CEA Audio Networking and Dante Protocol 2

Question 1

What is AES67 and how does it relate to Dante?

Accepted Answer

An AES standard for audio transport over IP networks; Dante can operate in AES67 interoperability mode to exchange audio with other AES67-compliant systems

Answer

AES67 is an open AES standard for high-performance audio transport over IP networks. Dante supports an AES67 interoperability mode, allowing Dante devices to send and receive audio to/from other AES67-compatible systems (such as Ravenna, Livewire+, and Q-LAN), enabling multi-vendor audio networking environments.

Question 2

In a managed Dante network, what is the purpose of configuring 'QoS' (Quality of Service) on network switches?

Accepted Answer

To prioritize Dante audio traffic and PTP synchronization packets over lower-priority data traffic, ensuring consistent latency and preventing dropouts

Answer

QoS policies on managed switches mark and prioritize Dante audio and PTP synchronization packets with higher priority queues. This prevents audio dropouts when network congestion occurs from other data traffic (file transfers, video streaming) competing for bandwidth on shared infrastructure.

Question 3

What latency settings are typically available in Dante Controller, and what determines the appropriate setting?

Accepted Answer

Typically 0.25 ms, 0.5 ms, 1 ms, and higher; the appropriate setting depends on network quality, switch count between devices, and the acceptable monitoring latency for the application

Answer

Dante Controller offers selectable latency settings (commonly 0.25 ms, 0.5 ms, 1 ms, and higher). Lower settings require higher-quality, more consistent network infrastructure (fewer switch hops, managed switches with QoS). Higher latency settings provide more buffering margin for less predictable networks.

Question 4

What is the 'Dante Virtual Soundcard' (DVS) application used for?

Accepted Answer

Software that turns a standard computer's Ethernet port into a Dante audio interface, allowing the computer to receive and send Dante audio channels directly to/from DAW applications

Answer

Dante Virtual Soundcard (DVS) is a software audio driver by Audinate that enables any Windows or Mac computer with a standard Ethernet NIC to appear as a Dante device on the network. It presents Dante audio channels as ASIO/Core Audio inputs and outputs to DAWs and recording software without dedicated hardware.

Question 5

What network topology is recommended for large professional Dante installations to ensure redundancy and scalability?

Accepted Answer

A star topology with a central managed gigabit switch, and a separate dedicated Dante network isolated from general IT traffic

Answer

A star topology with a central managed gigabit (or 10G) switch is recommended. Dedicating a separate VLAN or physical switch to Dante audio isolates audio traffic from data traffic, simplifying QoS configuration and reducing interference. Managed switches with IGMP snooping, QoS, and gigabit ports are required.

(CEA) Certified Audio Engineer Practice Test

(CEA) Certified Audio Engineer Practice Test

CEA Audio Networking and Dante Protocol 2