Detailed Dante network audio transmission protocol First of all, what is the Dante protocol.

Detailed Dante network audio transmission protocol First of all, what is the Dante protocol.
The Dante protocol is a modern high-performance digital media transmission system running on a standard IP network. It was developed by Audinate in 2003. Like the traditional CobraNet technology, it is also a hardware, software and communication protocol.
Second, what are the advantages of Dante?
Dante technology allows multiple audio channels to be sent and received simultaneously on an Ethernet line, avoiding the complexity and limitations of earlier solutions. Dante's low latency and rigorous simultaneous playback meet the requirements of the most demanding audio systems and are very compatible with existing IT equipment. The difference from the traditional products is that Dante has crossed the Layer 2 network communication protocol, adopting a more advanced and convenient IP Layer 3 communication protocol, and can directly transition to the AVB (Audio Video Bridging) protocol through the upgrade of Firmware. This is a very important step.
Third, how many audio channels does the Dante protocol support?
Gigabit Network: Supports 512✕51248KHz/24Bit audio channels on a single link, that is, a total of 1024 bidirectional channels. For 96KHz/24Bit audio data streams, the channel capacity is halved.
MONISMS supports 48✕4848KHz/24Bit audio channels on a single link, that is, a total of 96 bidirectional channels. For 96KHz/24Bit audio data streams, the channel capacity is halved.
The Dante protocol supports two audio sampling rates of 48KHz and 96KHz, depending on the products of different manufacturers and different series.
Fourth, what is the delay of two audio nodes in the network when using Dante?
In principle, Gigabit network connection is used directly between two audio contacts, and the network is perfect. A single audio data is collected and transmitted through its own IP data packet. Dante has measured the delay and Gigabit. The standard of the network is the same, both 83.3μs (0.08ms).
Fifth, the performance comparison between Dante and EtherSound?
Dante has no topology limitations and installation complexity; Dante protocol supports up to 192KHz, supports up to 1024 channels of bidirectional transmission on a single link, and the minimum delay can reach 83.3μs, while the EtherSound protocol has a sampling rate of up to 96KHz. A maximum of 512 channels can be supported on a single link, and the audio data stream can only pass through the HUB or Switch in one direction. The minimum delay is 125μs, so Dante outperforms EtherSound in performance. And Dante can provide fault backup, which is a very obvious advantage for on-site activities.
Sixth, the performance comparison between Dante and CobraNet?
The CobraNet protocol is a networked audio transmission technology developed by PeakAudio in the United States in 1996. To date, CobraNet has been widely recognized as the "first ancestor" of all networked audio technologies, and it is considered an effective audio protocol and will continue to serve the industry well. Although supported by more than 50 CobraNet product manufacturers, CobraNet has not yet become an industry standard.
The CobraNet protocol supports a maximum sampling rate of 96KHz. The number of audio channels on a single link is 128 channels of bidirectional transmission, and routing is not supported. The minimum delay is 1/3ms. These data performances are inferior to those of the Dante protocol. And the CobraNet protocol has no fault backup.
Finally, it is about Dante and AVB.
Since communication protocols such as CobraNet and EtherSound are independent protocol standards established by various manufacturers, although some of them follow the Ethernet protocol standard, they are not truly international standards, so the future versatility and compatibility settings exist. Certain obstacles (such as communication between CobraNet devices and EtherSound devices). In this case, the IEEE 802.1 Standards Committee of the IEEE Audio and Video Engineers Working Group of the Institute of Electrical and Electronics Engineers introduced the AVB (AudioVideoBridging) technology standard.
The introduction of AVB is to make up for the loopholes in this field, and it is released in accordance with ISO standard specifications and is provided to manufacturers for free use. Therefore, after the introduction of AVB, the phenomenon of communication protocol contending should gradually disappear. It is no exaggeration to say that the introduction of AVB is a new era in the audio and video industry.
AVB allows multi-channel audio streams and video streams of different sampling rates to be transmitted between different networks and different distances, and supports standard timing and clock signals. All AV devices play cooperatively with reference to a unified time base.
AVB eliminates the buffering delay of the network. When data is transmitted over the network, reliability is better than time. Short-term delay is acceptable in data transmission, but audio and video out-of-sync caused by delay in audio and video transmission is unacceptable. Queue and forwarding rules ensure that different AV streams pass through the network at a specified delay to determine non-AVB devices. The AVB protocol can identify non-AVB devices in the network.
Although the current Firmware version of the ante protocol is a transitional version, it is still a self-proclaimed system transport protocol. Since the architecture of Dante's protocol is fully compliant with the AVB specification, Dante only needs to update the firmware version of all NICs to automatically upgrade to the AVB system without any hardware changes, which makes the Dante protocol completely complete. One of the few products that are compatible with AVB and are in the commercial field.