CN210958793U - Vehicle-mounted array microphone - Google Patents
Vehicle-mounted array microphone Download PDFInfo
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- CN210958793U CN210958793U CN201921978572.1U CN201921978572U CN210958793U CN 210958793 U CN210958793 U CN 210958793U CN 201921978572 U CN201921978572 U CN 201921978572U CN 210958793 U CN210958793 U CN 210958793U
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Abstract
The utility model discloses an on-vehicle array microphone, including the three MEMS micromotor digital microphone that is triangle-shaped array and arranges, digital silicon microphone among the three MEMS micromotor digital microphone is integrated to the microphone PCB board on, the microphone PCB board is placed in the roof lamp, the roof lamp is offered and is used for collecting the dome lamp trompil of sound signal, the digital signal that the MEMS micromotor digital microphone was collected changes into A2B signal through A2B conversion chip, and with A2B signal transmission to the car machine through the twisted-pair line, handle the signal through the DSP chip in the car machine. The utility model discloses a little motor digital microphone of three MEMS contrasts traditional ECM microphone, and the MEMS microphone possesses the advantage of high sensitivity, high uniformity, high noise immunity nature. The signal transmission adopts the connection scheme of A2B, can be convenient a plurality of audio equipment of connection to reduce pencil complexity and weight in a large number, and signal interference killing feature is strong, transmission distance is long, signal delay is little, scalability is stronger.
Description
The technical field is as follows:
the utility model relates to a car stereo set entertainment system especially relates to an on-vehicle array microphone.
Background art:
the traditional vehicle-mounted microphone is mainly used for realizing a call function in the vehicle driving process, an electret microphone is mostly adopted, and along with the development of vehicle intellectualization, voice interaction is used as a man-machine interaction mode more suitable for a driving scene, so that the vehicle-mounted microphone is widely applied by vehicle enterprises, and the requirements of users on the microphone are higher and higher. For example, in a vehicle driving scene, not only ambient noise but also echo and reverberation exist, and the denoising effect of the conventional single-channel speech enhancement method often cannot meet the actual requirement.
The utility model has the following contents:
the utility model relates to a solve the problem that above-mentioned prior art exists and provide an on-vehicle array microphone, its sound localization through the mode reinforcing pronunciation that adopts the microphone array improves the speech recognition rate, reinforcing pronunciation interactive effect.
The utility model discloses the technical scheme who adopts has: the utility model provides a vehicle-mounted array microphone, including the little motor digital microphone of three MEMS that are triangle-shaped array arrangement, digital silicon microphone among the little motor digital microphone of three MEMS is integrated to on the microphone PCB board, the microphone PCB board is placed in the roof lamp, the roof lamp is seted up and is used for collecting the dome lamp trompil of sound signal, the digital signal that the little motor digital microphone of MEMS collected is converted into the A2B signal through the A2B conversion chip that is located on the microphone PCB board to through the twisted-pair line with A2B signal transmission to the car machine, handle the signal through the DSP chip in the car machine.
The utility model discloses following beneficial effect has: the utility model discloses on-vehicle array microphone adopts the little motor digital microphone of three MEMS, compares traditional ECM microphone, and the MEMS microphone possesses the advantage of high sensitivity, high uniformity, high noise immunity nature. The signal transmission adopts the connection scheme of A2B, can be convenient a plurality of audio equipment of connection to reduce pencil complexity and weight in a large number, the cost is reduced and signal interference killing feature is strong, transmission distance is long, signal delay is little, scalability is stronger.
Description of the drawings:
fig. 1 is a structural diagram of the on-vehicle array microphone of the present invention.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings.
The utility model discloses on-vehicle array microphone is including being the little motor digital microphone 1 of three MEMS that triangle-shaped array arranged, digital silicon microphone among the little motor digital microphone of three MEMS is integrated to on microphone PCB board 2, place the microphone PCB board in the roof lamp, collect sound signal through roof lamp trompil department, and the digital signal who collects little motor digital microphone of MEMS through A2B conversion chip changes the A2B signal into, and with A2B signal transmission to the car machine through the twisted-pair line, handle the signal through the DSP chip in the car machine.
The utility model discloses on-vehicle array microphone adopts the little motor digital microphone of three MEMS, compares traditional ECM microphone, and the MEMS microphone possesses the advantage of high sensitivity, high uniformity, high noise immunity nature. The signal transmission adopts the connection scheme of A2B, can be convenient a plurality of audio equipment of connection to reduce pencil complexity and weight in a large number, the cost is reduced and signal interference killing feature is strong, transmission distance is long, signal delay is little, scalability is stronger.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (1)
1. A vehicle-mounted array microphone is characterized in that: the digital signal collected by the MEMS micro-motor digital microphone (1) is converted into an A2B signal through an A2B conversion chip (3) positioned on the microphone PCB (2), the A2B signal is transmitted to a vehicle machine through a twisted pair, and the signal is processed through a DSP chip in the vehicle machine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201921978572.1U CN210958793U (en) | 2019-11-15 | 2019-11-15 | Vehicle-mounted array microphone |
Applications Claiming Priority (1)
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CN201921978572.1U CN210958793U (en) | 2019-11-15 | 2019-11-15 | Vehicle-mounted array microphone |
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CN210958793U true CN210958793U (en) | 2020-07-07 |
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CN201921978572.1U Active CN210958793U (en) | 2019-11-15 | 2019-11-15 | Vehicle-mounted array microphone |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111918213A (en) * | 2020-07-13 | 2020-11-10 | 江苏开沃汽车有限公司 | Intelligent vehicle-mounted interconnection system |
WO2022078791A1 (en) * | 2020-10-13 | 2022-04-21 | Ask Industries Societa' Per Azioni | Microphone unit, microphone meta-array and network with microphone meta-array |
-
2019
- 2019-11-15 CN CN201921978572.1U patent/CN210958793U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111918213A (en) * | 2020-07-13 | 2020-11-10 | 江苏开沃汽车有限公司 | Intelligent vehicle-mounted interconnection system |
WO2022078791A1 (en) * | 2020-10-13 | 2022-04-21 | Ask Industries Societa' Per Azioni | Microphone unit, microphone meta-array and network with microphone meta-array |
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