CN209234059U - Microphone work station and broadcast system - Google Patents
Microphone work station and broadcast system Download PDFInfo
- Publication number
- CN209234059U CN209234059U CN201920173883.4U CN201920173883U CN209234059U CN 209234059 U CN209234059 U CN 209234059U CN 201920173883 U CN201920173883 U CN 201920173883U CN 209234059 U CN209234059 U CN 209234059U
- Authority
- CN
- China
- Prior art keywords
- input
- unit
- main control
- stationary contact
- microphone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model discloses a kind of microphone work station and broadcast systems, including main control unit, microphone and input/output channel, input/output channel includes coding unit, decoding unit and selecting unit, the input terminal of coding unit and the output end of decoding unit are separately connected selecting unit, the control terminal of selecting unit connects main control unit, main control unit is switched to external or decoding unit output by the input that selecting unit controls coding unit and is switched to outside, configures broadcast channel or acquisition channel for input/output channel；The audio input end of microphone connects the coding input end of coding unit by Acquisition Circuit, transmits main control unit after encoding by coding unit.The utility model microphone work station has the advantages that multiple functional and control is flexible.
Description
Technical field
The utility model belongs to broadcast technology field, in particular to a kind of microphone work station and broadcast system.
Background technique
With the rapid development being constantly progressive with science and technology in epoch, the functional requirement of modern architecture and original building
There is apparent difference, the high speed development of light current technology is especially built, by electronic technology, mechanics of communication, network technology, calculating
The state-of-the-art technology of the series such as machine technology, automatic control technology, sensor technology introduces, and mentions the service function of building significantly
Height, comprehensive stronger, the field being related to is wider.A component part of the public broadcasting as weak electricity system, be closely connected people
The modern life, music can be played and do service propaganda and paging broadcast, moreover it is possible to as the urgent wide of fire incident
It broadcasts, is a kind of extremely strong broadcast system of uniformity, be widely used in cell, market, hotel, office cell, airport, harbour, station
Equal places are indispensable parts in the modern life and work.
In current broadcast system, an Audio Matrix host is generally included, is then in control with Audio Matrix host
Peripheral circuit is arranged in the heart, and peripheral circuit includes the microphone work station for artificially being broadcasted, in existing broadcast system, microphone
Work station is substantially the function of only one microphone, is transmitted in broadcast system by the audio signal of microphone input, by
Broadcast system control is played to each audio zone.Therefore in existing broadcast system, microphone workstation function is single, using inadequate
It is convenient.
Utility model content
The first of the utility model the shortcomings that aiming to overcome that the prior art with it is insufficient, a kind of microphone work station is provided,
The microphone work station has the advantages that multiple functional and control is flexible.
The second of the utility model is designed to provide a kind of broadcast system.
First purpose of the utility model is achieved through the following technical solutions: a kind of microphone work station, including microphone, master
Control unit and input/output channel, input/output channel includes coding unit, decoding unit and selecting unit, coding unit
The output end of input terminal and decoding unit is separately connected selecting unit, and the control terminal of selecting unit connects main control unit, master control list
Member is switched to external or decoding unit output by the input that selecting unit controls coding unit and is switched to outside, will be defeated
Enter/output channel is configured to broadcast channel or acquisition channel；The audio input end of microphone connects coding list by Acquisition Circuit
The coding input end of member, transmits main control unit after encoding by coding unit.
Preferably, selecting unit includes relay in input/output channel, and relay includes two groups of contacts, and respectively the
One group of contact and second group of contact, first group of contact is by the first normally closed stationary contact, the first normally opened stationary contact and the first movable contact group
At second group of contact is made of the second normally closed stationary contact, the second normally opened stationary contact and the second movable contact；The control terminal of relay connects
Main control unit is connect, the first movable contact is controlled by main control unit and connects the first normally closed stationary contact or the first normally opened stationary contact, is passed through
Main control unit controls the second movable contact and connects the second normally closed stationary contact or the second normally opened stationary contact；
The left channel audio signal decoded output of decoding unit is sequentially connected the 7th power amplification circuit and the 8th power
The first normally closed stationary contact or the first normally opened stationary contact are connected after amplifying circuit；First normally opened stationary contact or the first normally closed stationary contact connect
Connect the input of differential amplifier circuit；The decoded right channel audio signal decoded output of decoding unit is sequentially connected the 9th power and puts
Connect the second normally closed stationary contact or the second normally opened stationary contact after big circuit and the tenth power amplification circuit, the second normally opened stationary contact or
The input of second normally closed stationary contact connection differential amplifier circuit, the input terminal of the output connection coding unit of differential amplifier circuit,
External audio signal is inputted by the second normally opened stationary contact or the second normally closed stationary contact；
Input/output channel connects external audio equipment or external sound source by the first movable contact and the second movable contact；
The left channel audio signal input of microphone and right channel audio signal input after Acquisition Circuit acquires respectively
It is output to the left channel audio signal coding input end and right channel audio signal coding input end of coding unit, it is single by coding
Main control unit is transmitted after primitive encoding.
