Interphone with built-in noise reduction function

Abstract

The utility model discloses a built-in noise reduction interphone, which comprises a printed circuit board (PCB), a micro-control module, an audio acquisition module, a noise reduction processing module and a communication module, the micro-control module, the audio acquisition module, the noise reduction processing module and the communication module are integrated on the PCB, and the micro-control module is electrically connected with the audio acquisition module, the noise reduction processing module and the communication module respectively. The micro-control module controls audio data collected by the audio collection module, the audio data is processed by the noise reduction processing module and then is transmitted by the communication module, and the noise reduction processing module sequentially comprises a signal amplification unit, a band-pass filtering unit, an A / D conversion unit, a DSP processing unit, a D / A conversion unit and an audio amplification unit.

Description

Technical Field

[0001] The utility model relates to the technical field of intercoms, in particular to an intercom with built-in noise reduction. Background Art

[0002] With the development of science and technology, walkie-talkies have become an indispensable communication tool in people's lives and work. However, in actual use, traditional walkie-talkies are often interfered by various environmental noises, resulting in reduced call quality and even affecting the smooth progress of communication. Utility Model Content

[0003] The utility model aims to provide an intercom with built-in noise reduction to solve the above problems.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A walkie-talkie with built-in noise reduction comprises a PCB board, a microcontroller module integrated on the PCB board, an audio acquisition module, a noise reduction processing module and a communication module, wherein the microcontroller module is electrically connected to the audio acquisition module, the noise reduction processing module and the communication module respectively, the microcontroller module controls the audio data collected by the audio acquisition module, the audio data is processed by the noise reduction processing module and then transmitted by the communication module, and the noise reduction processing module comprises a signal amplification unit, a bandpass filtering unit, an A / D conversion unit, a DSP processing unit, a D / A conversion unit and an audio amplification unit in sequence.

[0006] Preferably, the communication module includes a BLE Bluetooth unit and an RF radio frequency transmission unit.

[0007] Preferably, it also includes a power module, and the power module is connected to a TYPE-C charging interface.

[0008] Preferably, the DSP processing unit adopts the F280045PMS noise reduction processing chip.

[0009] Preferably, the audio acquisition module adopts AD9243ASZRL chip.

[0010] Preferably, the microcontroller module adopts a single-chip processing chip.

[0011] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0012] The utility model provides an intercom with built-in noise reduction, which solves the problem of collecting environmental noise when communicating in a noisy environment, and performs a series of unit noise reduction processing through a noise reduction processing module, thereby effectively improving the communication quality, reducing the interference of environmental noise on communication, and meeting people's needs for efficient and high-quality communication tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural block diagram of the utility model. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0015] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] Example

[0017] Please refer to Figure 1 As shown, the utility model discloses a walkie-talkie with built-in noise reduction, including a PCB board, a micro-control module integrated on the PCB board, an audio acquisition module, a noise reduction processing module and a communication module, the micro-control module is electrically connected to the audio acquisition module, the noise reduction processing module and the communication module respectively, the micro-control module controls the audio data collected by the audio acquisition module, the noise reduction processing module processes the audio data and then transmits the data through the communication module, the noise reduction processing module sequentially includes a signal amplification unit, a bandpass filtering unit, an A / D conversion unit, a DSP processing unit, a D / A conversion unit and an audio amplification unit.

[0018] The communication module includes a BLE Bluetooth unit and an RF radio frequency transmission unit. The intercom can freely choose one of the BLE Bluetooth unit and the RF radio frequency transmission unit to transmit data to other intercoms.

[0019] It also includes a power module, which is connected to a TYPE-C charging interface for fast charging of the power supply.

[0020] The DSP processing unit uses the F280045PMS noise reduction processing chip. The audio acquisition module uses the AD9243ASZRL chip. The microcontroller module uses a single-chip processing chip.

[0021] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A walkie-talkie with built-in noise reduction, characterized in that: It includes a PCB board, a micro-control module integrated on the PCB board, an audio acquisition module, a noise reduction processing module and a communication module. The micro-control module is electrically connected to the audio acquisition module, the noise reduction processing module and the communication module respectively. The micro-control module controls the audio data collected by the audio acquisition module, which is processed by the noise reduction processing module and then transmitted by the communication module. The noise reduction processing module includes a signal amplification unit, a bandpass filtering unit, an A / D conversion unit, a DSP processing unit, a D / A conversion unit and an audio amplification unit in sequence.

2. A walkie-talkie with built-in noise reduction as claimed in claim 1, characterized in that: The communication module includes a BLE bluetooth unit and an RF radio frequency transmission unit.

3. The intercom with built-in noise reduction as claimed in claim 1, characterized in that: It also includes a power module, which is connected to a TYPE-C charging interface.

4. The intercom with built-in noise reduction as claimed in claim 1, characterized in that: The DSP processing unit adopts the F280045PMS noise reduction processing chip.

5. The intercom with built-in noise reduction as claimed in claim 1, characterized in that: The audio acquisition module adopts AD9243ASZRL chip.

6. The intercom with built-in noise reduction as claimed in claim 1, characterized in that: The microcontrol module adopts a single-chip processing chip.

Images