CN213990749U - Intercommunication audio circuit and device based on mobile phone - Google Patents
Intercommunication audio circuit and device based on mobile phone Download PDFInfo
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- CN213990749U CN213990749U CN202023307815.4U CN202023307815U CN213990749U CN 213990749 U CN213990749 U CN 213990749U CN 202023307815 U CN202023307815 U CN 202023307815U CN 213990749 U CN213990749 U CN 213990749U
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Abstract
The utility model provides an audio circuit and device talkback based on cell-phone, the audio circuit of talkbacking includes: the mobile phone comprises a main microphone, an auxiliary microphone, a receiver, a loudspeaker, a second change-over switch, a third change-over switch, an interphone and an audio power amplifier, wherein the main microphone and the auxiliary microphone are respectively connected to an audio input port of the mobile phone; the main microphone and the external output channel of the mobile phone are connected to the selection end of the second change-over switch, and the public end of the second change-over switch is connected to the audio input port of the interphone; the audio frequency of cell-phone and intercom is connected to in proper order third change over switch, audio power amplifier and loudspeaker, the audio output port of intercom still is connected to the vice microphone of cell-phone. The utility model discloses a based on the smart mobile phone increases the intercom function and provides fine hardware basis, realized that ordinary talkback and network talkback transmit mutually, trade users such as accord with to the user demand of intercom, improved the intelligent design degree of the product of talkbacking.
Description
Technical Field
The utility model relates to an audio circuit talkbacks especially relates to an audio device talkbacks based on cell-phone to further relate to including this audio device talkbacks based on audio circuit talkbacks of cell-phone.
Background
Users in the industries such as public security, fire protection, petroleum and petrochemical, railway and property industry have great dependence on the use of a interphone (PTT), and the intellectualization of equipment is a problem facing the industries. The application range of the existing smart phone is quite wide, so how to add a interphone (PTT) on the basis of the smart phone is a good solution and direction, but the smart phone and the interphone system have multi-channel audio input and output, the audio design of the whole system is complex and difficult to cover all application scenes, and therefore the structural design of the smart phone needs to be optimized.
Disclosure of Invention
The utility model aims to solve the technical problem that a need provide one kind can be for increasing intercom (PTT) function based on smart mobile phone and provide the audio frequency device that talkbacks of hardware basis to further provide the audio frequency device that talkbacks including this audio frequency circuit that talkbacks.
To this, the utility model provides a talkback audio circuit based on cell-phone, include: the mobile phone comprises a main microphone, an auxiliary microphone, a receiver, a loudspeaker, a second change-over switch, a third change-over switch, an interphone and an audio power amplifier, wherein the main microphone and the auxiliary microphone are respectively connected to an audio input port of the mobile phone, and an audio output port of the mobile phone is respectively connected to the receiver, the second change-over switch and the third change-over switch; the main microphone and the external output channel of the mobile phone are connected to the selection end of the second change-over switch, and the public end of the second change-over switch is connected to the audio input port of the interphone; the external output channel of the mobile phone and the audio output port of the interphone are sequentially connected to the third selector switch, the audio power amplifier and the loudspeaker; and the audio output port of the interphone is also connected to the input port of the secondary microphone of the mobile phone.
The utility model discloses a further improvement lies in, still includes the earphone microphone, the earphone microphone passes through the second change over switch is connected to the intercom.
The utility model discloses a further improvement lies in, still include the earphone and control sound channel and first change over switch, intercom and cell-phone pass through first change over switch connects to the sound channel about the earphone.
The utility model discloses a further improvement lies in, the intercom respectively with first change over switch, third change over switch and vice microphone are connected.
The utility model discloses a further improvement lies in, the earphone microphone is connected to respectively cell-phone and third change over switch.
The utility model discloses a further improvement lies in, first change over switch is double-pole double-throw switch or single-pole double-throw switch, a set of input of first change over switch is connected to the cell-phone, another input of group of first change over switch is connected to the audio output mouth of intercom.
The utility model discloses a further improvement lies in, the second change over switch is double-pole triple-throw switch or single-pole triple-throw switch, three group's inputs of second change over switch are connected to cell-phone, main microphone and earphone microphone respectively.
The utility model discloses a further improvement lies in, the third change over switch is double-pole double-throw switch or single-pole double-throw switch, a set of input of third change over switch is connected to the cell-phone, another input of group of third change over switch is connected to intercom and earthing terminal.
The utility model discloses a further improvement lies in, first change over switch, second change over switch and third change over switch all are connected with cell-phone GPIO mouth.
The utility model also provides an audio frequency device talkbacks based on cell-phone, included as above the audio frequency circuit talkbacks based on cell-phone.
Compared with the prior art, the beneficial effects of the utility model reside in that: through the structural principle design of the optimized circuit, the input and output control of the talkback audio based on the mobile phone is realized, a good hardware basis is provided for adding a function of a interphone (PTT), recording the talkback audio, transmitting the talkback audio through a network, receiving the audio and transmitting the network audio through the interphone based on the smart mobile phone, the use requirements of users in the industries such as public security, fire protection, petroleum and petrochemical industry, railway, property industry and the like on the interphone (PTT) are met, and the intelligent design degree of talkback products is improved.
