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EDGE Network / Jan 2016
G E N E R A L I N F O R M A T I O N
Next, the corresponding Buffer Source is routed to a physical audio output Destination
on the Transmitter end BLADE located at the far end of IP radio link. Individual DELAY
controlsforeachofthefourEDGEBufferoutputsallowtheusertofinetunetheplayback
bufferdepth,thuscompensatingforlatencyintheIPradio’sstream.
Because the small WheatNet‑IP packets have been buffered by the EDGE prior to IP
radio transmission, Ethernet overhead is reduced and the IP radio BW requirements are
somewhat relaxed.
Managed Gigabit
Ethernet Switch
Surface (Console)
Small Packets
Delayed
PGM
Air PGM to
Buffer
Return
Audio
Return Audio
to Buffer
AES or
Analog Audio
Air PGM
Studio BLADEs
Ethernet Switch
Ethernet Switch
Half Duplex Link
2.5MB/sec per stream
5MB/sec per stream
IP Radio
IP Radio
BLADE
BLADEs (optional)
EDGE
to Airchain
STUDIO
TRANSMITTER
Delayed
PGM
EDGE At Studio
Delayed PGM to BLADE
Return Audio to EDGE Buffer
Managed Gigabit
Ethernet Switch
EDGE Installed at the Transmitter Side
Fora“TX-Edge”IP-STLapplication,anIPradioisconnectedtotheWheatNet-IP
EthernetnetworkontheStudiosideandtheEDGEisthenlocatedatthetransmitter(TX)
end. The EDGE connects to another Ethernet switch along with the IP radio. A BLADE,
co‑located at the transmitter site is not required, but can provide valuable resources and
functionality(silencedetection,mixing,audioclipplayer,etc.).
In this case, PGM audio from a control room still needs to get through an IP radio to the
transmitter site. In Navigator, the desired PGM mix Source would be routed to one of the
EDGE’stwoanalogortwoAES
Destinations feeding the rest of the air chain. Individual
DELAYcontrolsforeachoftheanalogandAESoutputsallowtheusertofinetunethe
playback buffer depth, thus compensating for latency in the IP‑radio stream.
Managed Gigabit
Ethernet Switch
Surface (Console)
Air PGM
Return Audio
Half Duplex Link
Air PGM
to Buffer
Studio BLADEs
Ethernet Switch
Ethernet Switch
EDGE
Delayed AES or
Analog Audio
to Airchain
STUDIO
TRANSMITTER
IP Radio
IP Radio
EDGE At Transmitter
PGM Stream to EDGE Buffer
Return Audio from EDGE Inputs
Managed Gigabit
Ethernet Switch
Audio
Input
Air PGM
2.5MB/sec per stream
5MB/sec per stream