Extron electronic Extron Electronics Music Mixer DMP 44 LC User Manual

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 

“

”section.

a

b

c

e

d

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.