Preferably, Acquisition Circuit includes inductance L4, inductance L5, PNP triode Q3 and NPN triode Q4；Wherein inductance L5
One end connects the left channel audio signal input terminal of microphone, and the one end inductance L4 connects the left channel audio signal input of microphone
End；The inductance L5 other end connects the anode of electrolytic capacitor E17 by resistance R34, and the inductance L4 other end passes through resistance R35 connection electricity
Solve the anode of capacitor E17, the negativing ending grounding of electrolytic capacitor E17；The anode of electrolytic capacitor E17 passes through resistance R33 connecting triode
The collector of Q3, the emitter of triode Q3 connect DC power supply, and the base stage of triode Q3 passes through resistance R30 connection direct current
Source, the base stage of triode Q3 pass through the collector of resistance R29 connecting triode Q4, the emitter ground connection of triode Q4, triode
The base stage of Q4 is grounded by resistance R27 connection main control unit, the base stage of triode Q4 by resistance R28；The inductance L5 other end and
Capacitor C30 is connected between the inductance L4 other end, the inductance L5 other end connects one end of capacitor C93, and the other end of capacitor C93 is made
For the left channel audio signal output end of Acquisition Circuit；4 other end of inductance connects one end of capacitor C93, the other end of capacitor C83
Right channel audio signal output end as Acquisition Circuit.
It preferably, further include loudspeaker, left channel audio signal decoded output and the right audio channel letter of decoding unit
Number decoded output is connected respectively to two input terminals of loudspeaker by power amplification circuit.
It preferably, further include touch screen connected to the main control unit.
It preferably, further include the storage card for being also used to store local music；Storage card connects main control unit.
It preferably, further include internet communication module, main control unit is linked into internet by internet communication module, leads to
Internet is crossed to be communicated with the host computer in broadcast system.
Further, internet communication module is ethernet interface module.
Further, the host computer in broadcast system is cloud server.
Second purpose of the utility model is achieved through the following technical solutions: a kind of broadcast system, including the utility model
Microphone work station described in first purpose.
The utility model compared with the existing technology have following advantages and effects
(1) the utility model microphone work station includes main control unit, microphone and input/output channel, and input/output is logical
Road includes coding unit, decoding unit and selecting unit, and the input terminal of coding unit and the output end of decoding unit are separately connected
Selecting unit, the control terminal of selecting unit connect main control unit, and main control unit controls the input of coding unit by selecting unit
It is switched to external or decoding unit output and is switched to outside, configure broadcast channel for input/output channel or acquisition is logical
Road；The audio input end of microphone connects the coding input end of coding unit by Acquisition Circuit, after being encoded by coding unit
Transmit main control unit.In the present invention, microphone work station not only includes original microphone function, while can be with
Acquisition channel or broadcast channel are configured by input/output channel, is believed by the audio that acquisition channel can acquire external sound source
Number, external audio equipment is played to by the audio signal that broadcast channel can issue broadcast system.In the present invention,
Each input/output channel of microphone work station can arbitrarily be configured to broadcast channel or acquisition channel according to demand, not need multiple
Miscellaneous line, therefore, the utility model microphone work station have the advantages that multiple functional and control is flexible.
(2) in the utility model microphone work station, it is provided with touch screen connected to the main control unit, in the utility model
In, broadcast system can be sent to network microphone work station for the catalogue of program request and show in touch screen, and user can lead to
The program request catalogue crossed on touch screen sends on-demand request to broadcast system host computer.
(3) in the utility model microphone work station, microphone work station can be with boombox and built-in for storing
The storage card of local music, network microphone work station the local audio signal of storage can be sent to broadcast system host computer or
It is sent to external audio equipment by microphone work station broadcast channel itself to play out, the loudspeaker being arranged in microphone work station
The local audio signal stored in the audio signal or storage card that can be sent for broadcast system plays out.
