. These commands follow the same general rules as basic
SIS commands, but the variables (
X/
) tend to be more complex. Also, a comprehensive
understanding of the audio signal flow is helpful in understanding the commands.
The following figure shows the specific DSP processors available for SIS commands.
NOTE: The entire signal flow is described in more detail in the
“DSP Processing and Signal Flow”section.
a b c
ed
Figure 23. DSP Processors Addressable via SIS Commands
The DSP Configurator program window consists of an input signal processor chain, the
mixer matrix, and an output signal processing chain. The following five processors can be
controlled using the DSP SIS commands:
a Line input gain control — Provides level adjustment, mute and polarity.
b Line input pre-mixer gain — Provides basic level adjustment after the input audio
processing chain and prior to the mix-point.
c Mix-points — Provide level adjustment and signal routing from the inputs to the
outputs.
d Output trim control — Provides level adjustment after the line input audio
processing.
e Output volume control — Provides volume control of the variable output, mute,
and polarity.
DMP 44 LC • SIS Programming and Control 46