CHAPTER 23
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SYSTEM MENU
“Destination Name” field is used in conjunction with Axia Pathfinder routing software. An Axia Pathfinder server can directly
manipulate the Livewire input of the Omnia.9 MKII. This name will appear in the Destination column of an Axia Pathfinder
audio router. If the field is omitted the name will be shown as either Input 1, Input 2, Input 3, MPX Input 1 and MPX Input 2.
Same as previous image but shows proper reception of LW2 input.
This shows the configuration of input LW1 as well as stats for that channel. Most of the stats are self-explanatory.
The Livewire implementation in Omnia.9 MKII different from other AXIA products, as the implementation is entirely written
in software. It is not possible to lock the internal processing ot the network clock, the processing engine always runs either on
internal clock or synced to the AES Reference Input.
Thus, any time we send or receive audio over Livewire, adaptive sample rate conversion is necessary. The conversion ratio
is normally 1:1 but can vary a bit, and if the Omnia.9 is running at 44.1 kHz, the ratio will be 0.92:1 for inputs and 1.09:1 for
outputs, since the network is always 48 kHz.
So, we use a FIFO buffer (First In, First Out) and ever so slightly alter the conversion ratio (+/- 0.1% for standard audio, much
less for MPX I/O). More buffer helps prevent against dropouts due to momentary network delays.
Network status is indicated with four statistics (Discarded, Lost, Late and Resyncs).
Discarded counts packets that arrived too late to be useful.
Lost is a packet that did not arrive when we needed it.
Late is a packet that was late but that we were still able to use.
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