CN201869241U - Audio interface of communication equipment - Google Patents
Audio interface of communication equipment Download PDFInfo
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- CN201869241U CN201869241U CN2010205821933U CN201020582193U CN201869241U CN 201869241 U CN201869241 U CN 201869241U CN 2010205821933 U CN2010205821933 U CN 2010205821933U CN 201020582193 U CN201020582193 U CN 201020582193U CN 201869241 U CN201869241 U CN 201869241U
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Abstract
The utility model discloses an audio interface of communication equipment. The audio interface comprises an input terminal and an output terminal, wherein the input terminal is used for receiving audio signals outputted by the communication equipment to an earphone or a telephone receiver thereof, and the output terminal is used for connecting to a microphone interface of the communication equipment; and the input terminal is connected with an external audio output interface via an audio output coupling circuit, and the output terminal is connected with an external audio input interface via an audio input coupling circuit. The audio interface of the communication equipment provided by the utility model has the advantages that the structure is simple and the manufacturing cost is low; the audio interface not only can be connected with a fixed telephone, but also can be cooperatively used with various mobile communication devices such as mobile phones, PASes (Personal Access System) and interphones, can not be limited by application places and can conveniently realize the telephone interaction with off-site spectators when holding outdoor shows or recording radio programs, so that the use is flexible and convenient.
Description
Technical field
The utility model belongs to the acoustics technical field, specifically, relates to a kind of audio interface of communication apparatus with transmit audio signals that be used to plug into.
Background technology
At present, TV station or broadcasting station are when doing the program of some special type, programs such as, hotline request online such as scene performance, television interview, ruling by law, need host and outside the venue spectators or audience to carry out the phone interaction, not only need to allow be in on-the-spot welcome guest or spectators clearly uppick from outside audience's sound, such as problem that proposes or the information that provides etc., also need to allow the outside audience or the audience that throw hot line into can hear on-the-spot feedback simultaneously, even experience on-the-spot atmosphere.
In order to realize this phone interaction function, present TV station or broadcasting station all are to use a kind of telephone coupler of specialty to realize.Use this traditional telephone coupler mainly to have two aspect shortcomings: the one, this telephone coupler telephone of can only plugging into is not suitable for being applied in the environment of outdoor performance, therefore uses very dumb; The 2nd, the structure of this telephone coupler is quite complicated, involves great expense, and therefore is not suitable in small-scale radio station or enterprise's popularization and application.
The utility model content
The utility model provides a kind of communication apparatus audio interface in order to solve existing telephone coupler structure complexity, to use inflexible problem, various types of communication apparatus of not only can plugging into, and also simple in structure, easy to use.
For solving the problems of the technologies described above, technical scheme was achieved under the utility model adopted:
A kind of communication apparatus audio interface, comprise that being used to receive communication apparatus exports the input terminal of audio signal of its earphone or receiver and the lead-out terminal of the microphone interface that is used to be connected communication apparatus to, described input terminal connects external audio output interface by audio frequency output coupling circuit, and described lead-out terminal connects external audio input interface by the audio frequency input coupling circuit.
Preferably, described input terminal and lead-out terminal are arranged in the telephone plug, and the type of described telephone plug and the interface type of communication apparatus are suitable.Promptly when described communication apparatus is mobile communication equipment, the type of described telephone plug should be suitable be used to the to peg graft interface type of earphone on the described mobile communication equipment, such as 3.5mm earphone interface, 2.5mm earphone interface or USB interface, pop-port interface etc.When described communication apparatus was landline telephone, then the type of described telephone plug should be suitable be used to the to peg graft interface type of receiver on the landline telephone, such as the RJ11 interface.
Further, described external audio output interface and external audio input interface can be one or more in the agricultural interface of card, big three core interfaces, little three core interfaces, big two core interfaces and the RCA jack.
Further again, can adopt following three kinds of circuit establishment forms design to realize as described audio frequency output coupling circuit and audio frequency input coupling circuit:
The first comprises coupling capacitance and isolating transformer in described audio frequency output coupling circuit, described input terminal connects the elementary of isolating transformer, the external audio output interface of secondary connection of described isolating transformer by the coupling capacitance of series connection; Comprise another isolating transformer and build-out resistor in described audio frequency input coupling circuit, the external audio input interface of elementary connection of described another isolating transformer after secondary and described build-out resistor is in parallel, is connected to described lead-out terminal.