Drawings
Fig. 1 is a schematic diagram of a circuit structure according to an embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, this example provides a talkback audio circuit based on a mobile phone, which includes: the mobile phone comprises a main microphone 1, an auxiliary microphone 2, a receiver 3, a loudspeaker 4, a second change-over switch 5, a third change-over switch 6, an interphone 7 and an audio power amplifier 8, wherein the main microphone 1 and the auxiliary microphone 2 are respectively connected to an audio input port of a mobile phone 12, and an audio output port of the mobile phone 12 is respectively connected to the receiver 3, the second change-over switch 5 and the third change-over switch 6; the external output channels of the main microphone 1 and the mobile phone 12 are connected to the selection end of the second switch 5, and the common end of the second switch 5 is connected to the audio input port of the interphone 7; the outgoing output channel of the mobile phone 12 and the audio output port of the interphone 7 are simultaneously connected to the third selector switch 6, the audio power amplifier 8 and the loudspeaker 4 in sequence; the audio output port of the interphone 7 is also connected to the auxiliary microphone input port of the mobile phone 12. The mobile phone 12 refers to a smart phone SOC, and the smart phone SOC is used for implementing scene recognition, such as earphone plugging, incoming call, and intercom receiving and sending, and controlling an audio channel according to scene changes. The Main microphone 1 is referred to as a Main microphone (Main MIC), and the Main microphone 1 is connected to the mobile phone 12 and the second switch 5, respectively.
As shown in fig. 1, this example further includes an earphone microphone 9, earphone left and right channels 10, and a first switch 11, where the earphone microphone 9 is connected to the intercom 7 through the second switch 5; the interphone 7 is connected to the left and right sound channels 10 of the earphone through the first switch 11. The Sub microphone 2 is referred to as a Sub microphone MIC, and the intercom 7 is connected to the first switch 11, the third switch 6, and the Sub microphone 2 (Sub MIC), respectively.
Wherein the main microphone 1, the sub-microphone 2 and the earphone microphone 9 are used for picking up audio in this example. The receiver 3, the loudspeaker 4 and the left and right sound channels 10 of the earphone are used for playing system sound. The first change-over switch 11, the second change-over switch 5 and the third change-over switch 6 are electronic switches, and are used for switching audio input and output channels according to a control signal of the smartphone SOC.
When the mobile phone function is used, sound is input from the main microphone 1, the sub-microphone 2, or the headphone microphone 9, and is output from the speaker 4 or the headphone left and right channels 10. When the intercom is transmitted, sound is input from the main microphone 1 or the earphone microphone 9, enters the interphone 7 through the change-over switch and is sent out by the interphone 7, and meanwhile, the sound of the main microphone 1 enters the mobile phone 12 and is recorded and stored when the intercom is transmitted. When the interphone receives the voice, the voice is output from the interphone 7, is output to the left and right sound channels 10 of the earphone through the first selector switch 11 or is output to the audio power amplifier 8 through the third selector switch 6, and then is emitted by the loudspeaker 4, meanwhile, the voice of the interphone 7 enters the mobile phone 12, and the mobile phone 12 records and stores the received voice.
In the implementation process of this embodiment, the voice input process of the mobile phone 12 is as follows: sound enters the handset 12 from the primary microphone 1 and the secondary microphone 2. In the voice output process of the mobile phone 12, in the receiver mode, the sound is output from the mobile phone 12 and directly reaches the receiver 3; in the play-out mode, sound is output from the handset 12, through the third switch 6 and the audio amplifier 8 to the speaker 4.
The earphone input process of the mobile phone in the embodiment is that the earphone microphone 9 directly enters the mobile phone 12; the output process of the mobile phone earphone is that the output port of the mobile phone earphone reaches the left and right sound channels 10 of the earphone through the first change-over switch 11.
In the talkback transmission process, the main microphone 1 enters the interphone 7 through the second change-over switch 5; the recording process is that the main microphone 1 enters the mobile phone 12. In the talkback receiving process, the output of the interphone 7 passes through the third selector switch 6 and reaches the loudspeaker 4 through the audio power amplifier 8; the recording process is that the output of the interphone 7 is connected to the mobile phone 12, and at this time, the sound of the secondary microphone 2 is covered because the output sound of the interphone is large.
In the process of the earphone talkback transmission, the earphone microphone 9 enters the interphone 7 through the second change-over switch 5; the sound recording process is that the earphone microphone 9 directly enters the mobile phone 12. The earphone talkback receiving process is that the output of the interphone 7 passes through the first switch 11 and is output from the earphone; and the recording receiving process is that the interphone 7 outputs and is connected to the mobile phone 12.
In the process of converting PTT to POC, the interphone 7 enters the mobile phone 12 for receiving and then is transmitted by the mobile phone 12 through the network. In the process of realizing the conversion from the network talkback POC to the network talkback PTT, the audio from the network is output from the mobile phone 12, input to the interphone 7 through the second selector switch 5 and sent out by the interphone 7.
