CN206283602U - A kind of conference system and its control main frame, conference device equipment - Google Patents
A kind of conference system and its control main frame, conference device equipment Download PDFInfo
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- CN206283602U CN206283602U CN201621157634.9U CN201621157634U CN206283602U CN 206283602 U CN206283602 U CN 206283602U CN 201621157634 U CN201621157634 U CN 201621157634U CN 206283602 U CN206283602 U CN 206283602U
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Abstract
The utility model belongs to audio, video data processing technology field, there is provided a kind of conference system and its control main frame, conference device equipment.By in conference system, using the control main frame for including audio demultiplexer, audio multiplexers and n mixer and the n conference device equipment including audio collection module, dio Output Modules and audio demultiplexing screening module, the audio signal that will be collected by audio collection module sends to audio demultiplexer the utility model；Audio signal is demultiplexed respectively by audio demultiplexer, mixer and audio multiplexers, multiplexed audio signal is exported after audio mixing and multiplexing process；Multiplexed audio signal is demultiplexed by audio demultiplexing screening module, and demultiplexing downmix audio signal corresponding with the conference device equipment is exported by dio Output Modules, by not including the audio signal that the conference device equipment is collected in the demultiplexing downmix audio signal of each conference device equipment output, so as to avoid the problem of uttering long and high-pitched sounds.
Description
Technical field
The utility model belongs to audio, video data processing technology field, more particularly to a kind of conference system and its control master
Machine, conference device equipment.
Background technology
Conference system (conference system) is the professional audio equipment for conference halls, is capable of achieving meeting hair
Say, discuss, listening to, simultaneous interpretation, the function such as electronic vote.Conference system is by control main frame and multiple conference device equipment groups
Into control main frame is used to be controlled whole conference system, and conference device equipment is used to be sent out for delegate to the meeting/chairman
Speech, discussion etc. are used.
Conference device equipment in existing conference system includes microphone and loudspeaker, as the Mike of conference device equipment
When wind is not switched on, the loudspeaker of conference device equipment plays conference audio signal, and the audio signal includes the meeting of other openings
The microphone audio signal of unit and the line input signal of conference host；When the microphone of conference device equipment is opened
When, the loudspeaker automatic mute of the conference device equipment, to avoid conference device equipment microphone in itself from picking up conference device
The loudspeaker audio signal of equipment itself, produces sound positive feedback, causes the problem uttered long and high-pitched sounds.I.e. existing conference device equipment
Microphone and loudspeaker can not be opened simultaneously, can otherwise there is a problem of uttering long and high-pitched sounds.
In summary, existing conference system can exist when the microphone and loudspeaker of conference device equipment are opened simultaneously
The problem uttered long and high-pitched sounds.
Utility model content
The purpose of this utility model is to provide a kind of conference system, it is intended to solve existing conference system in conference device
The microphone and loudspeaker of equipment can there is a problem of uttering long and high-pitched sounds when opening simultaneously.
The utility model is achieved in that a kind of conference system, including control main frame and n conference device equipment, and n is
Positive integer；The n conference device equipment connects latter conference device according to the second port of previous conference device equipment
The mode of the first port of equipment is connected in series step by step, and first first port of conference device equipment and the control main frame
FPDP connection；The control main frame includes first interface module；The conference device equipment include second interface module,
Audio collection module and dio Output Modules；Characterized in that, the control main frame also includes that main control module, the first audio are demultiplexed
With device, audio multiplexers and n corresponding with the n conference device equipment respectively mixer；
The data transmission terminal of the first interface module is the FPDP of the control main frame, the first interface module
Control end, the input of first audio demultiplexer respectively with the main control module of control end, output end and input
The output end connection of end and the audio multiplexers, first audio demultiplexer includes n output end, each mixer bag
N input is included, i-th (n-1) individual input of mixer is respectively with first audio demultiplexer except the i-th output end
Outside the connection of remaining (n-1) individual output end, i is the positive integer less than or equal to n, the output end of each mixer respectively with institute
State the n input connection of audio multiplexers, the control end of first audio demultiplexer, the control of the audio multiplexers
The control end of end and the mixer is connected with the main control module；
The conference device equipment also includes that audio demultiplexes screening module；
The first data transmission end of the second interface module and the second data transmission terminal are respectively the conference device and set
Standby first port and second port, the input and output end of the second interface module respectively with the audio collection module
Output end and audio demultiplexing screening module input connection, the output end of audio demultiplexing screening module with
The input connection of the dio Output Modules；
The audio signal that the audio collection module will be collected passes sequentially through the second interface module and described first
Interface module is sent to first audio demultiplexer；First audio demultiplexer is demultiplexed the audio signal
With, and pass sequentially through its n output end output n roads demultiplexing audio signal, the n roads demultiplexing audio signal respectively with it is described
N conference device equipment is corresponding；(n-1) road demultiplexing audio signal and the control that the mixer is received
The line signal of main frame carries out audio mixing, and exports downmix audio signal；The audio multiplexers carry out n roads downmix audio signal
Multiplexing, and export multiplexed audio signal；The audio demultiplexing screening module carries out the multiplexed audio signal to demultiplex
Downmix audio signal is demultiplexed to n roads, and demultiplexing downmix audio signal corresponding with the conference device equipment is exported to institute
State dio Output Modules；The dio Output Modules will the demultiplexing downmix audio signal corresponding with the conference device equipment
Exported.