It two is, in described audio frequency output coupling circuit and audio frequency input coupling circuit, two-way coupling capacitance, two-way voltage attenuation resistance and one tunnel build-out resistor are set all, described two-way coupling capacitance is connected on the both positive and negative polarity transmission line that is used for transmitting audio signal respectively, at the prime and back level difference one road voltage attenuation resistance in parallel of two-way coupling capacitance, the anodal pin of described build-out resistor and described external audio output interface or the anodal pin of described lead-out terminal are in series.
It three is, in described audio frequency output coupling circuit and audio frequency input coupling circuit one group of photoelectrical coupler is set all, is connected in the audio signal transmission wire, and the audio signal of being transmitted is carried out the photoelectricity isolation processing.
Further again, described audio frequency output coupling circuit and audio frequency input coupling circuit are built in the boxcar, and are connected with external audio input interface is corresponding with described input terminal, lead-out terminal and external audio output interface by the cable that is placed on boxcar respectively.
In order to improve the flexibility that described communication apparatus audio interface is used, preferably described audio frequency output coupling circuit and audio frequency input coupling circuit are built in the boxcar professional audio interface that is provided for the telephony interface of external described input terminal and lead-out terminal on the boxcar and is used for external described external audio output interface and external audio input interface.In actual application, only need option interface type suitable audio signal cable to be plugged in described telephony interface and the professional audio interface and get final product.
Compared with prior art, advantage of the present utility model and good effect are: communication apparatus audio interface of the present utility model is simple in structure, cheap for manufacturing cost, the landline telephone of not only can plugging into, and can with mobile phone, Personal Handyphone System, mobile communication equipments such as intercom are used, therefore can not be subjected to using the restriction in place, even hold performance or taped broadcast program in the open air, also can realize phone interaction easily with the outside audience, the voice signal that promptly extracts the outside audience on the one hand from mobile phone transfers to on-the-spot sound system and plays, audio signal with the scene returns to the outside audience who throws hot line into by mobile phone on the other hand, and it is convenient flexibly to use.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the communication apparatus audio interface that proposes of the utility model;
Fig. 2 uses the constructed system architecture diagram of communication apparatus audio interface that the utility model proposed;
Fig. 3 is the external structure schematic diagram of a kind of embodiment of communication apparatus audio interface;
Fig. 4 is the circuit theory diagrams of a kind of embodiment of communication apparatus audio interface;
Fig. 5 is the circuit theory diagrams of another embodiment of communication apparatus audio interface;
Fig. 6 is the circuit theory diagrams of the third embodiment of communication apparatus audio interface.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
Embodiment one, referring to shown in Figure 1, the communication apparatus audio interface of present embodiment comprises the input terminal J1, the lead-out terminal J2 that are used to connect communication apparatus and the external audio output interface J3 and the external audio input interface J4 that are used to be connected external speakers system or sound console.In order to satisfy communication apparatus and external speakers system or sound console to the requirement of input and output Audio Meter amplitude, present embodiment also further is provided with audio frequency output coupling circuit between described input terminal J1 and external audio output interface J3; Between lead-out terminal J2 and external audio input interface J4, also further be connected with the audio frequency input coupling circuit.
In actual application, utilize input terminal J1 to receive the audio signal of desiring to export to its receiver or earphone in the communication apparatus, can directly described input terminal J1 be connected on the audio signal output line of communication apparatus inside, spectators' voice that collection hears by communication apparatus, convert sound system or the desired level signal of sound console to by audio frequency output coupling circuit, transfer to sound system or sound console by external audio output interface J3, thereby outside audience's sound can clearly be played back at the scene or in the recording studio.Same, voice for on-the-spot host can transfer to sound console by microphone, connect described external audio input interface J4 by sound console then, after the audio frequency input coupling circuit carries out the level match conversion, generation can be satisfied communication apparatus and insert the level signal that requires, transfer to the microphone interface of communication apparatus by lead-out terminal J2, and then feed back to the outside audience who throws hot line into by communication apparatus.Described lead-out terminal J2 can be directly connected to the audio signal incoming line that is used to connect microphone interface in the communication apparatus, also can be integrated in the lump in the telephone plug of a standard with input terminal J1.Adopt a kind of design in back can need not existing communication apparatus is changed, only need described telephone plug is inserted into and can finish on the interface of be used on the communication apparatus to peg graft earphone or receiver being connected of described audio interface and existing communication apparatus, more convenient to use fast.