(4) in the utility model microphone work station, including internet communication module, main control unit can be by interconnecting Netcom
News module is linked into internet, is communicated by internet with the host computer in broadcast system, such as cloud server, this reality
With novel in such a way that internet is communicated with broadcast system host computer, microphone work station in broadcast system can be convenient
Extension.
Detailed description of the invention
Fig. 1 is the structure principle chart of the utility model microphone work station.
Fig. 2 a is main control unit MCU circuit diagram in microphone work station.
Fig. 2 b is that input/output channel part circuit is former in microphone work station.
Fig. 2 c is the circuit part that coding unit coding input end is connected in input/output channel in microphone work station
Circuit diagram.
Fig. 2 d is the circuit diagram of microphone Acquisition Circuit in microphone work station.
Fig. 2 e is the circuit diagram of VS1053 codec chip and decoded output partial circuit in microphone work station.
Fig. 2 f is the circuit diagram of microphone work station boombox.
Specific embodiment
The present invention will be further described in detail with reference to the embodiments and the accompanying drawings, but the implementation of the utility model
Mode is without being limited thereto.
Embodiment
Present embodiment discloses a kind of microphone work stations, as shown in Figure 1, main control unit, microphone work station and input/output
Channel, input/output channel include coding unit, decoding unit and selecting unit, the input terminal and decoding unit of coding unit
Output end be separately connected selecting unit, the control terminal of selecting unit connects main control unit, and main control unit passes through selecting unit control
The input of coding unit processed is switched to external or decoding unit output and is switched to outside, configures input/output channel to
Broadcast channel or acquisition channel；The audio input end of microphone connects the coding input end of coding unit by Acquisition Circuit, leads to
Main control unit is transmitted after crossing coding unit coding.
In the present embodiment, the number in input/output channel can be one or more.
In the present embodiment, microphone work station is that network audio expands device, and main control unit is connected with internet communication module,
Main control unit is linked into internet by internet communication module, can be communicated by internet with the host computer of broadcast system,
Wherein host computer can be cloud server.Internet communication module can be ethernet interface module, ethernet interface module
Mainly it is made of ethernet PHY chip DP83848VYB and network transformer.In the present embodiment, main control unit access interconnection
After net, it can receive the audio signal that host computer is sent in broadcast system, control signal etc., the audio of acquisition can also be believed
Number, request signal etc. be sent to the host computer of broadcast system, wherein the audio signal acquired includes microphone work station broadcast channel
The Acquisition Circuit audio signal collected that the audio signal and microphone of acquisition are connected.
In the present embodiment, the host computer of broadcast system can issue control instruction to main control unit, pass through main control unit
The working condition of control selections unit is switched to external or decoding unit with the input for controlling coding unit by selecting unit
Output is switched to outside.In the present embodiment, when the host computer of broadcast system issues control instruction, so that main control unit passes through choosing
The input of unit control coding unit is selected when being switched to outside, i.e., configuration input/output channel is acquisition channel, external audio letter
Number being input to coding unit by selecting unit is encoded, and the audio signal after coding sends main control unit, main control unit to
The host computer of broadcast system is sent to by internet communication module；When the host computer of broadcast system issues control instruction, so that
When main control unit is switched to outside by the output that selecting unit controls decoding unit, i.e., configuration input/output channel is broadcast
Channel, the audio signal that main control unit is sent by the host computer that internet communication module receives broadcast system, main control unit will
The audio signal that the host computer of broadcast system is sent sends decoding unit to and is decoded, and decoded audio signal passes through selection
Unit is output to outside.In addition, the audio input signal of microphone is input to coding unit after acquiring by Acquisition Circuit, pass through
Coding unit sends main control unit to after being encoded, and the host computer of broadcast system is uploaded to by main control unit, broadcast system
Host computer can be played out according to demand control audio signal is played in respective audio area.
In the present embodiment, as shown in Figure 2 b, selecting unit includes relay 16, relay in each input/output channel
Including two groups of contacts, respectively first group of contact and second group of contact, first group of contact is by the first normally closed stationary contact, first normally opened
Stationary contact and the first movable contact composition, second group of contact is by the second normally closed stationary contact, the second normally opened stationary contact and the second movable contact
Composition；The control terminal of relay connects main control unit, controls the first movable contact by main control unit and connects the first normally closed stationary contact
Or the first normally opened stationary contact, pass through main control unit and control the second movable contact and connects the second normally closed stationary contact or the second normally opened stationary contact
Point.
