CN215072430U - Audio switcher for monitoring broadcast television - Google Patents
Audio switcher for monitoring broadcast television Download PDFInfo
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- CN215072430U CN215072430U CN202121418637.4U CN202121418637U CN215072430U CN 215072430 U CN215072430 U CN 215072430U CN 202121418637 U CN202121418637 U CN 202121418637U CN 215072430 U CN215072430 U CN 215072430U
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- 238000009434 installation Methods 0.000 abstract description 3
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- 238000000034 method Methods 0.000 description 2
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- 238000004458 analytical method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an audio frequency switch for radio and television monitoring, including host computer and a plurality of audio frequency integrated circuit board, a plurality of draw-in groove has been seted up on the host computer, the inside of host computer is provided with audio frequency auto-change over device, a plurality of the audio frequency integrated circuit board respectively through a draw-in groove with the audio frequency auto-change over device electricity is connected, be provided with a plurality of audio frequency input interface and displacement buffer on the audio frequency integrated circuit board, audio frequency output interface and a network interface have been seted up on the host computer, and audio frequency auto-change over device is connected to the displacement buffer, audio frequency auto-change over device passes through the audio frequency switching signal that the host computer sent is received to the network interface, and according to audio frequency switching signal passes through the audio frequency output interface output of one of them audio frequency input interface input. The utility model provides an among the prior art audio frequency switch with high costs, occupation space is big, the installation inconvenient, control inflexible technical problem.
Description
Technical Field
The utility model relates to a broadcast monitoring technology field, concretely relates to audio frequency switch for broadcast television monitoring.
Background
With the rapid increase of social informatization, the visual demand of informatization is rapidly expanded, and the splicing display of a large screen gradually becomes a mainstream device for information visualization. In the field of monitoring and supervision of broadcast televisions, a large-screen display system is indispensable equipment for monitoring multiple channels of television programs in real time. The large screen of traditional monitoring mechanism configuration is generally formed by the concatenation of many display device, and single screen display video image such as digital television or liquid crystal display. In recent years, a tiled display screen is often used in a newly built large screen system, and multiple paths of images are displayed on one display in a multi-screen split manner through a screen splitter.
No matter the traditional 'television wall' or the spliced display screen, the image signals of multiple television programs can be displayed simultaneously, and the monitoring requirement of the image layer of the broadcast television is met. Monitoring of broadcast television includes not only the monitoring of video but also the monitoring of audio. But the audio and video are significantly different in playback effect. The multi-picture playing of the video does not interfere with each other, and the acquisition of the image only depends on the focus of the sight. And the audio frequency of multichannel plays together, then the sound wave will be mixed each other certainly, and in addition the reverberation in the building space, the people's ear can't distinguish which sound belongs to which picture, can't be with audio frequency and video one-to-one, just can't accomplish well and monitor the work. Further, the mixed program sound affects normal operation as noise.
Therefore, in an actual multi-picture monitoring environment, only one path of audio is generally played, one path of audio is selected to play sound through manually controlling the volume output of a single device, and the other paths of audio are placed in a mute state. However, due to the characteristics of the remote controller, the infrared emission angle is large, so that only one device is controlled, but a plurality of devices respond together, so that the device is lost, and finally the audio is played in a disordered manner. And in some occasions, a plurality of sound console channels are also configured, the audio channels of a plurality of programs are connected to the input end of the sound console, the output end of the sound console is connected with the power amplifier sound box, and the audio playing channels are switched by pushing and pulling the sound console pusher.
However, when the sound mixing console is used in such a case, the following disadvantages are present:
firstly, the acquisition cost is high. The sound mixing console has a physical attenuation potentiometer (commonly known as a tweeter) for fast and visual control of the level of each channel. For a long time, the number of the physical potentiometers basically represents the grade of the sound console, and the purchase cost of the sound console is higher due to more channels. The important functions of the sound console are amplification, mixing, distribution, tone modification and sound effect processing of multiple paths of input signals, and the sound console is only used for audio switching and is also wasted in performance.
Secondly, the occupied space. In order to get real-time sound feedback, the mixing console must be located in the same room as the large screen. Dozens of programs monitored by the broadcast television are few, and hundreds of programs are many, and in order to meet the requirement of channel playing of all programs, a plurality of sound mixing consoles must be configured, so that a large workbench space is occupied.
