CN211378215U - Microphone connecting system and vehicle - Google Patents
Microphone connecting system and vehicle Download PDFInfo
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- CN211378215U CN211378215U CN202020445343.XU CN202020445343U CN211378215U CN 211378215 U CN211378215 U CN 211378215U CN 202020445343 U CN202020445343 U CN 202020445343U CN 211378215 U CN211378215 U CN 211378215U
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Abstract
The utility model provides a microphone connected system and vehicle relates to vehicle electron electrical apparatus field. The utility model discloses an at least one main microphone and at least one vice microphone, wherein, the main microphone embeds there is the A2B chip, is equipped with at least one bus interface and at least one PDM interface on the A2B chip, and the bus interface of A2B chip passes through the pencil and is connected in the bus interface of the A2B chip and the amusement host computer of vehicle in at least one main microphone, and vice microphone passes through the PDM interface connection of pencil and main microphone. The utility model discloses only set up the A2B chip in partial microphone, the vice microphone that does not set up the A2B chip passes through the PDM interface and is connected with main microphone 1 to transmit the audio frequency to the entertainment host computer through the A2B chip in the main microphone, consequently, the audio frequency of all microphones can both be transmitted to the entertainment host computer through the A2B chip, thereby the tone quality of audio frequency has been improved, the tone quality loss has been reduced.
Description
Technical Field
The utility model relates to a vehicle electron electrical apparatus field especially relates to a microphone connected system and vehicle.
Background
There are two connection methods for microphones in the prior art:
the first method comprises the following steps: each microphone is transmitted to the in-vehicle entertainment host through a hard wire, each microphone needs to be connected with the in-vehicle entertainment host through an independent wire harness, and an ADC (analog-to-digital converter) needs to be configured inside the entertainment host for digital-to-analog conversion and then is converted into a digital signal for processing. However, because the analog microphone is used, the noise of the external environment can be received in the transmission process, so that the tone quality can be lost, and in addition, the digital-to-analog conversion is carried out in the in-vehicle entertainment host, the tone quality can be correspondingly lost.
And the second method comprises the following steps: the in-vehicle entertainment host transmits audio signals to each microphone through an A2B audio transmission protocol by adopting an A2B bus mode, a chip of A2B is arranged in each microphone and connected in a daisy chain mode, one of the microphones is connected to the in-vehicle entertainment host, the A2B chip is also arranged in the in-vehicle entertainment host to receive, transmit and process the audio signals transmitted by all the microphones, and the connection mode is an unshielded twisted pair. Although the mode of A2B digital signal transmission can effectively prevent interference, the audio quality is higher, and the in-vehicle entertainment host can be directly used after receiving the audio signal without digital-to-analog conversion. But are relatively expensive and require A2B receiving or transmitting chip to be located in both the in-vehicle entertainment host and each microphone.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an object of first aspect is to provide a microphone connected system, solve among the prior art microphone audio frequency can lead to the problem of tone quality variation in transmission process.
The utility model discloses a further purpose of first aspect is to reduce the use quantity of A2B chip.
The utility model discloses the purpose of second aspect provides a vehicle.
According to the utility model discloses an aim of first aspect, the utility model provides a microphone connected system, include:
the main microphone is internally provided with an A2B chip, the A2B chip is provided with at least one bus interface and at least one PDM interface, and the bus interface of the A2B chip in the at least one main microphone is connected with the bus interface of the A2B chip in the entertainment host of the vehicle through a wire harness;
at least one secondary microphone interfaced with the PDM of the primary microphone by a wire harness.
Optionally, the number of primary microphones is two.
Optionally, the bus interfaces of the two main microphones are connected with each other through a wire harness, and one of the two main microphones adjacent to the entertainment host is connected with the entertainment host.
Optionally, the number of bus interfaces of the A2B chip is two.
Optionally, the number of PDM interfaces of the A2B chip is ten.
Optionally, the number of the secondary microphones is two.
Optionally, each of the primary microphones is connected to one of the secondary microphones.
According to the utility model discloses the purpose of second aspect, the utility model also provides a vehicle, it installs foretell microphone connected system.
The utility model discloses an at least one main microphone and at least one vice microphone, wherein, the main microphone embeds there is the A2B chip, is equipped with at least one bus interface and at least one PDM interface on the A2B chip, and the bus interface of A2B chip passes through the pencil and is connected in the bus interface of the A2B chip and the amusement host computer of vehicle in at least one main microphone, and vice microphone passes through the PDM interface connection of pencil and main microphone. The utility model discloses only set up the A2B chip in partial microphone, the vice microphone that does not set up the A2B chip passes through the PDM interface and is connected with main microphone to transmit the audio frequency to the entertainment host computer through the A2B chip in the main microphone, consequently, the audio frequency of all microphones can both be transmitted to the entertainment host computer through the A2B chip, thereby improved the tone quality of audio frequency, reduced the tone quality loss.
Further, compared with the prior art, the present invention only sets the A2B chip in the main microphone, rather than setting the A2B chip in all microphones, and therefore, the number of the A2B chips used is reduced, thereby further reducing the cost.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic connection diagram of a microphone connection system according to an embodiment of the present invention;
fig. 2 is a schematic connection diagram of a microphone connection system according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Fig. 1 is a schematic connection diagram of a microphone connection system according to an embodiment of the present invention, and fig. 2 is a schematic connection diagram of a microphone connection system according to another embodiment of the present invention. As shown in fig. 1-2, in a specific embodiment, the microphone connection system 100 may generally include at least one primary microphone 1 and at least one secondary microphone 2, wherein the primary microphone 1 is embedded with an A2B chip 11, the A2B chip 11 is provided with at least one bus interface (not shown) and at least one PDM interface (not shown), and the bus interface of the A2B chip 11 of the at least one primary microphone 1 is connected with the bus interface of the A2B chip 11 of the entertainment host 3 of the vehicle through a wire harness. The secondary microphone 2 is connected to the PDM interface of the primary microphone 1 by a harness. Here, the farthest transmission distance of the sub microphone 2 from the main microphone 1 is 2 meters, and the A2B chip 11 can receive and output an audio signal.