As shown in Fig. 2 a to 2e, the left channel audio signal decoded output of decoding unit is sequentially connected the 7th power amplification
The first normally closed stationary contact or the first normally opened stationary contact are connected after circuit 17 and the 8th power amplification circuit 18；First normally opened stationary contact
Or first normally closed stationary contact connection differential amplifier circuit 19 input；The decoded right channel audio signal decoded output of decoding unit
End connects the second normally closed stationary contact or second often after being sequentially connected the 9th power amplification circuit 20 and the tenth power amplification circuit 21
Open stationary contact, the input of the second normally opened stationary contact or the second normally closed stationary contact connection differential amplifier circuit 19, differential amplifier circuit
The input terminal of 19 output connection coding unit, inputs external audio letter by the second normally opened stationary contact or the second normally closed stationary contact
Number.Input/output channel connects external audio equipment or external sound source by the first movable contact and the second movable contact；
As shown in Figure 2 c, the signal that differential amplifier circuit 19 exports connects master control list by the 11st power amplification circuit 22
Member sends broadcast system to after carrying out analog-to-digital conversion by main control unit, is used as detection trigger signal.
As illustrated in figures 2 c and 2d, the left channel audio signal input and right channel audio signal input of microphone are by acquisition
Left channel audio signal coding input end and the right channel audio signal coding that coding unit is respectively outputted to after circuit acquisition are defeated
Enter end, transmits main control unit after encoding by coding unit；As shown in Figure 2 d, while the left channel audio signal of microphone inputs
It is output to after Acquisition Circuit acquires in the 12nd power amplification circuit 23, the connection of 23 output end of the 12nd power amplification circuit
Main control unit sends broadcast system to after the signal of the 12nd power amplification circuit output is carried out analog-to-digital conversion, is used as detection
Trigger signal.
In the present embodiment, as shown in Figure 2 d, the Acquisition Circuit of microphone includes inductance L4, inductance L5, PNP triode Q3
With NPN triode Q4；Wherein the left channel audio signal input terminal of the one end inductance L5 connection microphone, the one end inductance L4 connect wheat
The left channel audio signal input terminal of gram wind；The inductance L5 other end connects the anode of electrolytic capacitor E17, inductance by resistance R34
The L4 other end passes through the anode of resistance R35 connection electrolytic capacitor E17, the negativing ending grounding of electrolytic capacitor E17；Electrolytic capacitor E17's
Anode passes through the collector of resistance R33 connecting triode Q3, and the emitter of triode Q3 connects DC power supply, the base of triode Q3
By resistance R30 connection DC power supply, the base stage of triode Q3 passes through the collector of resistance R29 connecting triode Q4, three poles for pole
The emitter of pipe Q4 is grounded, and for the base stage of triode Q4 by resistance R27 connection main control unit, the base stage of triode Q4 passes through resistance
R28 ground connection.Capacitor C30 is connected between the inductance L5 other end and the inductance L4 other end, the inductance L5 other end connects capacitor C93's
One end, left channel audio signal output end of the other end of capacitor C93 as Acquisition Circuit；4 other end of inductance connects capacitor C93
One end, right channel audio signal output end of the other end of capacitor C83 as Acquisition Circuit.
In the present embodiment, as shown in Figure 2 e, the decoding unit in network microphone work station structure and coding unit can be with
The master control list that coded portion and decoded portion by VS1053 codec chip are respectively corresponded to realize, in network microphone work station
Member can use MCU, and chip STM32F407VGT6 as shown in Figure 2 a specifically can be used；The data of VS1053 codec chip
The I/O port of input and output pin connection MCU；The left channel audio signal decoded output LEFT of VS1053 codec chip makees
For the left channel audio signal decoded output of decoding unit, for exporting left channel audio signal decoded signal, VS1053 is compiled
Right channel audio signal decoded output of the right channel audio signal decoded output RIGHT of decoding chip as decoding unit
End, for exporting right channel audio signal decoded signal, VS1053 codec chip left channel audio signal coding input end
Left channel audio input terminal of the MCIP/LINE1 as coding unit, VS1053 codec chip right channel audio signal coding are defeated
Enter to hold right audio channel input terminal of the LINE_IN as coding unit.
In the present embodiment, it can select input/output channel for broadcast channel or acquisition channel by relay, such as scheme
Shown in 2b, when the first movable contact of main control unit control relay and the first normally opened stationary contact connection, the second movable contact and second
Normally opened stationary contact connection, input/output channel is broadcast channel at this time, and broadcast system is issued to the audio signal warp of main control unit
It crosses after decoding unit decoding and outside is output to by input/output channel.When the first movable contact of main control unit control relay
It is connected with the first normally opened stationary contact, when the second movable contact and the second normally opened stationary contact connect, input/output channel is acquisition at this time
The audio signal in channel, the input of input/output channel exports after coding unit encodes to main control unit.