Thirdly, the installation is inconvenient. Since the console must be mounted on the table, and the devices for outputting audio signals, such as the server, are often mounted on the machine room cabinet, the audio line connecting the devices is complicated, and if the distance between the machine room and the table is long, the attenuation on the audio line has to be considered, and better wires or amplifiers need to be used.
And fourthly, the control is not flexible. Switching one audio channel by using the sound console requires manual multi-step operation, and the possibility of misoperation is higher as the number of channels is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide an audio frequency switch for broadcast television monitoring, audio frequency switch among the solution prior art, with high costs, occupation space is big, the installation is inconvenient, control inflexible technical problem.
In order to achieve the technical purpose, the utility model adopts the following technical proposal:
the utility model provides an audio switcher for monitoring broadcast television, which comprises a host and a plurality of audio boards, wherein the host is provided with a plurality of clamping grooves, the host is internally provided with an audio switching device, a plurality of audio boards are respectively and electrically connected with the audio switching device through one clamping groove, the audio boards are provided with a plurality of audio input interfaces and displacement buffers, the host is provided with an audio output interface and a network interface, the displacement buffers are connected with the audio switching device, the displacement buffers are connected on a loop formed by the audio input interfaces and the audio output interfaces, wherein,
the audio switching device receives an audio switching signal sent by an upper computer through the network interface, and controls the displacement buffer to output an audio signal input by one of the audio input interfaces through the audio output interface according to the audio switching signal.
Preferably, in the audio switcher for monitoring broadcast television, the audio switcher includes a controller, the displacement buffer is connected to an IO input interface of the controller, and a network connection end of the controller is connected to the network interface.
Preferably, in the audio switcher for monitoring broadcast television, the controller is STM32F769 BGT.
Preferably, in the audio switcher for monitoring broadcast television, the displacement buffer is 74HC 595.
Preferably, in the audio switch for monitoring broadcast television, the network interface is an RJ45 network interface.
Preferably, the audio switcher for monitoring the broadcast television is characterized in that an audio input chip is arranged inside the audio board card, each input end of the audio input chip is electrically connected with an audio input interface, and the output end of the audio input chip is electrically connected with an audio output interface.
Preferably, in the audio switcher for monitoring broadcast television, the model number of the audio input chip is TLV320AIC 3104.
Preferably, in the audio switcher for monitoring broadcast television, the number of the card slots is 8, and the number of the audio input interfaces and the number of the signal output interfaces are both 6.
Preferably, in the audio switcher for monitoring broadcast television, the number of the displacement buffers on each audio board is 1.
Preferably, in the audio switcher for monitoring broadcast television, the host is further provided with a power interface.
Compared with the prior art, the utility model provides an audio frequency switch ware for radio and television monitoring, because a plurality of audio signal can be input to the audio frequency integrated circuit board, the signal of a plurality of audio frequency integrated circuit board inputs can be input to the host computer, the input of a plurality of audio signal of equipment receipt has been realized, through set up audio frequency auto-change over device in the host computer, accessible audio frequency auto-change over device realizes the output of audio frequency of arbitrary all the way, thereby avoid setting up many sound consoles, purchase cost and occupation space have been reduced, and only need a network interface to connect the host computer and can realize the audio frequency switching function, the line connection of complicacy has been avoided, easy to assemble, in addition, because need not set up many sound consoles, avoid the maloperation, conveniently carry out the control of audio frequency switching.
Drawings
Fig. 1 is a schematic structural diagram of an audio switch for monitoring broadcast television according to a preferred embodiment of the present invention;
fig. 2 is a block diagram of an audio switch device for monitoring broadcast tv according to a preferred embodiment of the present invention;
fig. 3 is a schematic diagram of an audio switch for monitoring broadcast television according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2, an audio switcher for monitoring broadcast television according to an embodiment of the present invention includes a host 1 and a plurality of audio boards 2, the host 1 is provided with a plurality of slots 1a, the host 1 is provided with an audio switching device 11 inside, the plurality of audio boards 2 are electrically connected to the audio switching device 11 through a slot 1a, specifically, the audio board 2 can be electrically connected to the slot 1a through a gold finger of the audio board 2, and then electrically connected to the audio switching device 11 through the slot 1a, the audio board 2 is provided with a plurality of audio input interfaces 2a and a displacement buffer 21, the host 1 is provided with an audio output interface 1b and a network interface 1c, the displacement buffer 21 is connected to the audio switching device 11, the displacement buffer 21 is connected to a loop formed by the audio input interfaces 2a and the audio output interface 1b, wherein,
the audio switching device 11 receives an audio switching signal sent by an upper computer through the network interface 1c, and controls the displacement buffer 21 to output an audio signal input by one of the audio input interfaces 2a through the audio output interface 1b according to the audio switching signal.