The utility model additionally provides a kind of control main frame of conference system, the n conference device equipment with conference system
In first conference device equipment connection, n is positive integer；The n conference device equipment sets according to previous conference device
The mode that standby second port connects the latter first port of conference device equipment is connected in series step by step, and first meeting list
The first port of element device is connected with the FPDP of the control main frame；The control main frame includes first interface module；Institute
State control main frame also include main control module, the first audio demultiplexer, audio multiplexers and respectively with the n conference device
N corresponding mixer of equipment；
The data transmission terminal of the first interface module is the FPDP of the control main frame, the first interface module
Control end, the input of first audio demultiplexer respectively with the main control module of control end, output end and input
The output end connection of end and the audio multiplexers, first audio demultiplexer includes n output end, each mixer bag
N input is included, i-th (n-1) individual input of mixer is respectively with first audio demultiplexer except the i-th output end
Outside the connection of remaining (n-1) individual output end, i is the positive integer less than or equal to n, the output end of each mixer respectively with institute
State the n input connection of audio multiplexers, the control end of first audio demultiplexer, the control of the audio multiplexers
The control end of end and the mixer is connected with the main control module；
First audio demultiplexer is demultiplexed the audio signal that the conference device equipment is exported, and successively
N roads are exported by its n output end and demultiplex audio signal, the n roads demultiplexing audio signal respectively with the n meeting list
Element device is corresponding；(n-1) road demultiplexing audio signal and the line of the control main frame that the mixer is received
Road signal carries out audio mixing, and exports downmix audio signal；Be multiplexed for n roads downmix audio signal by the audio multiplexers, and
Multiplexed audio signal is exported to the conference device equipment, so that the conference device equipment is carried out to the multiplexed audio signal
Demultiplexing is obtained demultiplexing downmix audio signal, and demultiplexing downmix audio signal corresponding with the conference device equipment is carried out
Output.
The utility model additionally provides a kind of conference device equipment of conference system, the n conference device equipment according to
The second port of previous conference device equipment connects the latter mode of the first port of the conference device equipment company of series connection step by step
Connect, and first first port of conference device equipment is connected with the control main frame of the conference system, n is positive integer；It is described
Conference device equipment includes second interface module, audio collection module and dio Output Modules；The conference device equipment is also wrapped
Include audio demultiplexing screening module；
The first data transmission end of the second interface module and the second data transmission terminal are respectively the conference device and set
Standby first port and second port, the input and output end of the second interface module respectively with the audio collection module
Output end and audio demultiplexing screening module input connection, the output end of audio demultiplexing screening module with
The input connection of the dio Output Modules；
The audio signal that the audio collection module will be collected is sent to the control by the second interface module
Main frame, so that the control main frame is demultiplexed to the audio signal, exports multiplexing audio letter after audio mixing and multiplexing process
Number；The multiplexed audio signal demultiplex and obtains n roads demultiplexing remixed audio letter by the audio demultiplexing screening module
Number, and demultiplexing downmix audio signal corresponding with the conference device equipment is exported to the dio Output Modules, wherein, with
The audio collection module institute of the conference device equipment is not included in the corresponding demultiplexing downmix audio signal of the conference device equipment
The audio signal for collecting；The dio Output Modules will the demultiplexing remixed audio letter corresponding with the conference device equipment
Number exported.
The utility model is by individual mixed using the first audio demultiplexer, audio multiplexers and n is included in conference system
The control main frame of sound device and the n meeting list including audio collection module, dio Output Modules and audio demultiplexing screening module
Element device, the audio signal that will be collected by audio collection module is sent to the first audio demultiplexer；Demultiplexed by the first audio
Audio signal is demultiplexed respectively with device, mixer and audio multiplexers, multiplexing audio is exported after audio mixing and multiplexing process
Signal；Multiplexed audio signal demultiplex by audio demultiplexing screening module and obtains n roads demultiplexing downmix audio signal, and
Demultiplexing downmix audio signal corresponding with the conference device equipment is exported by dio Output Modules, due to each meeting list
The audio signal that the conference device equipment is collected is not included in the demultiplexing downmix audio signal of element device output, so as to keep away
The data acquisition module and data outputting module for having exempted from conference device problem of uttering long and high-pitched sounds existing when opening simultaneously.
Brief description of the drawings
Fig. 1 is the modular structure schematic diagram of the conference system that the utility model embodiment is provided；
Fig. 2 is the electrical block diagram of the conference system that the utility model embodiment is provided；
Fig. 3 is the electrical block diagram of the conference system that another embodiment of the utility model is provided；
Fig. 4 is the electrical block diagram of the control main frame that the utility model embodiment is provided；
Fig. 5 is the electrical block diagram of the conference device equipment that the utility model embodiment is provided；
Fig. 6 is the electrical block diagram of the conference device equipment that another embodiment of the utility model is provided.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain
The utility model, is not used to limit the utility model.
Fig. 1 shows the modular structure of the conference system that the utility model embodiment is provided, and for convenience of description, only shows
The part related to the utility model embodiment, details are as follows：
As shown in figure 1, a kind of conference system, including control main frame 10 and n conference device equipment (X1~Xn), n is for just
Integer；N conference device equipment (X1~Xn) connects latter meeting list according to the second port B of previous conference device equipment
The mode of the first port A of element device is connected in series step by step, and first first port A of conference device equipment X1 leads with control
The FPDP connection of machine 10.
In the utility model embodiment, between each conference device equipment (X1~Xn) or conference device equipment with
Can be connected by six conductor cable between control main frame 10, it is also possible to be attached by other means, with specific reference to actual feelings
Condition is configured, and is not limited herein.
Fig. 2 shows the circuit structure of the conference system that the utility model embodiment is provided, and for convenience of description, only shows
The part related to the utility model embodiment, details are as follows：
As shown in Fig. 2 control main frame 10 is in addition to including first interface module 20, also including main control module 30, the first sound
Frequency demultiplexer 40, audio multiplexers 50 and n corresponding with n conference device equipment (X1~Xn) respectively mixer
(Y1~Yn).I.e. first mixer Y1 is corresponding with first conference device equipment X1, second mixer Y2 and second
X2 is corresponding for conference device equipment, and n-th mixer is corresponding with n-th conference device equipment.
The data transmission terminal of first interface module 20 is the FPDP of control main frame 10, the control of first interface module 20
End, output end and input control end respectively with main control module 30, the input of the first audio demultiplexer 40 and audio are multiple
Connected with the output end of device 50, the first audio demultiplexer 40 includes n output end (a1~an), each mixer (Y1~Yn)
Including n input (b1~bn), i-th (n-1) individual input of mixer Yi is removed with the first audio demultiplexer 40 respectively
Remaining (n-1) individual output end connection outside i-th output end ai, i is the positive integer less than or equal to n, each mixer (Y1
~Yn) output end be connected with the n input (c1~cn) of audio multiplexers 50 respectively, the control of the first audio demultiplexer 40
The control end at end processed, the control end of audio multiplexers 50 and mixer (Y1~Yn) is connected with main control module 30.
