Dsp Processing/Signal Flow; Mic/Line Input Signal Chain - Extron electronics DMP 64 User Manual

DSP Processing/Signal Flow

The diagram below shows the signal flow and DSP processing per signal chain. Signal
chains and matrixes are described in the following sections.
Inputs
1 Mic/Line Input 1
2 Mic/Line Input 2
3 Mic/Line Input 3
4 Mic/Line Input 4
5 Mic/Line Input 5
6 Mic/Line Input 6
Virtual Bus Return
Figure 13.
All signal routing, processing, and level control (gain/trim/volume), are accomplished using
software control from a PC connected to the DMP 64 via the USB configuration port,
the LAN connection (recommended) or one of the RS-232 ports. The DSP Configurator
program provides complete control while the internal web pages and SIS commands
provide more limited control.
This chapter describes the signal processing including parameter ranges, and how to mix
inputs and outputs using the DSP Configurator control program. Detailed information
for configuring the processor blocks, mix-points and level controls are found in
Software.

Mic/Line Input Signal Chain

Input signal chain GUI elements from left to right are as follows:
•
•
•
•
•
GAIN
FLT FBS DYN DYN
GAIN FLT FBS DYN DYN
GAIN FLT FBS DYN DYN
GAIN
FLT FBS DYN DYN
GAIN
FLT FBS DYN DYN
GAIN FLT FBS DYN DYN
A
FLT DYN LOUD GAIN
B
FLT DYN LOUD GAIN
C
FLT DYN LOUD GAIN
D
FLT DYN LOUD GAIN
DMP 64 DSP Signal Flow Block Diagram
Gain (GAIN) – mono gain control with a range from -18 to 80 dB includes mute
button. A polarity switch (+/-) and phantom power on/off is provided, and a meter
displays post-fader audio level in dBFS.
Filter (FILT) – up to five frequency filters can be inserted in any combination of High
Pass, Low Pass, Bass & Treble shelving, or Parametric Equalizer.
Feedback Suppressor (FBS) – Provides 15 dynamic filters and 5 fixed filters for
effective feedback control (primarily of microphone inputs).
Dynamics 1 (DYN) – Dynamics processors vary the dynamic level, (the range of
loudest to softest signals). Choices include AGC, compressor, limiter, or noise gate.
Dynamics 2 (DYN) – a second dynamics processor can be inserted from a choice of
AGC, compressor, limiter, or noise gate.
GAIN
DLY DUCK
DLY GAIN
DUCK
DLY GAIN
DUCK
GAIN
DLY DUCK
GAIN
DLY DUCK
DLY GAIN
DUCK
TRIM LOUD DLY FLT DYN VOL
TRIM DLY FLT DYN VOL
LOUD
TRIM LOUD DLY FLT DYN VOL
TRIM DLY FLT DYN VOL
LOUD
Outputs
A B C D
Virtual Bus Send
DMP
DMP 64 • Operation
1
2
3
4
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