Specifically, the utility model discloses a set up a plurality of draw-in grooves 1a on host computer 1, can connect a plurality of audio frequency integrated circuit boards 2, be provided with a plurality of audio input interfaces 2a simultaneously on every audio frequency integrated circuit board 2, thereby make every audio frequency integrated circuit board 2 can input a plurality of audio signal, and host computer 1 can be through the displacement buffer 21 of 11 output serial signal of audio frequency auto-change over device to audio frequency integrated circuit board 2, whether the input signal of displacement buffer 21 control audio frequency integrated circuit board 2 is connected to audio output interface 1b, thereby can realize a host computer 1 and input a plurality of audio signal simultaneously, occupation space has been reduced. Furthermore, the utility model discloses a set up audio frequency auto-change over device 11 in host computer 1, receive the audio frequency switching signal that the host computer sent through audio frequency switching device 11, and according to audio frequency switching signal controls audio output interface 1 b's output, when receiving audio frequency switching signal, passes through the signal of the input of audio input interface 2a that corresponds audio output interface 1b output to the switching of audio frequency has been realized.
The utility model discloses in because a plurality of audio signal can be input to audio frequency integrated circuit board 2, host computer 1 can control audio frequency integrated circuit board 2's input and output, the input that a equipment received a plurality of audio signal has been realized, through set up audio frequency auto-change over device 11 in host computer 1, the output of audio frequency of arbitrary the same kind is realized to accessible audio frequency auto-change over device 11, thereby avoid setting up many sound consoles, purchase cost and occupation space have been reduced, and only need a network interface to connect the host computer and can realize the audio frequency switching function, complicated line connection has been avoided, easy to assemble, furthermore, because need not set up many sound consoles, avoid the maloperation, conveniently carry out the control that the audio frequency switched.
In addition, if an audio channel needs to be added, the audio board card 2 can be directly plugged in a hot plug mode under the condition that the host 1 is not powered down, and the method is simple and convenient. The audio switch may be added if the number of channels exceeds the maximum number of channels supported by the audio switch. One upper computer can manage a plurality of switchers and realize centralized and unified management.
In a preferred embodiment, with reference to fig. 2, the audio switching apparatus 11 includes a controller 111, an IO input interface of the displacement buffer 21 is connected to the controller 111, and a network connection terminal of the controller 111 is connected to the network interface 1 c.
Specifically, the audio switching device 11 is used to implement functions such as network communication, instruction analysis, state display, and channel switching, and in the channel switching control, a shift buffer 21 with serial input and parallel output is adopted, multiple pieces of data are cascaded, and each bit represents the on-off state of one channel, so that more audio channels can be controlled by using fewer controllers GPIO. In other words, each audio channel is equivalent to one output coil, and the controller 111 controls the on-off of the output coil after receiving the audio switching signal sent by the upper computer, so that the switching of the audio channels can be realized.
In a preferred embodiment, the controller is of a typeSTM32F769BGT, which is based on high performance
The 32-bit RISC core processor, operating at 216MHz, is equipped with an Ethernet RMII interface. And the open-source lightweight TCP/IP protocol stack is transplanted, and the ModbusTCP application layer protocol can be operated on the basis. The model of the displacement buffer is 74HC595, and 8-bit serial input and parallel output can be realized.
In a preferred embodiment, a default IP address is set on the controller 111, a PC is used to set IP addresses of the same network segment in the same lan, and controller management software is installed on the PC, so that the controller 111 is controlled by the software to implement switching and polling of audio channels.
In a preferred embodiment, the network interface 1c is an RJ45 network interface, which facilitates network connection.
