CN217428342U - Voice noise reduction module for automobile central control navigation system - Google Patents
Voice noise reduction module for automobile central control navigation system Download PDFInfo
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- CN217428342U CN217428342U CN202220951991.1U CN202220951991U CN217428342U CN 217428342 U CN217428342 U CN 217428342U CN 202220951991 U CN202220951991 U CN 202220951991U CN 217428342 U CN217428342 U CN 217428342U
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Abstract
The embodiment of the utility model discloses a voice noise reduction module for a central control navigation system of an automobile, which comprises a circuit board, wherein a noise reduction processing circuit, a power supply management circuit, a pad interface, a signal input circuit and a signal output circuit are integrated on the circuit board, and the noise reduction processing circuit is electrically connected with the power supply management circuit and the signal input circuit and the signal output circuit; the noise reduction processing circuit is electrically connected with the pad interface and is externally connected with a CLOCK circuit and a system main control circuit of the automobile central control navigation system through the pad interface; the signal input and output circuit is electrically connected with the pad interface and is externally connected with a system main control circuit and a power amplifier circuit of the automobile central control navigation system through the pad interface. The utility model discloses can replace the software pronunciation noise reduction function on the traditional bluetooth module, increase speech recognition rate on satisfying voice awakening, speech recognition's demand, promote user experience.
Description
Technical Field
The utility model relates to an automotive electronics field especially relates to a module of making an uproar falls in pronunciation for accuse navigation in car.
Background
With the rapid development of artificial intelligence, the car networking architecture in the car field is a trend, the car central control navigation voice demand is increasing day by day, however, the car environment is usually relatively complex, the noise sources are many, including the sound generated by the car engine sound, wind cutting sound, car air conditioning wind sound and other machinery, even the sound emitted by the car central control navigation itself, and the like, these signal sources not only can cause certain influence on the general voice call, but also can easily cause the reduction of the recognition rate for the voice recognition part, thereby making the use experience of the car voice somewhat unsatisfactory.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical problem that will solve provides a module of making an uproar falls in pronunciation for controlling navigation in car to replace the function of making an uproar falls in software pronunciation on the traditional bluetooth module, increase speech recognition rate on satisfying pronunciation awaken up, speech recognition's demand, promote user experience.
In order to solve the technical problem, an embodiment of the present invention provides a voice noise reduction module for a central control navigation system of an automobile, where the central control navigation system of the automobile includes a CLOCK circuit, a system main control circuit, and a power amplifier circuit, the voice noise reduction module includes a circuit board, a noise reduction processing circuit, a power supply management circuit, a pad interface, and a signal input and output circuit are integrated on the circuit board, and the noise reduction processing circuit is electrically connected with the power supply management circuit and the signal input and output circuit; the noise reduction processing circuit is electrically connected with the pad interface and is externally connected with a CLOCK circuit and a system main control circuit of the automobile central control navigation system through the pad interface; the signal input and output circuit is electrically connected with the pad interface and is externally connected with a system main control circuit and a power amplifier circuit of the automobile central control navigation system through the pad interface.
Furthermore, the noise reduction processing circuit adopts an FM1388 digital signal processing chip.
Further, the power supply management circuit comprises two outputs of 1.8V and 3.3V.
Furthermore, the signal input and output circuit is a DSP chip circuit.
The utility model has the advantages that: the utility model can replace the software voice noise reduction function on the traditional Bluetooth module, increase the voice recognition rate on meeting the requirements of voice awakening and voice recognition, and improve the user experience; the utility model discloses simple structure when simplifying car central control navigation system structure, the production equipment of car central control navigation system mainboard of being more convenient for.
Drawings
Fig. 1 is a schematic structural diagram of a voice noise reduction module for a central control navigation system of an automobile according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of a signal input/output circuit according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of a noise reduction processing circuit according to an embodiment of the present invention.