Fig. 2 is a kind of application exemplary plot of described communication apparatus audio interface, audio frequency can be exported coupling circuit and audio frequency input coupling circuit in the present embodiment and be built in the boxcar 2, by external cable and described input terminal J1, lead-out terminal J2, external audio output interface J3 and corresponding connection of external audio input interface J4.Present embodiment is that example describes with the telephone plug J1-2 that adopts standard, and the type of described telephone plug J1-2 should be suitable with the interface type of the communication apparatus that is used to answer hotline.As shown in Figure 2, answer hotline if adopt mobile communication equipments such as mobile phone, Personal Handyphone System, intercom, the type of then described telephone plug J1-2 should be suitable be used to the to peg graft interface type of earphone on the mobile communication equipment, such as the 3.5mm earphone interface, 2.5mm earphone interface or the USB interface that generally adopt on the mobile phone at present, pop-port interface etc.Answer the hotline that the outside audience makes if adopt fixed telephone, the type that then is connected the telephone plug on the communication apparatus audio interface should be suitable be used to the to peg graft interface type of receiver on the landline telephone, such as the RJ11 interface of fixed telephone common configuration at present etc.
Telephone plug J1-2 is plugged on the communication apparatus, on the earphone interface of mobile phone 1 for example shown in Figure 2, originally the audio frequency terminal that is used for connecting external earphone in the earphone interface is connected with the input terminal J1 of telephone plug J1-2 this moment, and the audio frequency terminal that is used for connecting microphone in the earphone interface originally is connected with the lead-out terminal J2 of telephone plug J1-2 this moment.External audio output interface J3 in the communication apparatus audio interface is plugged on the input of sound system or sound console, external audio input interface J4 then can be plugged into the output of sound console in the performance backstage, export communication apparatus to after by sound console host's voice and on-the-spot background sound being mixed, and then be sent to the outside audience.In the present embodiment, described external audio output interface J3 and external audio input interface J4 can select configuration according to the interface type that present sound console or sound system generally adopt, such as adopting in cannon connector, big three-prong plug, little three-prong plug, big two core plug and the RCA connector one or more.Fig. 2 is for adopting the topology example figure of cannon connector, and wherein, external audio output interface J3 can select the agricultural public plug of card for use; External audio input interface J4 can select the agricultural female of card for use.
Certainly, present embodiment is not limited in above giving an example to the particular type of telephone plug J1-2 and external audio output interface J3, external audio input interface J4.Can dispose polytype telephone plug J1-2 and various types of external audio output interface J3 and external audio input interface J4 on described communication apparatus audio interface simultaneously, the user only need select the interface of adequate types to be plugged on communication apparatus and sound system or the sound console to get final product in actual use as the case may be.
In order to improve the overall aesthetics of described communication apparatus audio interface, can adopt split-type structural design, being about to audio frequency output coupling circuit and audio frequency input coupling circuit is built in the boxcar 2, on boxcar 2, be provided for the telephony interface 3 of external described input terminal J1 and lead-out terminal J2, and the professional audio interface 4 that is used for external described external audio output interface J3 and external audio input interface J4, referring to shown in Figure 3.In use, only needing option interface type suitable audio signal cable to be plugged in described telephony interface 3 and the professional audio interface 4 gets final product.
Can adopt multiple version design to realize for output coupling circuit of the audio frequency in the communication apparatus audio interface and audio frequency input coupling circuit, Fig. 4,5,6 has enumerated three kinds of physical circuits respectively sets up form, below these three kinds of circuit structures is set forth respectively.
Among Fig. 4, audio frequency output coupling circuit adopts isolating transformer T1 and coupling capacitance C1, C2 to set up realization; The audio frequency input coupling circuit adopts isolating transformer T2 to cooperate build-out resistor R1 to set up and realizes.Specifically, after audio signal by communication apparatus output inserts via input terminal J1, by being connected on coupling capacitance C1, C2 on the audio signal wire processing that is coupled, isolate the flip-flop in the audio signal, and then transfer to the elementary of isolating transformer T1.The both positive and negative polarity pin of the external audio output interface J3 of secondary connection of isolating transformer T1, such as 2,3 pin of the agricultural interface of card, the audio signal of communication apparatus output carried out isolation processing after, export sound console or sound system to and carry out live play.On the other hand, after inserting by external audio input interface J4 from the audio signal at scene, transfer to the elementary of isolating transformer T2, after isolating transformer T2 carries out isolation processing, through its secondary lead-out terminal J2 that transfers to.In order to realize impedance matching, the secondary build-out resistor R1 that is parallel with at described isolating transformer T2 carries out choose reasonable by the resistance to described build-out resistor R1, can mate the impedance of communication apparatus sound intermediate frequency amplifying circuit.