As shown in figure 2f, network microphone work station further includes loudspeaker, the left channel audio of decoding unit in the present embodiment
Signal decoded output and right channel audio signal decoded output are connected respectively to the two of loudspeaker by power amplification circuit
A input terminal, amplifying circuit described above can be realized by PAM8302 audio-frequency power amplifier.
The present embodiment network microphone work station further includes touch screen connected to the main control unit and for storing local music
Storage card；Main control unit acquires the audio signal in storage card by Acquisition Circuit, is then sent to broadcast system host computer
Or external speakers are sent to by input/output channel.Network words can be sent to for the catalogue of program request in broadcast system host computer
Cylinder work station and shows that user can send by the program request catalogue on touch screen to broadcast system host computer in touch screen
On-demand request.
In the present embodiment, the local audio signal of storage can be sent to broadcast system or by wide by microphone work station
It broadcasts channel and is sent to external audio equipment and play out, the loudspeaker being arranged in network microphone work station.The present embodiment network words
Cylinder work station can be set to general network microphone work station or fire emergency network microphone work station；Broadcast system can will disappear
The priority of anti-emergency networks microphone work station microphone audio signal collected is set as highest；Receiving fire emergency
When network microphone work station microphone audio signal collected, the corresponding broadcast channel of the control network equipment preferentially plays the audio
Signal.Therefore when there is fire alarm generation, related personnel can artificially play escape etc. by fire emergency network microphone work station
Message.As it can be seen that the microphone work station in the present embodiment integrates multiple functions, have the advantages that powerful.
The present embodiment also discloses a kind of broadcast system, including the above-mentioned microphone work station of the present embodiment.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (10)
1. a kind of microphone work station, including microphone, which is characterized in that it further include main control unit and input/output channel, it is defeated
Enter/output channel includes coding unit, decoding unit and selecting unit, the input terminal of coding unit and the output end of decoding unit
It is separately connected selecting unit, the control terminal of selecting unit connects main control unit, and main control unit controls coding list by selecting unit
The input of member is switched to external or decoding unit output and is switched to outside, configures broadcast channel for input/output channel
Or acquisition channel；The audio input end of microphone connects the coding input end of coding unit by Acquisition Circuit, single by coding
Main control unit is transmitted after primitive encoding.
2. microphone work station according to claim 1, which is characterized in that in input/output channel selecting unit include after
Electric appliance, relay include two groups of contacts, respectively first group of contact and second group of contact, and first group of contact is by the first normally closed stationary contact
Point, the first normally opened stationary contact and the first movable contact composition, second group of contact by the second normally closed stationary contact, the second normally opened stationary contact and
Second movable contact composition；The control terminal of relay connects main control unit, controls the first movable contact connection first by main control unit
Normally closed stationary contact or the first normally opened stationary contact control the second movable contact by main control unit and connect the second normally closed stationary contact or second
Normally opened stationary contact；
The left channel audio signal decoded output of decoding unit is sequentially connected the 7th power amplification circuit and the 8th power amplification
The first normally closed stationary contact or the first normally opened stationary contact are connected after circuit；First normally opened stationary contact or the first normally closed stationary contact connection are poor
Divide the input of amplifying circuit；The decoded right channel audio signal decoded output of decoding unit is sequentially connected the 9th power amplification electricity
The second normally closed stationary contact or the second normally opened stationary contact, the second normally opened stationary contact or second are connected behind road and the tenth power amplification circuit
The input of normally closed stationary contact connection differential amplifier circuit, the input terminal of the output connection coding unit of differential amplifier circuit, passes through
Second normally opened stationary contact or the second normally closed stationary contact input external audio signal；
Input/output channel connects external audio equipment or external sound source by the first movable contact and the second movable contact；
The left channel audio signal input and right channel audio signal input of microphone export respectively after Acquisition Circuit acquires
To the left channel audio signal coding input end and right channel audio signal coding input end of coding unit, compiled by coding unit
Main control unit is transmitted after code.
