Background sound noise reduction device

Abstract

The utility model relates to the technical field of audio processing. The background sound noise reduction device comprises a shell, a collection assembly and a noise reduction assembly, the collection assembly is arranged on the shell, the noise reduction assembly is arranged in the shell, the noise reduction assembly is in communication connection with the collection assembly, the shell is provided with a function interface, and the function interface is connected with the noise reduction assembly; wherein the acquisition assembly is used for acquiring sound wave signals. Through the acquisition assembly and the noise reduction assembly, background noise in a complex and changeable environment can be effectively isolated, and the definition and purity of live broadcast audio can be remarkably improved, so that the problems that the quality of the live broadcast audio is reduced and the watching experience of audiences is affected due to the fact that existing microphone equipment is difficult to effectively isolate the environment noise are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to audio processing technical field, specifically, relate to a background sound noise reduction device. BACKGROUND

[0002] In the current multimedia live field, along with the continuous progress of technology and the increasing requirement of user to live quality, how to ensure the intelligibility and purity of audio signal in the complex and changeable environment has become a problem to be solved. Especially in outdoor live, on-the-spot interview or any occasion containing background noise, the traditional microphone equipment is often difficult to effectively isolate environmental noise, resulting in the live audio quality being greatly discounted, affecting the viewing experience of audience.

[0003] In order to meet the demand of user in noisy environment to carry out high quality live, there are various noise reduction technologies in the market, but these technologies often have limitations. For example, although some hardware-based noise reduction schemes can reduce noise to a certain extent, they lack flexibility and intelligence and cannot automatically adjust the noise reduction strategy according to the specific scene, while other noise reduction methods relying on software algorithm have high flexibility, but often lack real-time performance and processing efficiency, especially when running on resource-limited mobile devices, which may affect the smoothness and stability of live. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a background sound noise reduction device, which aims at solving the problem that the existing microphone equipment is difficult to effectively isolate environmental noise, resulting in the decline of live audio quality and affecting the viewing experience of audience.

[0005] The utility model realizes the following technical scheme:

[0006] A background sound noise reduction device, comprising: a shell, an acquisition assembly and a noise reduction assembly, the acquisition assembly is arranged on the shell, the noise reduction assembly is arranged in the shell, the noise reduction assembly is in communication connection with the acquisition assembly, a functional interface is arranged on the shell, and the functional interface is connected with the noise reduction assembly; wherein the acquisition assembly is used for acquiring sound wave signal.

[0007] Optionally, the functional interface comprises a first interface and a second interface, the first interface and the second interface are connected with the noise reduction assembly; wherein the first interface is used for data transmission with external equipment through data line; and the second interface is used for connecting with external power supply.

[0008] Optionally, the first interface and the second interface are both Type-C interface.

[0009] Optionally, a plurality of through holes are arranged on the acquisition assembly, and the plurality of through holes are uniformly distributed on the acquisition assembly.

[0010] Optionally, the shell and the collection assembly are connected to form a flat columnar structure.

[0011] Optionally, the collection assembly is arranged at the top of the shell.

[0012] Optionally, the noise reduction assembly comprises a noise reduction unit, a clock unit, a power supply unit, an audio control unit and a power management unit, the collection assembly is connected with the noise reduction unit, the noise reduction unit is connected with the clock unit and the audio control unit respectively, the audio control unit is connected with the power management unit, and the power supply unit is connected with the power management unit; wherein the noise reduction unit is used for processing the received sound wave signal according to the preset noise reduction program and performing the noise reduction operation; the noise reduction unit is used for performing noise reduction processing on the received sound wave signal according to the preset noise reduction program; the clock unit is used for providing a time reference; the power supply unit is used for supplying power to each power-consuming unit; the audio control unit is used for receiving the audio signal processed by the noise reduction unit, outputting to an external device, and being responsible for format conversion and volume adjustment of the audio signal; and the power management unit is used for monitoring the state of the power supply unit and managing power distribution.

[0013] Optionally, an indication assembly is arranged on the shell, and the indication assembly is connected with the collection assembly and the noise reduction assembly respectively; wherein the indication assembly is used for reflecting the working state of the collection assembly and the noise reduction assembly.

[0014] Optionally, a control assembly is arranged on the shell, and the control assembly is connected with the collection assembly and the noise reduction assembly respectively.

[0015] Optionally, a power supply is arranged in the shell, and the power supply is connected with the collection assembly, the noise reduction assembly and the functional interface respectively.

[0016] The technical scheme of the utility model has at least the following advantages and beneficial effects:

[0017] Significantly improve the audio quality: through the collection assembly and the noise reduction assembly, the background noise in the complex and changeable environment can be effectively isolated, the clarity and purity of the live audio are significantly improved, and the viewing experience of the audience is greatly improved.

[0018] Convenient integration and expansion: through the functional interface on the shell, other live devices or systems can be conveniently integrated to realize the expansion and upgrading of functions, and meet the diversified needs of users.

