CN206517589U - A kind of transmitting device for becoming level signal - Google Patents
A kind of transmitting device for becoming level signal Download PDFInfo
- Publication number
- CN206517589U CN206517589U CN201720064910.5U CN201720064910U CN206517589U CN 206517589 U CN206517589 U CN 206517589U CN 201720064910 U CN201720064910 U CN 201720064910U CN 206517589 U CN206517589 U CN 206517589U
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- amplification circuit
- main frame
- level signal
- amplifying circuit
- pins
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Abstract
A kind of transmitting device for becoming level signal, including main frame and conference device in conference system, the main frame include main frame power amplifier module, and the conference device includes DSP modules, wherein：Also include operational amplification circuit, the operational amplification circuit includes positive amplifying circuit and reverse amplification circuit, the positive amplifying circuit includes two-way and turns high ordinary telegram road, it is respectively connected to DSP modules, the two-way turns high ordinary telegram road and includes one-level change level block and two grades of change level blocks respectively, the positive amplifying circuit is placed in conference device, and the reverse amplification circuit is placed in Systematic Main Frame of Meeting, and the positive amplifying circuit is connected by transfer cable wire with reverse amplification circuit.The utility model provides farther Distance Transmission, while improving antijamming capability, it is ensured that the stable transmission of the level signal of transmission, so that hoistphone tonequality, high-fidelity are undamped.
Description
Technical field
The utility model is related to the field of signal transmissions in conference system, particularly a kind of transmission dress for becoming level signal
Put.
Background technology
At present, the middle signal of conference system transmission and control amplification, real-time performance Digital Transmission and control into
For main trend.Because the signal acquisition level of microphone and amplitude, the microphone collection distance of human voice signal have in conference system
Larger association, is deposited even if collecting the sound level signal more suited the requirements level signal being also easily caused in transmitting procedure
In large range of fluctuation, the antijamming capability in transmission range, transmitting procedure with level signal etc. is most important.Therefore,
In the urgent need to a solution, transmission at a distance is provided in level signal transmission and antijamming capability is improved, meeting is lifted
The high-fidelity of microphone tonequality sum in conference system is undamped.
Utility model content
In order to overcome the disadvantages mentioned above of prior art, the purpose of this utility model is to provide to be provided in level signal transmission
Transmit and improve at a distance a kind of transmitting device of change level signal of antijamming capability.
The utility model solves the technical scheme that its technical problem used：A kind of transmitting device for becoming level signal,
Including main frame in conference system and conference device, the main frame includes main frame power amplifier module, and the conference device includes DSP
Module, wherein：Also include operational amplification circuit, the operational amplification circuit includes positive amplifying circuit and reversely amplification electricity
Road, the positive amplifying circuit includes two-way and turns high ordinary telegram road, is respectively connected to DSP modules, and the two-way turns high ordinary telegram road difference
Include one-level and become level block and two grades of change level blocks, the positive amplifying circuit is placed in conference device, described reverse
Amplifying circuit is placed in Systematic Main Frame of Meeting, and the positive amplifying circuit is connected by transfer cable wire with reverse amplification circuit.
It is used as further improvement of the utility model：The DSP modules, which also include in dsp chip, the dsp chip, to be wrapped
A/D modular converters and D/A modular converters are included, the A/D modular converters are connected with input signal end, the D/A modular converters
Two pins, respectively LOUTP pins and LOOUTN pins are led to, the high ordinary telegram road of the two-way turn is respectively connected to LOUTP and drawn
Pin and LOUTN pins.
It is used as further improvement of the utility model：The reverse amplification circuit is connected with main frame power amplifier module by suppressor
Connect.
Compared with prior art, the beneficial effects of the utility model are：
The utility model DSP modules use operational amplification circuit, and using two-stage amplification module, gentle LOW signal turns by
Be high ordinary mail number there is provided more long-distance transmissions, while improving antijamming capability, it is ensured that the stable transmission of the level signal of transmission,
So as to which hoistphone tonequality, high-fidelity are undamped.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is dsp chip electrical block diagram.