I-th (n-1) individual input of mixer Yi respectively with the first audio demultiplexer 40 except the i-th output end ai it
The individual output end connection of remaining outer (n-1).For example, (n-1) individual input of the 1st mixer Y1 is demultiplexed with the first audio respectively
Remaining (n-1) individual output end connection with device 40 in addition to the first output end a1, i.e. (n-1) of the 1st mixer Y1 is individual defeated
Enter end (such as b2~bn) to be connected with the output end a2~an of the first audio demultiplexer 40 respectively；2nd (n-1) of mixer Y2
Remaining (n-1) the individual output end of individual output end respectively with the first audio demultiplexer 40 in addition to the second output end a2 is connected,
I.e. the 2nd (n-1) individual input of mixer Y2 (such as b1, b3~bn) respectively with the output end of the first audio demultiplexer 40
A1, a3~an connections；N-th (n-1) individual input of mixer Yn is respectively with the first audio demultiplexer 40 except the n-th output
Remaining (n-1) individual output end connection outside an of end, i.e., n-th (n-1) individual input of mixer Yn (such as b1~b (n-1))
It is connected with the output end a1~a (n-1) of the first audio demultiplexer 40 respectively.It should be noted that in control main frame 10 remaining
Mixer it is similar to the above with the annexation of the first demultiplexer 40, here is omitted.
In the utility model embodiment, another input in i-th n input of mixer Yi is led with control
Other audio frequency apparatuses (such as DVD player) connection of the connection of machine 10.
Conference device equipment (X1~Xn) is except including second interface module 80, audio collection module 60 and audio output mould
Outside block 70, also screening module 90 is demultiplexed including audio.
The first data transmission end of second interface module 80 and the second data transmission terminal are respectively the of conference device equipment
Single port A and second port B, the input and output end of second interface module 80 respectively with the output end of audio collection module 60
With the input connection of audio demultiplexing screening module 90, the output end and dio Output Modules of audio demultiplexing screening module 90
70 input connection.
Audio collection module 60 is used to gather audio signal, and the audio signal that audio collection module 60 will be collected is led to successively
Cross second interface module 80 and first interface module 20 is sent to the first audio demultiplexer 40.
When detecting first interface module 20 and having audio signal to be input into, main control module 30 controls the first audio demultiplexer
40th, mixer (Y1~Yn) and audio multiplexers work；First audio demultiplexer 40 is demultiplexed audio signal, and
Pass sequentially through its n output end output n roads demultiplexing audio signal, wherein, n roads demultiplexings audio signal respectively with n meeting
Unit is corresponding, i.e. the demultiplexing audio signal of the first output end a1 of the first audio demultiplexer 40 output with the 1st
Conference device equipment is corresponding, the demultiplexing audio signal and the 2nd of the second output end a2 outputs of the first audio demultiplexer 40
Individual conference device equipment is corresponding, the demultiplexing audio signal and n-th of the n-th output end an outputs of the first audio demultiplexer 40
Individual conference device equipment is corresponding；That is, the demultiplexing sound of the first output end a1 outputs of the first audio demultiplexer 40
Frequency signal is the audio signal that is collected of audio collection module 60 of the 1st conference device equipment X1, the first audio demultiplexing
The demultiplexing audio signal of the second output end a2 outputs of device 40 is the 2nd institute of audio collection module 60 of conference device equipment X1
The audio signal for collecting, the demultiplexing audio signal of the n-th output end an outputs of the first audio demultiplexer 40 is n-th meeting
The audio signal that the audio collection module 60 of view unit X1 is collected.
(n-1) road demultiplexing audio signal and the circuit letter of control main frame 10 that mixer (Y1~Yn) is received
Number audio mixing is carried out, and export downmix audio signal.Wherein, the line signal of control main frame 10 is most connected with control main frame 10
The audio signal of other audio frequency apparatuses output.
For example, (n-1) road signal that the 1st mixer Y1 is received is except the 1st conference device equipment X1 is corresponding
Remaining (n-1) individual each self-corresponding audio signal of conference device equipment (X2~Xn) outside audio signal, the 1st mixer will
Each self-corresponding audio signal of conference device equipment (X2~Xn) carries out audio mixing；(n-1) road letter that 2nd mixer Y2 is received
Number it is remaining (n-1) individual conference device equipment (X1, the X3 in addition to the corresponding audio signal of the 2nd conference device equipment X2
~Xn) each self-corresponding audio signal, the 2nd mixer is by each self-corresponding audio letter of meeting unit (X1, X3~Xn)
Number carry out audio mixing；(n-1) road signal that n-th mixer Yn is received is except the corresponding sound of n-th conference device equipment Xn
Remaining (n-1) individual conference device equipment (X1~X (n-1)) each self-corresponding audio signal, n-th mixer outside frequency signal
Meeting unit (X1~X (n-1)) each self-corresponding audio signal is carried out into audio mixing.It should be noted that except above-mentioned mixed
The operation principle of remaining mixer outside sound device is similar to the above, and here is omitted.
As it appears from the above, each mixer respectively exports downmix audio signal all the way, n mixer (Y1~Yn) exports n roads altogether
Downmix audio signal.
Be multiplexed for n roads downmix audio signal by audio multiplexers 50, and exports multiplexed audio signal to first interface mould
Block 20, first interface module 20 exports to second interface module 80 multiplexed audio signal, and second interface module 80 will be multiplexed sound
Frequency signal output to audio demultiplexes screening module 90.
Multiplexed audio signal demultiplex and obtains n roads demultiplexing remixed audio letter by audio demultiplexing screening module 90
Number, and demultiplexing downmix audio signal corresponding with the conference device equipment is exported to dio Output Modules 70.
Wherein, demultiplexing downmix audio signal in n roads is respectively the downmix audio signal of n mixer (Y1~Yn) output.