Among Fig. 5, audio frequency output coupling circuit all adopts two-way coupling capacitance, two-way voltage attenuation resistance to be connected realization with one tunnel build-out resistor with the audio frequency input coupling circuit.Wherein, coupling capacitance C3, C4 are connected on respectively on the both positive and negative polarity audio signal wire between input terminal J1 and the external audio output interface J3, and the audio signal that is transmitted is carried out every straight processing.Prime and back level difference one road damping resistance R2 in parallel, R3 at described coupling capacitance C3, C4, after the audio signal voltage that is transmitted decayed, further after the build-out resistor R4 that the anodal pin with described external audio output interface J3 is in series carries out impedance matching, export outside sound console or sound system to by external audio output interface J3.In like manner, coupling capacitance C5, C6 are connected on respectively on the both positive and negative polarity audio signal wire between lead-out terminal J2 and the external audio input interface J4; At prime and back level difference one road damping resistance R5 in parallel, the R6 of described coupling capacitance C5, C6, the anodal pin of build-out resistor R7 and described lead-out terminal J2 is in series.In order to realize impedance matching with dissimilar communication apparatus and sound system easily, present embodiment preferably adopts variable resistance to carry out circuit design as described build-out resistor R4, R7.
Among Fig. 6, adopt photoelectrical coupler to design described audio frequency output coupling circuit and audio frequency input coupling circuit.Connect separately in the audio signal transmission wire between input terminal J1 and the external audio output interface J3 and in the audio signal transmission wire between lead-out terminal J2 and the external audio input interface J4 one group of photoelectrical coupler U1, U2 are to carry out the photoelectricity isolation processing to the audio signal of being transmitted.
Certainly, can also adopt other multiple establishment structure for audio frequency output coupling circuit and audio frequency input coupling circuit, present embodiment is not limited in above giving an example.
Enumerate the three kinds of application scenarios that can adopt the communication apparatus audio interface that present embodiment proposes below:
1, when carrying out the scene performance, on-the-spot host needs the telephone connection outside audience, adopt the communication apparatus audio interface of present embodiment, only need a regular handset to come the line outside audience, this audio interface is plugged between mobile phone and the sound console, after the background music of the voice signal of host's handheld microphone and the cheer of audience and program can carry out audio mixing by sound console, send to the external audio input interface J4 of this audio interface, and then send the spectators that throw hot line outside the venue into to by mobile phone.Meanwhile, outside audience's voice signal also can be sent to sound console by this audio interface, send into sound system through sound console and play, allowing on-the-spot spectators, host and performer clearly hear, thereby realized the on-the-spot interaction function with the outside audience of performance.
2, certain big assembly place, Site Design has certain leader's speech, and this leader can not arrive because of thing, just can utilize the communication apparatus audio interface of present embodiment to be connected between a regular handset and the on-the-spot sound system this moment, the leader gives a lecture by the personnel of phone one side to the scene in the other places, can hear on-the-spot feedback on the other hand.
If 3 have the multi-section phone to be linked into local sound console by the communication apparatus audio interface of present embodiment, then can realize the remote phone conferencing function, the on-the-spot voice that can hear from every phone, the participant who throws phone into also can hear on-the-spot speech situation, realizes conference call functions.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (10)
1. communication apparatus audio interface, it is characterized in that: comprise that being used to receive communication apparatus exports the input terminal of audio signal of its earphone or receiver and the lead-out terminal of the microphone interface that is used to be connected communication apparatus to, described input terminal connects external audio output interface by audio frequency output coupling circuit, and described lead-out terminal connects external audio input interface by the audio frequency input coupling circuit.
2. communication apparatus audio interface according to claim 1 is characterized in that: described input terminal and lead-out terminal are arranged in the telephone plug, and the type of described telephone plug and the interface type of communication apparatus are suitable.