3. microphone work station according to claim 1, which is characterized in that Acquisition Circuit includes inductance L4, inductance L5, PNP
Triode Q3 and NPN triode Q4；The wherein left channel audio signal input terminal of the one end inductance L5 connection microphone, inductance L4 mono-
The left channel audio signal input terminal of end connection microphone；The inductance L5 other end is connecting electrolytic capacitor E17 just by resistance R34
End, the inductance L4 other end pass through the anode of resistance R35 connection electrolytic capacitor E17, the negativing ending grounding of electrolytic capacitor E17；Electrolysis electricity
The anode for holding E17 passes through the collector of resistance R33 connecting triode Q3, and the emitter of triode Q3 connects DC power supply, three poles
For the base stage of pipe Q3 by resistance R30 connection DC power supply, the base stage of triode Q3 passes through the current collection of resistance R29 connecting triode Q4
Pole, the emitter ground connection of triode Q4, the base stage of triode Q4 pass through resistance R27 connection main control unit, the base stage of triode Q4
It is grounded by resistance R28；Capacitor C30, the connection of the inductance L5 other end are connected between the inductance L5 other end and the inductance L4 other end
One end of capacitor C93, left channel audio signal output end of the other end of capacitor C93 as Acquisition Circuit；4 other end of inductance connects
Connect one end of capacitor C93, right channel audio signal output end of the other end of capacitor C83 as Acquisition Circuit.
4. microphone work station according to claim 1, which is characterized in that further include loudspeaker, the L channel of decoding unit
Audio signal decoding output end and right channel audio signal decoded output are connected respectively to loudspeaker by power amplification circuit
Two input terminals.
5. microphone work station according to claim 1, which is characterized in that further include touch screen connected to the main control unit.
6. microphone work station according to claim 1, which is characterized in that further include the storage for being also used to store local music
Card；Storage card connects main control unit.
7. microphone work station according to claim 1, which is characterized in that further include internet communication module, main control unit
It is linked into internet by internet communication module, is communicated by internet with the host computer in broadcast system.
8. microphone work station according to claim 7, which is characterized in that internet communication module is Ethernet interface mould
Block.
9. microphone work station according to claim 7, which is characterized in that the host computer in broadcast system is cloud service
Device.
10. a kind of broadcast system, which is characterized in that including microphone work station described in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920173883.4U CN209234059U (en) | 2019-01-31 | 2019-01-31 | Microphone work station and broadcast system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920173883.4U CN209234059U (en) | 2019-01-31 | 2019-01-31 | Microphone work station and broadcast system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209234059U true CN209234059U (en) | 2019-08-09 |
Family
ID=67511137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920173883.4U Active CN209234059U (en) | 2019-01-31 | 2019-01-31 | Microphone work station and broadcast system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209234059U (en) |
-
2019
- 2019-01-31 CN CN201920173883.4U patent/CN209234059U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106154860B (en) | A kind of intelligent switch and the smart home system using the intelligent switch | |
| CN208094766U (en) | Intelligent sound box | |
| CN105025304A (en) | IP-network-based digital direct-broadcasting sound console | |
| CN209234059U (en) | Microphone work station and broadcast system | |
| CN204836428U (en) | Live sound console of digit | |
| CN209390022U (en) | Audio-frequency power amplifier and broadcast system | |
| KR20190023569A (en) | Wireless village broadcasting system for disaster broadcasting | |
| CN105847951A (en) | Method and device for play controlling in audio and video playing system | |
| CN109348164A (en) | A kind of self-service guarantee control system of teleconference | |
| CN207218709U (en) | Audio Matrix main frame and Public Address system | |
| CN103326871A (en) | General information broadcasting method based on DTMB transmission platform | |
| CN208316974U (en) | A kind of voice Rouser applied to high power acoustics | |
| CN107948873B (en) | Automatic switching system and method for audio signals | |
| CN214154681U (en) | Smart tree system with voice interaction and remote visual monitoring picture | |
| CN211352203U (en) | Fusion type intelligent home emergency terminal | |
| CN217280035U (en) | Universal audio encoding and decoding device | |
| CN202634633U (en) | Industrial digital intercom alarm connection device | |
| CN213693717U (en) | Wireless public network emergency early warning broadcasting system | |
| CN109714121A (en) | Audio expands device and its working method, broadcast system | |
| CN205942339U (en) | Cross data collection station device | |
| CN109963039A (en) | A kind of method of the wireless voice call system and wireless voice communication of Lora broadband communication | |
| CN218217466U (en) | AVS38K ultra-high definition decoding device supporting Dolby audio decoding | |
| CN213586074U (en) | Video integrated scheduling system | |
| CN110138869A (en) | A kind of the elderly's social interaction server system and method based on technology of Internet of things | |
| CN204408325U (en) | A kind of mobile music receiving system for campus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |