AV2USB
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Copyrights DSP4YOU ltd
1
Product Overview
1.1
Front Panel Description
1.
Network connection #1
on RJ45 connector. Use this connector if you want to power the AV2USB from a PoE
AVB switch
2.
Network connection#2
on RJ45. Redundant connection for network.
3.
USB Audio 2.0
on miniUSB connector
1.2
Rear panel description
1. DC input
for device powering. Requires a 5VDC supply supplied with the product
1.3
Feature description
1.3.1
Audio Video Bridging
AVB defines a group of network protocols for the distribution of time synchronized and low latency Audio & Video
streams over IEEE802 networks. By leveraging a combination of existing 802 network technologies along with
standards specifically designed for the purpose, AVB technology lays the ground work for un-paralleled guaranteed
media streaming over Ethernet networks. The overall concept of AVB is actually rather simple. Without getting into
too much detail, the three core protocols specify:
-
Timing and synchronization
-
Bandwidth allocation through the Stream Reservation Protocol (SRP)
-
Traffic shaping to ensure that low priority Ethernet traffic does not interfere with AVB traffic
Engineered from the ground up for media streaming applications, AVB has a definitive edge over legacy Ethernet
technology in the sense that it allows bandwidth allocation and priority rules based on timing. Unlike similar audio
over IP (AOIP) technology, AVB will dynamically assign and defend bandwidth allocation for AVB streaming thanks to
the concept of Stream Reservation Protocol (SRP).
Terminology for AVB streaming goes as follow:
o
Audio Video Bridging (AVB):
General descriptive for a group of protocols providing audio/ video streaming,
timing, synchronization, Quality of service (QoS) , control and discovery.
o
AVB Endpoint
: AVB powered device, capable of transmitting and/ or receiving audio streams using P1722/
P1733 transport protocol.
o
Talker:
AVB endpoint transmitting audio to the network. (Source)
o
Listener:
AVB endpoint receiving audio from the network. (Sink/ Destination)
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