The audio demultiplexing screening module 90 of each conference device equipment (X1~Xn) will demultiplexing corresponding with the conference device equipment
Remixed audio is screened, and the corresponding demultiplexing downmix audio signal of the conference device equipment is exported to dio Output Modules
70.For example, the audio demultiplexing screening module 90 of the 1st conference device equipment X1 will solution corresponding with the 1st conference device X1
Multiplexing downmix audio signal (i.e. the 1st downmix audio signal of mixer Y1 outputs) is screened, and will be with the 1st meeting list
The corresponding downmix audio signals that demultiplex of first X1 are exported to dio Output Modules 70；The 2nd audio solution of conference device equipment X2
Multiplexing screening module 90 will demultiplexing downmix audio signal corresponding with the 2nd conference device X2 (i.e. the 2nd mixer Y2 is exported
Downmix audio signal) screened, and demultiplexing downmix audio signal corresponding with the 2nd conference device X2 is exported to sound
Frequency output module 70；The audio demultiplexing screening module 90 of n-th conference device equipment Xn will be corresponding with n-th conference device Xn
The demultiplexing downmix audio signal downmix audio signal of output (i.e. n-th mixer Yn) screened, and will be with n-th meeting
The corresponding demultiplexing downmix audio signals of view unit Xn are exported to dio Output Modules 70.
Dio Output Modules 70 are exported demultiplexing downmix audio signal corresponding with the conference device equipment.Due to
The audio letter that the conference device equipment is collected is not included in the audio signal of each conference device equipment (X1~Xn) output
Number, uttering long and high-pitched sounds for existing when being opened so as to the audio collection module and dio Output Modules that avoid conference device equipment simultaneously is asked
Topic.
In the utility model embodiment, first interface module 20 and second interface module 80 can be connect using existing
Mouth circuit, for example, first interface module 20 and second interface module 80 can use six conductor cable interface circuit, with specific reference to
Connecting line between conference device equipment (X1~Xn) or the connecting line determination between conference device equipment and control main frame 10,
It is not limited herein.
In the utility model embodiment, the audio signal of each conference device equipment (X1~Xn) output is by same
Bar six conductor cable is transmitted to control main frame 10, that is to say, that the sound that the first interface module 20 in control main frame 10 is received
Frequency signal is the audio signal after the n roads audio signal multiplexing to the output of each conference device equipment (X1~Xn), therefore, the
The n roads audio signal obtained after audio signal that one audio demultiplexer 40 is received demultiplexing respectively with n meeting list
Element device (X1~Xn) is corresponding.
In the utility model embodiment, the audio signal that six conductor cable is transmitted every time actually only includes a meeting list
The corresponding audio signal of element device, i.e., n each self-corresponding audio signal of conference device equipment (X1~Xn) is using same
Use what time-multiplexed mode was transmitted when cable is transmitted.
In the utility model embodiment, main control module 30 can use existing microprocessor, and the tool of microprocessor
Build number can be configured according to the actual requirements, not be limited herein.
In the utility model embodiment, the first audio demultiplexer 40 can use existing demultiplexer, that is, demultiplex
The multiple signals included in input signal all the way are decomposed with device, and is exported by multiple output ends, specifically can be with
It is configured according to actual conditions, is not limited herein.
In the utility model embodiment, mixer (Y1~Yn) can use existing mixer, with specific reference to reality
Situation is configured, and is not limited herein.
In the utility model embodiment, audio multiplexers can use existing multiplexer, with specific reference to actual conditions
It is configured, is not limited herein.
In the utility model embodiment, audio collection module 60 can be microphone；Dio Output Modules 70 can be
Loudspeaker, or can be earphone, it is determined with specific reference to actual conditions, it is not limited herein.
Fig. 3 shows the circuit structure of the conference system that another embodiment of the utility model is provided, for convenience of description, only
The part related to the utility model embodiment is shown, details are as follows：
As shown in figure 3, used as the embodiment of the utility model one, audio demultiplexing screening module 90 is demultiplexed including the second audio
With device 901 and signal screening device 902.
Wherein, the input of the second audio demultiplexer 901 is the input that audio demultiplexes screening module 90, the second sound
The output end of frequency demultiplexer 901 is connected with the input of signal screening device 902, and the output end of signal screening device 902 is audio
Demultiplex the output end of screening module 90.
Multiplexed audio signal demultiplex and obtains n roads demultiplexing downmix audio signal by the second audio demultiplexer 901,
N roads demultiplexing downmix audio signal is corresponding with n mixer (Y1~Yn) respectively, and the second audio demultiplexer 901 solves n roads
Multiplexing downmix audio signal is exported to signal screening device 902, and signal screening device 902 is sieved from the demultiplexing downmix audio signal of n roads
Choosing demultiplexing downmix audio signal corresponding with the conference device equipment, and demultiplexing corresponding with the conference device equipment is mixed
Sound audio signal is exported to dio Output Modules 70.
Specifically, whether signal screening device 902 can be by judging included in every road demultiplexing downmix audio signal respectively
There is the corresponding audio signal of conference device equipment to carry out pair demultiplexing downmix audio signal corresponding with the conference device equipment to enter
Row screening, if not comprising the corresponding audio signal of conference device equipment (i.e. conference device in demultiplexing downmix audio signal
The audio signal that the audio collection module of equipment is collected), it is determined that the demultiplexing downmix audio signal is and the conference device
The demultiplexing downmix audio signal is exported defeated to audio by the corresponding demultiplexing downmix audio signal of equipment, signal screening device 902
Go out module 70.
In the utility model embodiment, the second audio demultiplexer 901 can also use existing demultiplexer, specifically
It is determined according to actual conditions, is not limited herein.
In the utility model embodiment, signal screening device 902 can be realized using single-chip microcomputer, industrial computer etc., specific root
It is configured according to actual conditions, is not limited herein.
In actual applications, conference device equipment (X1~Xn) also includes microcontroller (not shown), microcontroller
For being controlled to the modules in conference device equipment (X1~Xn).
Used as the embodiment of the utility model one, control main frame 10 also includes control panel, memory and power module (in figure
It is not shown).
Wherein, control panel, memory and power module are connected with main control module.
In the utility model embodiment, control panel is used to provide the user the interface interacted with control main frame,
I.e. user can be controlled by control panel to control main frame.
It is understood that power module is also multiple with the first audio demultiplexer 40, n mixer (Y1~Yn) and audio
Connected with device 50, for being main control module 30, the first audio demultiplexer 40, n mixer (Y1~Yn) and audio multiplexers
50 power supplies.
In the utility model embodiment, memory can be read-only storage (ROM, read-only memory),
Can be random access memory (RAM, Random Access Memory), or can be other kinds of memory, tool
Body is configured according to actual conditions, is not limited herein.
