Lectrosonics SPNDNT - Manual (Page 16)

ASPEN Digital Processor
LECTROSONICS, INC. 16
System Setup Examples
Basic Configuration
X = INPUT
O = OUTPUT
This example illustrates the basic signal routing be-
tween two ASPEN subsystems connected via a Dante
network. This setup creates a “full-duplex” connection
where each ASPEN subsystem transmits and receives
signals simultaneously as might be used to conduct
conferencing between two meeting rooms. In this ex-
ample, no local sound reinforcement is in use.
The success of this setup could be limited by loud-
speaker/microphone acoustical coupling in the sound
systems in each room. If the level of the sound from
the loudspeakers arriving at each microphone is not far
below the loudness of the talker, an echo will be heard
at the far end (opposite ASPEN system). With careful
placement of loudspeakers and microphones, and the
use of mix-minus zoning, this type of system can be
used.
NOTE: See the next example regarding the use
of the AEC (acoustic echo canceller) on network
connections.
In the ASPEN subsystem on the left, the blue lines
indicate inputs with the signal path starting at the
microphones. The audio is routed to Mix 1 and Mix 2 in
the ASPEN matrix, which are then assigned to Dante
transmit channels 1 and 2 (labeled Out 1 and Out 2) in
the SPNDNT processor.
In the ASPEN subsystem on the right, Dante receive
channels 1 and 2 are assigned to Mix 1 and Mix 2 in
the ASPEN matrix by the SPNDNT processor. These
two mixes are then selected as the signal sources for
outputs 1 and 2 of the mixer.
The reverse of this signal flow (in red) from the ASPEN
system on the right to the system on the left takes
place through ASPEN Mixes 3 and 4, and Dante trans-
mit channels 3 and 4.
Each ASPEN system is an independent sub-system,
so the Mix numbers used in one system have no bear-
ing on those used in any other ASPEN sub-system.
The Mix numbers used here were chosen only for clar-
ity in visualizing the signal paths.