The utility model discloses only set up A2B chip 11 in partial microphone, the vice microphone 2 that does not set up A2B chip 11 is connected with main microphone 1 through the PDM interface to A2B chip 11 through in the main microphone 1 transmits the audio frequency to entertainment host computer 3, consequently, the audio frequency of all microphones can both be transmitted to entertainment host computer 3 through A2B chip 11, thereby the tone quality of audio frequency has been improved, the tone quality loss has been reduced.
In one embodiment, the number of primary microphones 1 is two. The bus interfaces of the two main microphones 1 are connected to each other by a wire harness, and one of the two main microphones 1 adjacent to the entertainment host 3 is connected to the entertainment host 3. The utility model discloses in only one main microphone 1 is connected with entertainment host computer 3, other main microphones 1 establish ties in proper order, compare with the scheme that all main microphones 1 all are connected with entertainment host computer 3, have reduced the use of pencil, further the cost is reduced.
Further, the number of the sub microphones 2 is two. Each main microphone 1 is connected with a corresponding auxiliary microphone 2.
The utility model discloses carry out audio communication through the PDM agreement between well main microphone 1 and the vice microphone 2 of being connected with it, main microphone 1 is connected with entertainment host computer 3 through the bus of A2B chip 11. The auxiliary microphone 2 transmits the collected audio to the main microphone 1 through a PDM protocol, the main microphone 1 puts the audio collected by the main microphone 1 and the audio collected by the auxiliary microphone 2 connected with the main microphone into a bus of an A2B chip 11 to be transmitted to the entertainment host 3, the entertainment host 3 receives and processes the audio signal transmitted by the A2B chip 11, and in the transmission process, the audio can be transmitted to the entertainment host 3 through the bus of the A2B chip 11, so that the tone quality of the audio can be ensured.
Furthermore, the main microphone 1 is connected with the entertainment host 3 through an unshielded twisted pair, and the auxiliary microphone 2 is connected with the main microphone 1 through a shielded wire, so that the PDM signal is prevented from declining.
Further, the number of bus interfaces of the A2B chip 11 is two, and the number of PDM interfaces of the A2B chip 11 is ten. That is, the main microphones 1 may be connected in series in turn, and ten sub-microphones 2 may be connected to each main microphone 1. The utility model discloses an applicability is very wide, can link together a large amount of microphones to can guarantee that the tone quality of every microphone audio frequency is all fine.
The utility model also provides a vehicle, its microphone connected system 100 of installing in any one of above-mentioned embodiments. The microphone connection system 100 is not described in detail herein.
The utility model discloses utilize PDM agreement and A2B chip 11's expansibility in the A2B chip 11, utilize 1A 2B chip 11 to connect the mode of a plurality of vice microphones 2 to can improve the tone quality of audio frequency, reduce the use quantity of A2B chip 11 simultaneously, reduce the cost expense.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (8)
1. A microphone attachment system, comprising:
the main microphone is internally provided with an A2B chip, the A2B chip is provided with at least one bus interface and at least one PDM interface, and the bus interface of the A2B chip in the at least one main microphone is connected with the bus interface of the A2B chip in the entertainment host of the vehicle through a wire harness;
at least one secondary microphone interfaced with the PDM of the primary microphone by a wire harness.
2. The microphone connecting system according to claim 1,
the number of the main microphones is two.
3. The microphone connecting system according to claim 2,
the bus interfaces of the two main microphones are connected with each other through a wire harness, and one of the two main microphones adjacent to the entertainment host is connected with the entertainment host.
4. The microphone connecting system according to claim 1,
the number of the bus interfaces of the A2B chip is two.
5. The microphone connecting system according to claim 1,
the number of PDM interfaces of the A2B chip is ten.
6. The microphone connecting system according to claim 2,
the number of the auxiliary microphones is two.
7. The microphone connecting system according to claim 6,
and each main microphone is correspondingly connected with one auxiliary microphone.
8. A vehicle, characterized in that the vehicle is equipped with a microphone connection system according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020445343.XU CN211378215U (en) | 2020-03-31 | 2020-03-31 | Microphone connecting system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020445343.XU CN211378215U (en) | 2020-03-31 | 2020-03-31 | Microphone connecting system and vehicle |
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| Publication Number | Publication Date |
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| CN211378215U true CN211378215U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020445343.XU Active CN211378215U (en) | 2020-03-31 | 2020-03-31 | Microphone connecting system and vehicle |
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| CN (1) | CN211378215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116709282A (en) * | 2023-06-20 | 2023-09-05 | 河北初光汽车部件有限公司 | Automobile Bluetooth audio system capable of being conveniently disassembled and assembled |
-
2020
- 2020-03-31 CN CN202020445343.XU patent/CN211378215U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116709282A (en) * | 2023-06-20 | 2023-09-05 | 河北初光汽车部件有限公司 | Automobile Bluetooth audio system capable of being conveniently disassembled and assembled |
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