The utility model embodiment additionally provides a kind of control main frame of conference device, and Fig. 4 shows the utility model reality
The circuit structure of the control main frame of example offer is provided, for convenience of description, the portion related to the utility model embodiment is illustrate only
Point, details are as follows：
As shown in figure 4, a kind of control main frame 10 of conference system, with n conference device equipment of conference system (X1~
Xn the first conference device equipment X1 connections in), n is positive integer；N conference device equipment (X1~Xn) is according to previous meeting
The mode that the second port B of view unit connects the latter first port A of conference device equipment is connected in series step by step, and the
The first port A of one conference device equipment X1 is connected with the FPDP of control main frame 10.
Control main frame 10 also includes main control module 30, the first audio demultiplexer in addition to including first interface module 20
40th, audio multiplexers 50 and n mixer (Y1~Yn) corresponding with n conference device equipment (X1~Xn) respectively.I.e.
First mixer Y1 is corresponding with first conference device equipment X1, second mixer Y2 and second conference device equipment
X2 is corresponding, and n-th mixer is corresponding with n-th conference device equipment.
The data transmission terminal of first interface module 20 is the FPDP of control main frame 10, the control of first interface module 20
End, the second output end and input control end, the input and sound of the first audio demultiplexer 40 respectively with main control module 30
The output end connection of frequency multiplexer 50, the first audio demultiplexer 40 includes n output end (a1~an), each mixer (Y1
~Yn) include n input (b1~bn), i-th (n-1) individual input of mixer Yi respectively with the first audio demultiplexer
The individual output end connections of 40 remaining (n-1) in addition to the i-th output end ai, i is the positive integer less than or equal to n, each audio mixing
The output end of device (Y1~Yn) is connected with the n input (c1~cn) of audio multiplexers 50 respectively, the first audio demultiplexer
The control end of 40 control end, the control end of audio multiplexers 50 and mixer (Y1~Yn) is connected with main control module 30.
I-th (n-1) individual input of mixer Yi respectively with the first audio demultiplexer 40 except the i-th output end ai it
The individual output end connection of remaining outer (n-1).For example, (n-1) individual input of the 1st mixer Y1 is demultiplexed with the first audio respectively
Remaining (n-1) individual output end connection with device 40 in addition to the first output end a1, i.e. (n-1) of the 1st mixer Y1 is individual defeated
Enter end (such as b2~bn) to be connected with the output end a2~an of the first audio demultiplexer 40 respectively；2nd (n-1) of mixer Y2
Remaining (n-1) the individual output end of individual output end respectively with the first audio demultiplexer 40 in addition to the second output end a2 is connected,
I.e. the 2nd (n-1) individual input of mixer Y2 (such as b1, b3~bn) respectively with the output end of the first audio demultiplexer 40
A1, a3~an connections；N-th (n-1) individual input of mixer Yn is respectively with the first audio demultiplexer 40 except the n-th output
Remaining (n-1) individual output end connection outside an of end, i.e., n-th (n-1) individual input of mixer Yn (such as b1~b (n-1))
It is connected with the output end a1~a (n-1) of the first audio demultiplexer 40 respectively.It should be noted that in control main frame 10 remaining
Mixer it is similar to the above with the annexation of the first multiplexer 40, here is omitted.
Another input in i-th n input of mixer Yi in the utility model embodiment is led with control
Other audio frequency apparatuses (such as DVD player) connection of the connection of machine 10.
In the utility model embodiment, each conference device equipment (X1~Xn) includes audio collection module and audio
Output module, audio collection module is used to gather audio, and the audio output that will be collected to first interface module 20, and audio connects
Receiving module is used to be exported the audio signal that meeting unit is received.
In the utility model embodiment, there is sound when the main control module 30 of control main frame 10 detects first interface module 20
During frequency signal input, main control module 30 control the first audio demultiplexer 40, mixer (Y1~Yn) and audio multiplexers work
Make；First audio demultiplexer 40 is demultiplexed audio signal, and passes sequentially through its n output end output n roads demultiplexing
Audio signal, wherein, n roads demultiplexing audio signal is corresponding with n conference device equipment respectively, i.e. the first audio demultiplexer
The demultiplexing audio signal of 40 the first output end a1 outputs is corresponding with the 1st conference device equipment, the first audio demultiplexing
The demultiplexing audio signal of the second output end a2 outputs of device 40 is corresponding with the 2nd conference device equipment, and the first audio is demultiplexed
The demultiplexing audio signal exported with the n-th output end an of device 40 is corresponding with n-th conference device equipment；That is, the
The demultiplexing audio signal of the first output end a1 outputs of one audio demultiplexer 40 is the 1st audio of conference device equipment X1
The audio signal that acquisition module 60 is collected, the demultiplexing audio of the second output end a2 outputs of the first audio demultiplexer 40
Signal is the audio signal that is collected of audio collection module 60 of the 2nd conference device equipment X1, the first audio demultiplexer
The demultiplexing audio signal of 40 the n-th output end an outputs is that the audio collection module 60 of n-th conference device equipment X1 is adopted
The audio signal for collecting.
(n-1) road demultiplexing audio signal and the circuit letter of control main frame 10 that mixer (Y1~Yn) is received
Number audio mixing is carried out, and export downmix audio signal.Wherein, the line signal of control main frame 10 is most connected with control main frame 10
The audio signal of other audio frequency apparatuses output.
For example, (n-1) road signal that the 1st mixer Y1 is received is except the 1st conference device equipment X1 is corresponding
Remaining (n-1) individual each self-corresponding audio signal of conference device equipment (X2~Xn) outside audio signal, the 1st mixer will
Each self-corresponding audio signal of conference device equipment (X2~Xn) carries out audio mixing；(n-1) road letter that 2nd mixer Y2 is received
Number it is remaining (n-1) individual conference device equipment (X1, the X3 in addition to the corresponding audio signal of the 2nd conference device equipment X2
~Xn) each self-corresponding audio signal, the 2nd mixer is by each self-corresponding audio letter of meeting unit (X1, X3~Xn)
Number carry out audio mixing；(n-1) road signal that n-th mixer Yn is received is except the corresponding sound of n-th conference device equipment Xn
Remaining (n-1) individual conference device equipment (X1~X (n-1)) each self-corresponding audio signal, n-th mixer outside frequency signal
Meeting unit (X1~X (n-1)) each self-corresponding audio signal is carried out into audio mixing.It should be noted that except above-mentioned mixed
The operation principle of remaining mixer outside sound device is similar to the above, and here is omitted.
