Manual

135

NX has a feature that allows a stereo connecon prole to instruct the ACCESS decoder to decode only one side
of a stereo channel. This is useful in a scenario where two mono connecons need to be sent to two dierent
desnaons simultaneously.
NX has the ability to run a single instance of an audio encoder. But the user can create mulple proles using that
encoder to change behavior of either end of the link. The new opon instructs the decoder to selecvely output
only Le or Right channel of an incoming stereo feed. By applying at least two dierent proles to the outgoing
connecons, the system can eecvely send only Le channel audio to one desnaon, and only Right channel to
another.
Use of the decoder downmix funcon has two drawbacks: As with all mul-streams in ACCESS, full duplex operaon
is only supported to one desnaon. Also, both channels of the stream are actually delivered to both desnaons
over the network, ulizing more incoming network bandwidth to the decoder than necessary.
The gure above shows a typical connecon using the Decoder Downmix funcon from the encode site (A) to two
decode sites (B and C). For clarity, no return audio channel is shown from either B or C (although one could exist
from either but not both).
The user at site A builds two separate connecon proles, each using the same local stereo encode opon. They
will turn o the remote encoder on both proles. On the prole labeled “”, under advanced opons,
they will go to the remote connecon side and select “downmix”. Here, the user will instruct the remote decoder
to output only “” through both Le and Right audio outputs.