3. communication apparatus audio interface according to claim 2 is characterized in that: described communication apparatus is a mobile communication equipment, and the interface type of the earphone that is used on the type of described telephone plug and the described mobile communication equipment to peg graft is suitable.
4. communication apparatus audio interface according to claim 2 is characterized in that: described communication apparatus is a landline telephone, and the interface type of the receiver that is used on the type of described telephone plug and the landline telephone to peg graft is suitable.
5. communication apparatus audio interface according to claim 1 is characterized in that: described external audio output interface and external audio input interface are one or more in the agricultural interface of card, big three core interfaces, little three core interfaces, big two core interfaces and the RCA jack.
6. according to each described communication apparatus audio interface in the claim 1 to 5, it is characterized in that: in described audio frequency output coupling circuit, comprise coupling capacitance and isolating transformer, described input terminal connects the elementary of isolating transformer, the external audio output interface of secondary connection of described isolating transformer by the coupling capacitance of series connection; Comprise another isolating transformer and build-out resistor in described audio frequency input coupling circuit, the external audio input interface of elementary connection of described another isolating transformer after secondary and described build-out resistor is in parallel, is connected to described lead-out terminal.
7. according to each described communication apparatus audio interface in the claim 1 to 5, it is characterized in that: in described audio frequency output coupling circuit and audio frequency input coupling circuit, all include the two-way coupling capacitance, two-way voltage attenuation resistance and one tunnel build-out resistor, described two-way coupling capacitance is connected on the both positive and negative polarity transmission line that is used for transmitting audio signal respectively, at the prime and back level difference one road voltage attenuation resistance in parallel of two-way coupling capacitance, the anodal pin of described build-out resistor and described external audio output interface or the anodal pin of described lead-out terminal are in series.
8. according to each described communication apparatus audio interface in the claim 1 to 5, it is characterized in that: in described audio frequency output coupling circuit and audio frequency input coupling circuit, all include one group of photoelectrical coupler, be connected in the audio signal transmission wire, the audio signal of being transmitted is carried out the photoelectricity isolation processing.
9. according to each described communication apparatus audio interface in the claim 1 to 5, it is characterized in that: described audio frequency output coupling circuit and audio frequency input coupling circuit are built in the boxcar, and are connected with external audio input interface is corresponding with described input terminal, lead-out terminal and external audio output interface by the cable that is placed on boxcar respectively.
10. according to each described communication apparatus audio interface in the claim 1 to 5, it is characterized in that: described audio frequency output coupling circuit and audio frequency input coupling circuit are built in the boxcar, and boxcar is provided with telephony interface that is used for external described input terminal and lead-out terminal and the professional audio interface that is used for external described external audio output interface and external audio input interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205821933U CN201869241U (en) | 2010-10-22 | 2010-10-22 | Audio interface of communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205821933U CN201869241U (en) | 2010-10-22 | 2010-10-22 | Audio interface of communication equipment |
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| CN201869241U true CN201869241U (en) | 2011-06-15 |
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| CN2010205821933U Expired - Fee Related CN201869241U (en) | 2010-10-22 | 2010-10-22 | Audio interface of communication equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716736A (en) * | 2013-12-18 | 2014-04-09 | 福建星网视易信息系统有限公司 | Noise elimination device in audio interconnection device |
| CN106231460A (en) * | 2016-08-03 | 2016-12-14 | 深圳Tcl数字技术有限公司 | The multiplexing method of earphone interface and device |
| CN113450518A (en) * | 2021-06-25 | 2021-09-28 | 李伟 | Computer audio output connects sound console protection early warning device |
-
2010
- 2010-10-22 CN CN2010205821933U patent/CN201869241U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716736A (en) * | 2013-12-18 | 2014-04-09 | 福建星网视易信息系统有限公司 | Noise elimination device in audio interconnection device |
| CN106231460A (en) * | 2016-08-03 | 2016-12-14 | 深圳Tcl数字技术有限公司 | The multiplexing method of earphone interface and device |
| CN106231460B (en) * | 2016-08-03 | 2019-05-31 | 深圳Tcl数字技术有限公司 | The multiplexing method and device of earphone interface |
| CN113450518A (en) * | 2021-06-25 | 2021-09-28 | 李伟 | Computer audio output connects sound console protection early warning device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20121022 |