As it appears from the above, each mixer respectively exports downmix audio signal all the way, n mixer (Y1~Yn) exports n roads altogether
Downmix audio signal.
Be multiplexed for n roads downmix audio signal by audio multiplexers 50, and exports multiplexed audio signal to first interface mould
Block 20, first interface module 20 exports to second interface module 80 multiplexed audio signal, and second interface module 80 will be multiplexed sound
Frequency signal output is to conference device equipment (X1~Xn), so that conference device equipment (X1~Xn) is solved to multiplexed audio signal
Multiplexing obtain demultiplex downmix audio signal, and will it is corresponding with the conference device equipment demultiplexing downmix audio signal carry out it is defeated
Go out.
In the utility model embodiment, first interface module 20 can use existing interface circuit, for example, first connects
Mouth mold block 20 can use six conductor cable interface circuit, with specific reference to the connecting line between conference device equipment (X1~Xn) or
Connecting line between conference device equipment and control main frame 10 determines, is not limited herein.
In the utility model embodiment, the audio signal of each conference device equipment (X1~Xn) output is by same
Bar six conductor cable is transmitted to control main frame 10, that is to say, that the sound that the first interface module 20 in control main frame 10 is received
Frequency signal is the audio signal after the n roads audio signal multiplexing to the output of each conference device equipment (X1~Xn), therefore, the
The n roads audio signal obtained after audio signal that one audio demultiplexer 40 is received demultiplexing respectively with n meeting list
Element device (X1~Xn) is corresponding.
In the utility model embodiment, the audio signal that six conductor cable is transmitted every time actually only includes a meeting list
The corresponding audio signal of element device, i.e., n each self-corresponding audio signal of conference device equipment (X1~Xn) is using same
Use what time-multiplexed mode was transmitted when cable is transmitted.
In the utility model embodiment, main control module 30 can use existing microprocessor, and the tool of microprocessor
Build number can be configured according to the actual requirements, not be limited herein.
In the utility model embodiment, the first audio demultiplexer 40 can use existing demultiplexer, that is, demultiplex
The multiple signals included in input signal all the way are decomposed with device, and is exported by multiple output ends, specifically can be with
It is configured according to actual conditions, is not limited herein.
In the utility model embodiment, mixer (Y1~Yn) can use existing mixer, with specific reference to reality
Situation is configured, and is not limited herein.
In the utility model embodiment, audio multiplexers can use existing multiplexer, with specific reference to actual conditions
It is configured, is not limited herein.
Used as the embodiment of the utility model one, control main frame 10 also includes control panel, memory and power module (in figure
It is not shown).
Wherein, control panel, memory and power module are connected with main control module.
In the utility model embodiment, control panel is used to provide the user the interface interacted with control main frame,
I.e. user can be controlled by control panel to control main frame.
It is understood that power module is also multiple with the first audio demultiplexer 40, n mixer (Y1~Yn) and audio
Connected with device 50, for being main control module 30, the first audio demultiplexer 40, n mixer (Y1~Yn) and audio multiplexers
50 power supplies.
In the utility model embodiment, memory can be read-only storage (ROM, read-only memory),
Can be random access memory (RAM, Random Access Memory), or can be other kinds of memory, tool
Body is configured according to actual conditions, is not limited herein
The utility model embodiment additionally provides a kind of conference device equipment of conference system, and Fig. 5 shows that this practicality is new
The circuit structure of the conference device equipment that type embodiment is provided, for convenience of description, illustrate only and the utility model embodiment
Related part, details are as follows：
Refering to Fig. 1 and Fig. 5, a kind of conference device equipment of conference system, n conference device equipment (X1~Xn) is according to preceding
The second port B of one conference device equipment connects the latter mode of the first port A of the conference device equipment company of series connection step by step
Connect, and first first port A of conference device equipment X1 is connected with the control main frame 10 of conference system, n is positive integer.
In the utility model embodiment, between each conference device equipment (X1~Xn) or conference device equipment with
Can be connected by six conductor cable between control main frame 10, it is also possible to be attached by other means, with specific reference to actual feelings
Condition is configured, and is not limited herein.
As shown in figure 5, conference device equipment (X1~Xn) except including second interface module 80, audio collection module 60 and
Outside dio Output Modules 70, also screening module 90 is demultiplexed including audio.
The first data transmission end of second interface module 80 and the second data transmission terminal are respectively the of conference device equipment
Single port A and second port B, the input and output end of second interface module 80 respectively with the output end of audio collection module 60
With the input connection of audio demultiplexing screening module 90, the output end and dio Output Modules of audio demultiplexing screening module 90
70 input connection.
Audio collection module 60 is used to gather audio signal, and the audio signal that audio collection module 60 will be collected is led to successively
Cross second interface module 80 and first interface module 20 sends control main frame 10, so that control main frame 10 is solved to audio signal
Multiplexed audio signal is exported after multiplexing, audio mixing and multiplexing process；Audio demultiplexing screening module 90 carries out multiplexed audio signal
Demultiplexing obtains n roads demultiplexing downmix audio signal, and will demultiplexing downmix audio signal corresponding with the conference device equipment
Export to dio Output Modules 70, wherein, not including in demultiplexing downmix audio signal corresponding with the conference device equipment should
The audio signal that the audio collection module 60 of conference device equipment is collected；Dio Output Modules 70 will set with the conference device
Standby corresponding demultiplexing downmix audio signal is exported.
In the utility model embodiment, second interface module 80 can use existing interface circuit, for example, second connects
Mouth mold block 80 can use six conductor cable interface circuit, with specific reference to the connecting line between conference device equipment (X1~Xn) or
Connecting line between person's conference device equipment and control main frame 10 determines, is not limited herein.
In the utility model embodiment, the audio signal of each conference device equipment (X1~Xn) output is by same
Bar six conductor cable is transmitted to control main frame 10, that is to say, that the sound that the first interface module 20 in control main frame 10 is received
Frequency signal is the audio signal after the n roads audio signal multiplexing to the output of each conference device equipment (X1~Xn).
In the utility model embodiment, the audio signal that six conductor cable is transmitted every time actually only includes a meeting list
The corresponding audio signal of element device, i.e., n each self-corresponding audio signal of conference device equipment (X1~Xn) is using same
Use what time-multiplexed mode was transmitted when cable is transmitted.
