CN214154542U

CN214154542U - AES67 audio gateway of distributed system

Info

Publication number: CN214154542U
Application number: CN202120210281.9U
Authority: CN
Inventors: 邱建; 谢海啸; 张焕胜; 余晖良; 马庆贺; 郭昶龙; 李长川
Original assignee: Beijing Aotewei Technology Co ltd
Current assignee: Beijing Aotewei Technology Co ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-09-07
Anticipated expiration: 2031-01-26

Abstract

A distributed system AES67 audio gateway, comprising: the audio source comprises an AES67 audio receiving device, an AES67 audio signal source, an AES67 gateway, a decoder, an encoder, an analog audio signal source and an analog audio receiving device; the AES67 gateway receives the audio signal sent by the AES67 audio signal source and processes the audio signal through the decoder, and the analog audio receiving device is used for receiving the analog signal processed by the decoder; the analog signal sent by the analog audio signal source is processed by an encoder and enters an AES67 gateway, and the AES67 audio receiving device is used for receiving the digital signal in the AES67 gateway; the method has the technical key points that an AES67 gateway is adopted to guide the distributed audio signals and AES67 audio signals to an AES67 gateway, and the conversion and transmission between the audio signals of the distributed system and the AES67 audio signals are realized in the AES67 gateway in a digital mode, so that the problems of audio signal precision loss and quality reduction caused by multiple D/A and A/D conversions are solved, and the fidelity of the audio signals is greatly improved.

Description

AES67 audio gateway of distributed system

Technical Field

The utility model belongs to the technical field of the audio transmission, specifically a distributed system AES67 audio gateway.

Background

Generally, distributed systems such as distributed agent cooperation based on ethernet, distributed audio/video matrix and the like are composed of an encoder, a decoder, a network switch and the like; when the system needs to transmit audio signals with AES67 audio equipment, 2 signal transmission directions exist, firstly, the audio signals are transmitted from audio of a distributed system to the AES67 audio equipment, 1 AES67 audio conversion device needs to be introduced, an analog audio output port of a decoder is connected with an analog audio input port of the AES67 audio conversion device through an analog audio cable, and then a network port of the AES67 audio conversion device is connected with a network port of the AES67 audio equipment through a network cable;

secondly, audio signals are transmitted from AES67 audio equipment to a distributed system, 1 AES67 audio conversion device is also required to be introduced, an analog audio output port of the AES67 audio conversion device is connected with an analog audio input port of an encoder through an analog audio cable, and a network port of the AES67 audio conversion device is connected with a network port of the AES67 audio equipment through a network cable;

in any of the above transmission directions, due to the existence of multiple D/a and a/D conversions, the accuracy of the audio signal is lost during transmission, which results in the problem of degradation of the quality of the audio signal.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming with the audio signal precision loss and the problem of quality degradation that leads to through the transmission audio signal of simulation audio cable between distributed system and the AES67 audio equipment, providing a distributed system AES67 audio gateway.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a distributed system AES67 audio gateway, comprising:

the audio source comprises an AES67 audio receiving device, an AES67 audio signal source, an AES67 gateway, a decoder, an encoder, an analog audio signal source and an analog audio receiving device;

the audio signal sent by the AES67 audio signal source enters an AES67 gateway and is processed by the decoder, and the analog audio receiving device is used for receiving the analog signal processed by the decoder;

the analog signal sent by the analog audio signal source is processed by an encoder and enters an AES67 gateway, and the AES67 audio receiving device is used for receiving the digital signal in the AES67 gateway.

Preferably, the AES67 gateway may be built-in with an AES67 sound card, and the AES67 gateway, the AES67 audio signal source, and the AES67 audio receiving apparatus may all be connected to a switch by a set cable, the switch being used for networking of the distributed system encoder, decoder, AES67 gateway, AES67 audio signal source, and AES67 audio receiving apparatus.

Preferably, the AES67 sound card includes a virtual sound card and a hardware sound card.

Preferably, the number of the switches can be one or more, two of the switches can be connected with the AES67 gateway through cables, one group of the switches can be connected with the AES67 audio receiving device and the AES67 audio signal source through cables, and the other group of the switches can be connected with the decoder and the encoder through cables.

Preferably, the surface of the AES67 gateway is provided with a network port, and both the distributed system audio and the AES67 audio enter the AES67 gateway through the network port.

