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From There to Hear: Audio Over IP
From time to time we review various products that are used to send program audio from point to point (or multipoint) via IP. Products evolve from year to year and new features get added, so it's worth seeing what's out there.
Tieline has introduced a version of its Genie codec known as Genie Distribution. What is special and unique about it is that it can become part of a WheatNet-IP studio facility. You can use Genie Distribution to connect two WheatNet-IP studio locations together, either via a private network or the public Internet, passing up to six channels of audio between endpoints. The device includes a purpose-built Tieline WheatNet audio card, and the rear panel provides a WheatNet LAN interface for connecting the codec directly to a WheatNet-IP network. After connecting it in that environment, the codec can deliver IP audio over LANs, WANs, the Internet, satellite IP, 3G, 4G, Wi-MAX and Wi-Fi.
Tieline's Toolbox, a browser-based GUI, is used to remotely control the device. If the Genie Distribution is connected to the WheatNet-IP environment, it becomes a node, and routing of WheatNet-IP sources and destinations can be performed using Wheatstone's Navigator software.
The Genie Distribution is not limited to being part of a WheatNet-IP facility though; you can use it for stereo audio distribution for up to 50 individual multi-unicast endpoints; as an STL system, or for IP multicasting (over WAN that supports multicast). Genie Distribution is capable of 24-bit/96kHz low latency linear PCM audio, but it also features the E-apt-X algorithm, as well as LC-AAC, HE-AAC v1 and v2, Opus, MPEG Layer II, Tieline Music and MusicPLUS, G.722 and G.711 algorithms.
Genie supports both IPv4 and IPv6 (Dual Stack) protocols, and the user can also connect over IP with any SIP-enabled IP codec brand that supports the EBU N/ACIP tech 3326 standard.
Telos has long been a standard-bearer in IP codecs. Its latest product is the Z/IP One, a 1RU, full-duplex codec that can also fulfill a role as an endpoint in an AoIP studio network. Aside from the typical balanced audio inputs (+4dBu or mic level, switchable) it also has a built-in Livewire interface -- thus allowing the Z/IP to become a source and destination in an Axia AoIP studio environment.
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