In the utility model embodiment, audio collection module 60 can be microphone；Dio Output Modules 70 can be
Loudspeaker, or can be earphone, it is determined with specific reference to actual conditions, it is not limited herein.
Fig. 6 shows the circuit structure of the conference device equipment that another embodiment of the utility model is provided, for the ease of saying
It is bright, the part related to the utility model embodiment is illustrate only, details are as follows：
As shown in fig. 6, used as the embodiment of the utility model one, audio demultiplexing screening module 90 is demultiplexed including the second audio
With device 901 and signal screening device 902.
Wherein, the input of the second audio demultiplexer 901 is the input that audio demultiplexes screening module 90, the second sound
The output end of frequency demultiplexer 901 is connected with the input of signal screening device 902, and the output end of signal screening device 902 is audio
Demultiplex the output end of screening module 90.
Multiplexed audio signal demultiplex and obtains n roads demultiplexing downmix audio signal by the second audio demultiplexer 901,
N roads demultiplexing downmix audio signal is corresponding with n mixer (Y1~Yn) respectively, and the second audio demultiplexer 901 solves n roads
Multiplexing downmix audio signal is exported to signal screening device 902, and signal screening device 902 is sieved from the demultiplexing downmix audio signal of n roads
Choosing demultiplexing downmix audio signal corresponding with the conference device equipment, and demultiplexing corresponding with the conference device equipment is mixed
Sound audio signal is exported to dio Output Modules 70.
Specifically, whether signal screening device 902 can be by judging included in every road demultiplexing downmix audio signal respectively
There is the corresponding audio signal of conference device equipment to carry out pair demultiplexing downmix audio signal corresponding with the conference device equipment to enter
Row screening, if not comprising the corresponding audio signal of conference device equipment (i.e. conference device in demultiplexing downmix audio signal
The audio signal that the audio collection module of equipment is collected), it is determined that the demultiplexing downmix audio signal is and the conference device
The demultiplexing downmix audio signal is exported defeated to audio by the corresponding demultiplexing downmix audio signal of equipment, signal screening device 902
Go out module 70.
In the utility model embodiment, the second audio demultiplexer 901 can also use existing demultiplexer, specifically
It is determined according to actual conditions, is not limited herein.
In the utility model embodiment, signal screening device 902 can be realized using single-chip microcomputer, industrial computer etc., specific root
It is configured according to actual conditions, is not limited herein.
In actual applications, conference device equipment (X1~Xn) also includes microcontroller (not shown), microcontroller
For being controlled to the modules in conference device equipment (X1~Xn).
The utility model embodiment by conference system using include the first audio demultiplexer, audio multiplexers and
The control main frame of n mixer and n meeting of screening module is demultiplexed including audio collection module, dio Output Modules and audio
View unit, the audio signal that will be collected by audio collection module is sent to the first audio demultiplexer；By the first audio
Demultiplexer, mixer and audio multiplexers are demultiplexed to audio signal respectively, export multiplexing after audio mixing and multiplexing process
Audio signal；Multiplexed audio signal demultiplex by audio demultiplexing screening module and obtains n roads demultiplexing remixed audio letter
Number, and demultiplexing downmix audio signal corresponding with the conference device equipment is exported by dio Output Modules, due to each
Do not include the audio signal that the conference device equipment is collected in the demultiplexing downmix audio signal of conference device equipment output,
The problem of uttering long and high-pitched sounds existed when being opened so as to the data acquisition module and data outputting module that avoid conference device simultaneously.
Preferred embodiment of the present utility model is these are only, is not used to limit the utility model, it is all in this practicality
Any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (9)
1. a kind of conference system, including control main frame and n conference device equipment, n is positive integer；The n conference device sets
The standby second port according to previous conference device equipment connects the latter mode of the first port of conference device equipment step by step
It is connected in series, and first first port of conference device equipment is connected with the FPDP of the control main frame；The control
Main frame includes first interface module；The conference device equipment includes second interface module, audio collection module and audio output
Module；Characterized in that, the control main frame also includes main control module, the first audio demultiplexer, audio multiplexers and divides
N not corresponding with n conference device equipment mixer；
The data transmission terminal of the first interface module is the FPDP of the control main frame, the control of the first interface module
End processed, output end and input control end respectively with the main control module, the input of first audio demultiplexer and
The output end connection of the audio multiplexers, first audio demultiplexer includes n output end, and each mixer includes n
Individual input, i-th (n-1) individual input of mixer respectively with first audio demultiplexer except the i-th output end it
The connection of remaining outer (n-1) individual output end, i is the positive integer less than or equal to n, the output end of each mixer respectively with it is described
The n input connection of audio multiplexers, the control end of first audio demultiplexer, the control end of the audio multiplexers
And the control end of the mixer is connected with the main control module；
The conference device equipment also includes that audio demultiplexes screening module；
The first data transmission end of the second interface module and the second data transmission terminal are respectively the conference device equipment
First port and second port, the input and output end of the second interface module are defeated with the audio collection module respectively
Go out the input connection of end and audio demultiplexing screening module, the output end of audio demultiplexing screening module with it is described
The input connection of dio Output Modules；
The audio signal that the audio collection module will be collected passes sequentially through the second interface module and the first interface
Module is sent to first audio demultiplexer；First audio demultiplexer is demultiplexed the audio signal,
And its n output end output n roads demultiplexing audio signal is passed sequentially through, the n roads demultiplexing audio signal is individual with the n respectively
Conference device equipment is corresponding；(n-1) road demultiplexing audio signal and the control master that the mixer is received
The line signal of machine carries out audio mixing, and exports downmix audio signal；The audio multiplexers are answered n roads downmix audio signal
With, and export multiplexed audio signal；The multiplexed audio signal demultiplex obtaining n by the audio demultiplexing screening module
Road demultiplexes downmix audio signal, and demultiplexing downmix audio signal corresponding with the conference device equipment is exported to the sound
Frequency output module；The dio Output Modules carry out the demultiplexing downmix audio signal corresponding with the conference device equipment
Output.
2. conference system as claimed in claim 1, it is characterised in that the audio collection module is microphone, the audio
Output module is loudspeaker.