Preferably, the number of the network ports can be one or more, audio of the distributed system enters the AES67 gateway through one network port, and the AES67 audio enters the AES67 gateway through the other network port.

Compared with the prior art, the utility model provides a distributed system AES67 audio gateway has following beneficial effect:

the utility model discloses an adopt AES67 gateway, with distributed audio signal and AES67 audio signal drainage to AES67 gateway, inside digital mode of adoption of AES67 gateway realizes conversion and transmission between distributed system audio signal and the AES67 audio signal to avoid the audio signal loss of precision and the problem of quality degradation that many times DA and AD conversion caused, very big improvement audio signal's fidelity.

Drawings

Fig. 1 is a flow chart of a prior art audio transmission system;

fig. 2 is a flow chart of the audio transmission system of the present invention;

fig. 3 is one of the usage scenarios of the present invention;

fig. 4 is a second schematic view of the usage scenario of the present invention;

fig. 5 is one of the architecture diagrams of the AES 67-based gateway of the present invention;

fig. 6 is a second architecture diagram of the AES67 gateway;

fig. 7 is one of the structural diagrams of the AES67 gateway of the present invention;

fig. 8 is a second structure diagram of the AES67 gateway of the present invention.

Reference numerals: 1. AES67 audio receiving means; 2. an AES67 audio signal source; 3. an AES67 gateway; 4. a decoder; 5. an encoder; 6. an analog audio signal source; 7. an analog audio receiving device; 8. a switch.

Detailed Description

The following further describes a specific embodiment of the AES67 audio gateway of the distributed system of the present invention with reference to fig. 1. The utility model relates to a distributed system AES67 audio gateway is not limited to the description of the following embodiment.

As shown in fig. 2-8, a distributed system AES67 audio gateway includes:

an AES67 audio receiving device 1, an AES67 audio signal source 2, an AES67 gateway 3, a decoder 4, an encoder 5, an analog audio signal source 6 and an analog audio receiving device 7;

the audio signal sent by the AES67 audio signal source 2 enters the AES67 gateway 3 and is processed by the decoder 4, and the analog audio receiving device 7 is used for receiving the analog signal processed by the decoder 4;

the analog signal from the analog audio signal source 6 is processed by the encoder 5 and enters the AES67 gateway 3, and the AES67 audio receiving apparatus 1 is used to receive the digital signal in the AES67 gateway 3.

Specifically, in a distributed agent cooperation and distributed audio/video matrix distributed system based on an IP network, an encoder 5 is used for encoding an audio signal and transmitting the encoded audio signal to a decoder 4 through an ethernet switch, and the decoder 4 receives a code stream and decodes the code stream and outputs the decoded code stream to an audio receiving device;

the AES67 audio equipment (comprising the AES67 audio receiving device 1 and the AES67 audio signal source 2) can receive and transmit AES67 digital audio signals, and the bottom layer is also built on the basis of an IP network.

As shown in fig. 2, the AES67 gateway 3 may have an AES67 sound card built therein, and the AES67 gateway 3, the AES67 audio signal source 2, and the AES67 audio receiving apparatus 1 may all be connected to the switch 8 by setting cables, and the switch 8 is used for networking the distributed system encoder 5, the decoder 4, the AES67 gateway 3, the AES67 audio signal source 2, and the AES67 audio receiving apparatus 1.

As shown in fig. 2, AES67 sound cards include virtual sound cards and hardware sound cards.

Example 1

As shown in fig. 3 to 4, the number of the switches 8 may be one or more, and two switches 8 may be connected to the AES67 gateway 3 by cables, wherein one group of the switches 8 may be connected to the AES67 audio receiving apparatus 1 and the AES67 audio signal source 2 by cables, and the other group of the switches 8 may be connected to the decoder 4 and the encoder 5 by cables;

the cables mentioned in the application can adopt 6 types of network cables or ten-gigabit optical fibers;

reference to figures 3 and 4 are schematic diagrams of the present invention,

fig. 3 is applicable to a scenario in which the distributed system IP network and the AES67 device IP network are in the same switch; fig. 4 is applicable to a scenario where the distributed system IP network and the AES67 device IP network are in different switches.