As shown in fig. 1, in this embodiment, the first switch 11 is a double-pole double-throw switch (when the audio frequency goes differential) or a single-pole double-throw switch (when the audio frequency goes single-ended), one set of input terminals of the first switch 11 is connected to the mobile phone 12, and the other set of input terminals of the first switch 11 is connected to the secondary microphone 2 and the intercom 7. The second switch 5 is a double-pole-three-throw switch (when the audio frequency is different) or a single-pole-three-throw switch (when the audio frequency is single-ended), and three groups of input ends of the second switch 5 are respectively connected to the mobile phone 12, the main microphone 1 and the earphone microphone 9. The third switch 6 is a double-pole double-throw switch (when the audio frequency is different) or a single-pole double-throw switch (when the audio frequency is single-ended), one group of input ends of the third switch 6 is connected to the mobile phone 12, and the other group of input ends of the third switch 6 is connected to the interphone 7 and the ground end.
In this embodiment, the first switch 11, the second switch 5 and the third switch 6 are all connected to GPIO ports of the mobile phone, so that switching of GPIO control switches can be realized by the mobile phone.
The present example also provides a handset 12 based intercom audio device including the handset 12 based intercom audio circuit as described above.
In summary, the embodiment realizes the input and output control of the intercom audio based on the mobile phone 12 by optimizing the structural principle design of the circuit, provides a good hardware basis for adding the function of the intercom 7 (PTT) based on the mobile phone 12, realizing recording of the intercom audio, transmitting the intercom receiving audio through the network and transmitting the network audio through the intercom 7, meets the use requirements of users in the industries such as public security, fire protection, petroleum and petrochemical industry, railway industry, property industry and the like on the intercom 7 (PTT), and improves the intelligent design degree of the intercom products.
The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.
Claims (10)
1. A handset-based intercom audio circuit, comprising: the mobile phone comprises a main microphone, an auxiliary microphone, a receiver, a loudspeaker, a second change-over switch, a third change-over switch, an interphone and an audio power amplifier, wherein the main microphone and the auxiliary microphone are respectively connected to an audio input port of the mobile phone, and an audio output port of the mobile phone is respectively connected to the receiver, the second change-over switch and the third change-over switch; the main microphone and the external output channel of the mobile phone are connected to the selection end of the second change-over switch, and the public end of the second change-over switch is connected to the audio input port of the interphone; the external output channel of the mobile phone and the audio output port of the interphone are sequentially connected to the third selector switch, the audio power amplifier and the loudspeaker; and the audio output port of the interphone is also connected to the auxiliary microphone input port of the mobile phone.
2. The handset-based intercom audio circuit of claim 1, further comprising an earphone microphone connected to said intercom via said second switch.
3. The handset-based intercom audio circuit according to claim 2, further comprising left and right channels of headphones and a first switch, said intercom and handset being connected to said left and right channels of headphones through said first switch.
4. A handset-based intercom audio circuit as in claim 3 wherein said intercom is connected to said first switch, said third switch and said secondary microphone respectively.
5. A handset based intercom audio circuit as in claim 3 wherein said headset microphone is connected to said handset and a third switch, respectively.
6. A handset-based intercom audio circuit as in any one of claims 3-5, wherein said first switch is a double-pole double-throw switch or a single-pole double-throw switch, one set of inputs of said first switch is connected to a handset, and another set of inputs of said first switch is connected to an audio output port of said intercom.
7. A handset-based talk-back audio circuit according to any one of claims 2 to 5, wherein the second switch is a double pole triple throw switch or a single pole triple throw switch, and three sets of inputs of the second switch are connected to the handset, the main microphone and the earphone microphone respectively.
8. A handset-based intercom audio circuit as in any one of claims 2-5, wherein said third switch is a double-pole double-throw switch or a single-pole double-throw switch, one set of inputs of said third switch is connected to the handset, and another set of inputs of said third switch is connected to the intercom and the ground.
9. A handset-based talkback audio circuit according to claim 4 or 5, wherein the first switch, the second switch and the third switch are all connected to a GPIO port of the handset.
10. A mobile phone based intercom audio device comprising the mobile phone based intercom audio circuit of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202023307815.4U CN213990749U (en) | 2020-12-30 | 2020-12-30 | Intercommunication audio circuit and device based on mobile phone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023307815.4U CN213990749U (en) | 2020-12-30 | 2020-12-30 | Intercommunication audio circuit and device based on mobile phone |
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| CN213990749U true CN213990749U (en) | 2021-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115150492A (en) * | 2022-06-30 | 2022-10-04 | 青岛海信移动通信技术股份有限公司 | Mobile phone talkback all-in-one machine |
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2020
- 2020-12-30 CN CN202023307815.4U patent/CN213990749U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115150492A (en) * | 2022-06-30 | 2022-10-04 | 青岛海信移动通信技术股份有限公司 | Mobile phone talkback all-in-one machine |
| CN115150492B (en) * | 2022-06-30 | 2024-06-07 | 青岛海信移动通信技术有限公司 | Mobile phone intercom integrated machine |
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