Fig. 3 is positive amplification circuit structure schematic diagram.
Fig. 4 is reverse amplification circuit structural representation.
Embodiment
The utility model is further illustrated with embodiment in conjunction with brief description of the drawings：
Referring to figs. 1 to Fig. 4, a kind of transmitting device of change level signal, including main frame and conference device in conference system, institute
State main frame and include main frame power amplifier module, the conference device includes DSP modules, wherein：Also include operational amplification circuit,
The operational amplification circuit includes positive amplifying circuit and reverse amplification circuit, and the positive amplifying circuit includes two-way and turns high
Ordinary telegram road, is respectively connected to DSP modules, and the two-way turns high ordinary telegram road and includes one-level change level block and two grades of change level respectively
Module, the positive amplifying circuit is placed in conference device, and the reverse amplification circuit is placed in Systematic Main Frame of Meeting, it is described just
It is connected to amplifying circuit by transfer cable wire with reverse amplification circuit.
The DSP modules also include in dsp chip, the dsp chip and include A/D modular converters and D/A moduluss of conversion
Block, the A/D modular converters are connected with input signal end, and the D/A modular converters lead to two pins, respectively LOUTP
Pin and LOOUTN pins, turn high ordinary telegram road 17 and turn LOUTP pins and LOUTN that high ordinary telegram road 18 is respectively connected to dsp chip
Pin.The signal that the DSP modules are gathered by input signal end is exported after being handled, and turning high ordinary telegram road by two-way is increased
Benefit control, transmits the main frame power amplifier module into conference system by transfer cable wire, is gone back by reverse operational amplification circuit
Original, using high level signal transmission make transmission range farther, and antijamming capability can it is stronger, hoistphone tonequality, high-fidelity without
Decay.
The reverse amplification circuit is connected with main frame power amplifier module by suppressor.
In summary, one of ordinary skill in the art is read after the utility model file, according to skill of the present utility model
Art scheme and technical concept make other various corresponding conversion schemes without creative mental labour, belong to this practicality new
The scope that type is protected.
Claims (3)
1. a kind of transmitting device for becoming level signal, including main frame and conference device in conference system, the main frame include master
Machine power amplifier module, the conference device includes DSP modules, it is characterized in that：Also include operational amplification circuit, the computing is put
Big circuit includes positive amplifying circuit and reverse amplification circuit, and the positive amplifying circuit includes two-way and turns high ordinary telegram road, point
Not Jie Ru DSP modules, the two-way turn high ordinary telegram road include respectively one-level become level block and two grades change level blocks, it is described
Positive amplifying circuit is placed in conference device, and the reverse amplification circuit is placed in Systematic Main Frame of Meeting, the positive amplification electricity
Road is connected by transfer cable wire with reverse amplification circuit.
2. a kind of transmitting device for becoming level signal according to claim 1, it is characterized in that：The DSP modules also include
Have and include A/D modular converters and D/A modular converters in dsp chip, the dsp chip, the A/D modular converters are believed with input
Number end connection, the D/A modular converters lead to two pins, respectively LOUTP pins and LOOUTN pins, and the two-way turns
High ordinary telegram road is respectively connected to LOUTP pins and LOUTN pins.
3. a kind of transmitting device for becoming level signal according to claim 1, it is characterized in that：The reverse amplification circuit with
Main frame power amplifier module is connected by suppressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720064910.5U CN206517589U (en) | 2017-01-19 | 2017-01-19 | A kind of transmitting device for becoming level signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720064910.5U CN206517589U (en) | 2017-01-19 | 2017-01-19 | A kind of transmitting device for becoming level signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517589U true CN206517589U (en) | 2017-09-22 |
Family
ID=59864900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720064910.5U Active CN206517589U (en) | 2017-01-19 | 2017-01-19 | A kind of transmitting device for becoming level signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206517589U (en) |
-
2017
- 2017-01-19 CN CN201720064910.5U patent/CN206517589U/en active Active
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