Example 2

Fig. 5 and fig. 6 are architecture diagrams of an audio gateway applying AES67 provided by the present embodiment, except that the distributed audio and the AES67 audio of fig. 5 enter the AES67 gateway 3 through the same port, and fig. 6 shows that the distributed audio and the AES67 audio enter the AES67 gateway 3 through different ports;

an audio signal source enters a distributed system through an encoder 5, enters an AES67 gateway 3 through the drainage of the distributed system, and enters AES67 audio equipment through digital conversion and transmission inside the gateway; similarly, the AES67 audio is introduced into the AES67 gateway 3 by being streamed by the AES67 audio equipment, is converted and transmitted into a distributed system in a digital mode inside the gateway, and is finally decoded and output to the analog audio receiving device 7 by the decoder 4.

Example 3

As shown in fig. 7-8, the surface of the AES67 gateway 3 is provided with a port through which both distributed system audio and AES67 audio enter the AES67 gateway 3.

As shown in fig. 7-8, the number of the network ports can be one or more, the audio of the distributed system enters into the AES67 gateway 3 through one of the network ports, and the audio of the AES67 enters into the AES67 gateway 3 through the other network port.

Fig. 7 and 8 are structural diagrams of the AES67 gateway 3, except that fig. 7 shows that the distributed audio and the AES67 audio enter the AES67 gateway 3 through the same port, and fig. 8 shows that the distributed audio and the AES67 audio enter the AES67 gateway 3 through different ports.

Note that AES67 audio in this application: the audio is segmented and encapsulated in IP (network protocol) packets for transmission in a standard IP network. The data packet contains time information as well as the source and destination network addresses so that they can be efficiently routed through the network to the correct destination. When a device receives the AES67 audio packets, it reconstructs them into a continuous digital audio stream and then plays, records or digitally processes them according to the device's role in the audio system;

distributed: the system refers to distributed systems such as distributed KVM seat cooperation and distributed audio and video matrixes based on the Ethernet;

KVM: the KVM represents a keyboard, a display and a mouse, that is, a group of the keyboard, the display and the mouse is used for controlling a plurality of devices, and the KVM plays an important role in remote scheduling and monitoring. The KVM technology can send various data materials in a scheduling information network to a remote terminal, providing convenience for a next-level scheduling mechanism, and thus, even if a subordinate scheduling mechanism does not establish a scheduling data network, information sharing can be achieved.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A distributed system AES67 audio gateway, comprising:

the device comprises an AES67 audio receiving device (1), an AES67 audio signal source (2), an AES67 gateway (3), a decoder (4), an encoder (5), an analog audio signal source (6) and an analog audio receiving device (7);

the AES67 gateway (3) receives the audio signal sent by the AES67 audio signal source (2) and processes the audio signal through the decoder (4), and the analog audio receiving device (7) is used for receiving the analog signal processed by the decoder (4);

the analog signal sent by the analog audio signal source (6) is processed by an encoder (5) and enters an AES67 gateway (3), and the AES67 audio receiving device (1) is used for receiving the digital signal in the AES67 gateway (3).

2. The distributed system AES67 audio gateway of claim 1, wherein: the AES67 gateway (3) can be internally provided with an AES67 sound card, the AES67 gateway (3), the AES67 audio signal source (2) and the AES67 audio receiving device (1) can be connected with the switch (8) through cables, and the switch (8) is used for networking the distributed system encoder (5), the decoder (4), the AES67 gateway (3), the AES67 audio signal source (2) and the AES67 audio receiving device (1).

3. The distributed system AES67 audio gateway of claim 2, wherein: the AES67 sound card comprises a virtual sound card and a hardware sound card.

4. The distributed system AES67 audio gateway of claim 2, wherein: the number of the switches (8) can be one or more, two switches (8) can be connected with an AES67 gateway (3) through cables, one group of the switches (8) can be connected with an AES67 audio receiving device (1) and an AES67 audio signal source (2) through cables, and the other group of the switches (8) can be connected with a decoder (4) and an encoder (5) through cables.

5. The distributed system AES67 audio gateway of claim 1, wherein: the surface of the AES67 gateway (3) is provided with a network port, and both distributed system audio and AES67 audio enter the AES67 gateway (3) through the network port.

6. The distributed system AES67 audio gateway of claim 5, wherein: the number of the network ports can be one or more, audio of the distributed system enters the AES67 gateway (3) through one network port, and the AES67 audio enters the AES67 gateway (3) through the other network port.