Fig. 4 is a circuit diagram of a power supply management circuit according to an embodiment of the present invention.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 4, a voice noise reduction module for a central control navigation system of an automobile according to an embodiment of the present invention includes a circuit board, and a noise reduction processing circuit, a power supply management circuit, a pad interface, and a signal input and output circuit are integrated on the circuit board.
The automobile central control navigation system comprises a CLOCK circuit, a system main control circuit and a power amplifier circuit. The noise reduction processing circuit is electrically connected with the power supply management circuit and the signal input and output circuit. The noise reduction processing circuit is electrically connected with the pad interface and is externally connected with a CLOCK circuit and a system main control circuit of the automobile central control navigation system through the pad interface. The signal input and output circuit is electrically connected with the pad interface and is externally connected with a system main control circuit and a power amplifier circuit of the automobile central control navigation system through the pad interface. The pad interface is preferably a postage stamp hole patch pad interface.
In one embodiment, the noise reduction processing circuit uses an FM1388 digital signal processing chip. The utility model discloses a single highly integrated digital signal processing chip FM1388, chip FM1388 accomplish and handle the simulation or the digital microphone speech signal of input to realize making an uproar, echo cancellation, remote pickup, functions such as sound source discernment.
As one implementation, the power supply management circuit comprises two outputs of 1.8V and 3.3V.
In one embodiment, the signal input and output circuit is a DSP chip circuit.
The utility model discloses a theory of operation does: as shown in the architecture block diagram of fig. 1, after the power supply management circuit and the main control circuit of the central navigation system of the vehicle operate normally, the main control of the central navigation system of the vehicle initializes the noise reduction module chip through the SPI/I2C interface, and each system circuit operates; the voice signal is transmitted to a noise reduction processing circuit through a microphone to be subjected to noise reduction processing, analog stereo is output to system main control processing, digital audio I2S is output, is subjected to DSP processing EQ adjustment and then is converted into high-quality audio 5.2 sound channel analog audio to be output, is subjected to second-stage amplification through an operational amplifier processing circuit, is output to a main board power amplifier circuit of a central control navigation system of the automobile to be subjected to third-stage amplification output, and finally a loudspeaker is pushed to sound; at the same time, the other path of digital audio I2S is output to the noise reduction module circuit as a sample of the noise reduction module audio feedback.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A voice noise reduction module for a central control navigation system of an automobile comprises a CLOCK circuit, a system main control circuit and a power amplifier circuit, and is characterized in that the voice noise reduction module comprises a circuit board, wherein a noise reduction processing circuit, a power supply management circuit, a pad interface, a signal input circuit and a signal output circuit are integrated on the circuit board, and the noise reduction processing circuit is electrically connected with the power supply management circuit and the signal input circuit and the signal output circuit; the noise reduction processing circuit is electrically connected with the pad interface and is externally connected with a CLOCK circuit and a system main control circuit of the automobile central control navigation system through the pad interface; the signal input and output circuit is electrically connected with the pad interface and is externally connected with a system main control circuit and a power amplifier circuit of the automobile central control navigation system through the pad interface.
2. The voice noise reduction module for a central navigation system of an automobile according to claim 1, wherein the noise reduction processing circuit employs an FM1388 digital signal processing chip.
3. The voice noise reduction module for a central control navigation system of an automobile according to claim 2, wherein the power supply management circuit comprises two outputs of 1.8V and 3.3V.
4. The voice noise reduction module for a central navigation system of an automobile according to claim 1, wherein the signal input and output circuit is a DSP chip circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220951991.1U CN217428342U (en) | 2022-04-24 | 2022-04-24 | Voice noise reduction module for automobile central control navigation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220951991.1U CN217428342U (en) | 2022-04-24 | 2022-04-24 | Voice noise reduction module for automobile central control navigation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217428342U true CN217428342U (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220951991.1U Active CN217428342U (en) | 2022-04-24 | 2022-04-24 | Voice noise reduction module for automobile central control navigation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217428342U (en) |
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2022
- 2022-04-24 CN CN202220951991.1U patent/CN217428342U/en active Active
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