3. conference system as claimed in claim 1, it is characterised in that the audio demultiplexing screening module includes the second audio
Demultiplexer and signal screening device；
The input of second audio demultiplexer is the input that the audio demultiplexes screening module, second audio
The output end of demultiplexer is connected with the input of the signal screening device, and the output end of the signal screening device is the audio
Demultiplex the output end of screening module；
Second audio demultiplexer is demultiplexed the multiplexed audio signal, and exports n roads demultiplexing remixed audio
Signal；Conference device equipment is corresponding demultiplexes with this from the screening of n roads demultiplexing downmix audio signals for the signal screening device
With downmix audio signal, and the demultiplexing downmix audio signal corresponding with the conference device equipment is exported to the audio
Output module.
4. conference system as claimed in claim 1, it is characterised in that the control main frame also includes control panel, memory
And power module；
The control panel, the memory and the power module are connected with the main control module.
5. first conference device in a kind of control main frame of conference system, with n conference device equipment of conference system sets
Standby connection, n is positive integer；The n conference device equipment is latter according to the second port connection of previous conference device equipment
The mode of the first port of individual conference device equipment is connected in series step by step, and first conference device equipment first port and institute
State the FPDP connection of control main frame；The control main frame includes first interface module, it is characterised in that the control main frame
Also include main control module, the first audio demultiplexer, audio multiplexers and corresponding with the n conference device equipment respectively
N mixer；
The data transmission terminal of the first interface module is the FPDP of the control main frame, the control of the first interface module
End processed, output end and input control end respectively with the main control module, the input of first audio demultiplexer and
The output end connection of the audio multiplexers, first audio demultiplexer includes n output end, and each mixer includes n
Individual input, i-th (n-1) individual input of mixer respectively with first audio demultiplexer except the i-th output end it
The connection of remaining outer (n-1) individual output end, i is the positive integer less than or equal to n, the output end of each mixer respectively with it is described
The n input connection of audio multiplexers, the control end of first audio demultiplexer, the control end of the audio multiplexers
And the control end of the mixer is connected with the main control module；
First audio demultiplexer is demultiplexed the audio signal that the conference device equipment is exported, and is passed sequentially through
Its n output end output n roads demultiplexing audio signal, the n roads demultiplexing audio signal sets with the n conference device respectively
It is standby corresponding；(n-1) road demultiplexing audio signal and the circuit letter of the control main frame that the mixer is received
Number audio mixing is carried out, and export downmix audio signal；Be multiplexed for n roads downmix audio signal by the audio multiplexers, and is exported
Multiplexed audio signal is to the conference device equipment, so that the conference device equipment is demultiplexed to the multiplexed audio signal
With obtain demultiplex downmix audio signal, and will it is corresponding with the conference device equipment demultiplexing downmix audio signal carry out it is defeated
Go out.
6. control main frame as claimed in claim 5, it is characterised in that the control main frame also includes control panel, memory
And power module；
The control panel, the memory and the power module are connected with the main control module.
7. the conference device equipment of a kind of conference system, the n conference device equipment is according to previous conference device equipment
The mode that second port connects the latter first port of conference device equipment is connected in series step by step, and first conference device sets
Standby first port is connected with the control main frame of the conference system, and n is positive integer；The conference device equipment connects including second
Mouth mold block, audio collection module and dio Output Modules；Characterized in that, the conference device equipment is also demultiplexed including audio
Screening module；
The first data transmission end of the second interface module and the second data transmission terminal are respectively the conference device equipment
First port and second port, the input and output end of the second interface module are defeated with the audio collection module respectively
Go out the input connection of end and audio demultiplexing screening module, the output end of audio demultiplexing screening module with it is described
The input connection of dio Output Modules；
The audio signal that the audio collection module will be collected is sent to the control main frame by the second interface module,
So that the control main frame is demultiplexed to the audio signal, is exported multiplexed audio signal after audio mixing and multiplexing process；Institute
State audio demultiplexing screening module the multiplexed audio signal demultiplex obtain n roads demultiplexing downmix audio signal, and
Demultiplexing downmix audio signal corresponding with the conference device equipment is exported to the dio Output Modules, wherein, with the meeting
The audio collection module including the conference device equipment is not gathered in the corresponding demultiplexing downmix audio signal of view unit
The audio signal for arriving；The dio Output Modules enter the demultiplexing downmix audio signal corresponding with the conference device equipment
Row output.
8. conference device equipment as claimed in claim 7, it is characterised in that the audio collection module is microphone, described
Dio Output Modules are loudspeaker.
9. conference device equipment as claimed in claim 7, it is characterised in that the audio demultiplexing screening module includes second
Audio demultiplexer and signal screening device；
The input of second audio demultiplexer is the input that the audio demultiplexes screening module, second audio
The output end of demultiplexer is connected with the input of the signal screening device, and the output end of the signal screening device is the audio
Demultiplex the output end of screening module；
Second audio demultiplexer is demultiplexed the multiplexed audio signal, and exports n roads demultiplexing remixed audio
Signal；Conference device equipment is corresponding demultiplexes with this from the screening of n roads demultiplexing downmix audio signals for the signal screening device
With downmix audio signal, and the demultiplexing downmix audio signal corresponding with the conference device equipment is exported to the audio
Output module.
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| CN201621157634.9U CN206283602U (en) | 2016-10-31 | 2016-10-31 | A kind of conference system and its control main frame, conference device equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474604A (en) * | 2018-11-27 | 2019-03-15 | 视联动力信息技术股份有限公司 | A kind of view networking audio stream processing method and system |
| CN110035372A (en) * | 2019-04-24 | 2019-07-19 | 广州视源电子科技股份有限公司 | Output control method and device of sound amplification system, sound amplification system and computer equipment |
-
2016
- 2016-10-31 CN CN201621157634.9U patent/CN206283602U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474604A (en) * | 2018-11-27 | 2019-03-15 | 视联动力信息技术股份有限公司 | A kind of view networking audio stream processing method and system |
| CN110035372A (en) * | 2019-04-24 | 2019-07-19 | 广州视源电子科技股份有限公司 | Output control method and device of sound amplification system, sound amplification system and computer equipment |
| CN110035372B (en) * | 2019-04-24 | 2021-01-26 | 广州视源电子科技股份有限公司 | Output control method and device of sound amplification system, sound amplification system and computer equipment |
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