In a preferred embodiment, please refer to fig. 3, an audio input chip is disposed inside the audio board 2, each input end of the audio input chip is electrically connected to an audio input interface 2a, and an output end of the audio input chip is electrically connected to an audio output interface 1 b. The audio board card 2 supports multiple input and multiple output, and the controller can adjust EQ, volume and high and low sound effects of each channel of the audio input chip through the 12C interface. In specific implementation, the audio input chip adopts TLV320AIC3104 of TI company, and the single chip can support 6 single-end inputs and 6 Line out outputs.
In a preferred embodiment, the number of the card slots 1a is 8, the number of the audio input interfaces 2a is 6, and the number of the shift buffers 21 on each audio card 2 is 1, so that the host 1 fully plugged with 8 audio cards 2 can support up to 48 audio inputs, and the audio outputs of all the audio cards 2 are collected to the Line out interface of the chassis. All audio frequency integrated circuit boards 2 are plug-and-play, convenient dilatation.
In a preferred embodiment, the host 1 is further provided with power interfaces 1d, the number of the power interfaces 1d is 2, the power interfaces are all used for inputting 220V alternating-current power, one power interface is used as a main power interface, and the other power interface is used as a standby power interface.
To sum up, the utility model provides an audio frequency switch ware for radio and television monitoring, because a plurality of audio signal can be input to the audio frequency integrated circuit board, the signal of a plurality of audio frequency integrated circuit board inputs can be input to the host computer, the input of a plurality of audio signal of equipment receipt has been realized, through set up audio frequency auto-change over device in the host computer, the output of audio frequency of arbitrary all the way is realized to accessible audio frequency auto-change over device, thereby avoid setting up many sound consoles, purchase cost and occupation space have been reduced, and only need a network interface to connect the host computer and can realize the audio frequency switching function, the line connection of complicacy has been avoided, easy to assemble, in addition, because need not set up many sound consoles, avoid the maloperation, conveniently carry out the control of audio frequency switching.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. An audio switcher for monitoring broadcast television is characterized by comprising a host and a plurality of audio board cards, wherein the host is provided with a plurality of clamping grooves, an audio switching device is arranged in the host, the audio board cards are respectively and electrically connected with the audio switching device through one clamping groove, the audio board cards are provided with a plurality of audio input interfaces and displacement buffers, the host is provided with an audio output interface and a network interface, the displacement buffers are connected with the audio switching device, the displacement buffers are connected on a loop formed by the audio input interfaces and the audio output interfaces, wherein,
the audio switching device receives an audio switching signal sent by an upper computer through the network interface, and controls the displacement buffer to output an audio signal input by one of the audio input interfaces through the audio output interface according to the audio switching signal.
2. The audio switch for monitoring broadcasting of claim 1, wherein the audio switch device comprises a controller, the shift buffer is connected to an IO input interface of the controller, and a network connection terminal of the controller is connected to the network interface.
3. The audio switcher for broadcast television monitoring of claim 2 wherein the controller is model number STM32F769 BGT.
4. The audio switcher for broadcast television monitoring of claim 2, wherein the displacement buffer is model 74HC 595.
5. The audio switch for broadcast television monitoring of claim 1, wherein the network interface is an RJ45 network interface.
6. The audio switcher for monitoring the broadcast television of claim 1, wherein an audio input chip is disposed inside the audio board, each input end of the audio input chip is electrically connected to an audio input interface, and each output end of the audio input chip is electrically connected to an audio output interface.
7. The audio switcher for monitoring of broadcast television according to claim 6, wherein the model number of said audio input chip is TLV320AIC 3104.
8. The audio switcher for monitoring of broadcast television of claim 2, wherein the number of the card slots is 8, and the number of the audio input interfaces and the number of the signal output interfaces are both 6.
9. The audio switcher for broadcast television monitoring of claim 8 wherein the number of shift buffers is 6.
10. The audio switcher for monitoring broadcast television of claim 1, wherein the host further comprises a power interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121418637.4U CN215072430U (en) | 2021-06-24 | 2021-06-24 | Audio switcher for monitoring broadcast television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121418637.4U CN215072430U (en) | 2021-06-24 | 2021-06-24 | Audio switcher for monitoring broadcast television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215072430U true CN215072430U (en) | 2021-12-07 |
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| CN202121418637.4U Active CN215072430U (en) | 2021-06-24 | 2021-06-24 | Audio switcher for monitoring broadcast television |
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- 2021-06-24 CN CN202121418637.4U patent/CN215072430U/en active Active
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