[0019] Enhancing user experience: By improving audio quality, enhancing the flexibility and intelligence of noise reduction technology, optimizing real-time performance and processing efficiency, and facilitating integration and expansion, etc., it can provide users with a more high-quality, convenient and efficient live streaming experience. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the background noise reduction device of the embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the top view structure of the background noise reduction device of the embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the bottom view structure of the background noise reduction device of the embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the front view structure of the background noise reduction device of the embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the rear view structure of the background noise reduction device of the embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the circuit structure of the clock unit in the background noise reduction device of the embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of the circuit structure of the power supply unit in the background noise reduction device of the embodiment of the utility model;

[0027] Figure 8 It is a schematic diagram of the circuit structure of the audio control unit in the background noise reduction device of the embodiment of the utility model;

[0028] Figure 9 It is a schematic diagram of the circuit structure of the power management unit in the background noise reduction device of the embodiment of the utility model;

[0029] Icon: 1 - shell, 101 - first interface, 102 - second interface, 103 - control component, 2 - acquisition component, 3 - indication component. DETAILED DESCRIPTION

[0030] The following is a specific embodiment combined with the drawings.

[0031] Reference Figure 1 , Figure 2A background noise reduction device, comprising: a shell 1, an acquisition assembly 2 and a noise reduction assembly, the acquisition assembly 2 is arranged on the shell 1, the noise reduction assembly is arranged in the shell 1, the noise reduction assembly is connected with the acquisition assembly 2 in communication, the shell 1 is provided with a function interface, the function interface is connected with the noise reduction assembly; wherein the acquisition assembly 2 is used for collecting sound wave signals.

[0032] In some embodiments, the shell 1 is provided with an indication assembly 3, the indication assembly 3 is connected with the acquisition assembly 2 and the noise reduction assembly respectively; wherein the indication assembly 3 is used for reflecting the working state of the acquisition assembly 2 and the noise reduction assembly. The indication assembly 3 can adopt various types of indicator lights or display devices, including but not limited to:

[0033] LED indicator light: different colors of LED lights (such as red, green, blue, etc.) or different flashing modes (such as constant light, flashing, etc.) are used to represent different working states;

[0034] LCD / OLED display screen: it can provide more abundant information display, such as specific noise reduction level, remaining power, error information, etc.

[0035] The mounting hole of the indication assembly 3 is opened at a proper position (such as the top, side or bottom) of the shell 1; the indication assembly 3 is connected with the noise reduction assembly (especially the power management unit or the audio control unit) through wires, so as to ensure that the working state information can be accurately received and reflected; the control program is written according to the needs, to control the on-off and flashing mode of the indication assembly 3.

[0036] In some embodiments, refer to Figure 3The control assembly 103 is arranged on the shell 1 and connected with the collection assembly 2 and the noise reduction assembly respectively. The control assembly 103 can be designed as a series of buttons, knobs or touch screens and integrated on the surface of the shell 1 for direct operation by the user. If a touch screen is adopted, it can be arranged on the surface of the shell 1 adjacent to or integrated with the collection assembly 2 for easy access by the user without disturbing the placement of the live streaming device. The real-time audio waveform can be displayed on the touch screen to help the user intuitively understand the current audio state; an intuitive graphical interface is provided for selecting the noise reduction mode, adjusting the volume and configuring other settings; the continuous adjustment of the volume and the noise reduction level is supported through sliding operation, providing higher flexibility and precision. If the control assembly 103 adopts functional buttons, the entire device can be started or stopped through the on-off button; different noise reduction mode options such as "automatic noise reduction", "strong noise reduction" and "weak noise reduction" can be provided through the noise reduction mode selection button to adapt to different live streaming environments and user needs; the volume can be adjusted by the user as needed through the volume adjustment button to ensure the appropriateness and comfort of the audio output; the menu button is used to enter the detailed settings menu for configuring advanced noise reduction parameters, adjusting audio effects and updating software.

[0037] In some embodiments, with reference to Figure 4 、 Figure 5 The functional interface includes a first interface 101 and a second interface 102, both of which are connected with the noise reduction assembly; the first interface 101 is used for data transmission with external devices through a data line; and the second interface 102 is used for connection with an external power supply. Both the first interface 101 and the second interface 102 can be Type-C interfaces.

[0038] In some embodiments, a plurality of through holes are arranged on the collection assembly 2 and uniformly distributed thereon. The number of through holes can be flexibly designed according to the size of the collection assembly and the noise reduction demand; the through holes should be uniformly distributed on the collection assembly to ensure that sound wave signals from different directions can be captured, and the uniform distribution design helps to reduce the blind area of signal collection and improve the noise reduction effect. The shape of the through holes can be circular, square or other regular shapes. Surface treatment such as spraying acoustic coating or adding damping layer can be performed to help reduce the reflection and scattering of sound waves on the surface of the through holes and improve the collection efficiency of sound wave signals. An effective sound wave channel should be formed between the through holes and the noise reduction assembly to ensure that the sound wave signals can be smoothly transmitted to the noise reduction assembly for processing.

[0039] In some embodiments, the shell 1 is connected with the collection assembly 2 to form a flat columnar structure. The collection assembly 2 can be arranged at the top of the shell 1. The design of the flat columnar structure makes the device more comfortable to use in hand, and is not easy to slip off, while reducing the occupation space of the user's hand or desktop; placing the collection assembly 2 (usually containing a microphone) at the top of the shell 1 can maximize the reception of sound wave signals from the front, while reducing noise interference from the sides and back, improving the accuracy and clarity of audio collection; the flat columnar structure not only looks elegant and generous, but also is convenient to carry and store, and is suitable for various live broadcast, interview and other application scenarios. The shell 1 can be made of lightweight but strong materials (such as aluminum alloy or high-strength plastic) to ensure the durability and portability of the device.

[0040] In some embodiments, the noise reduction assembly includes a noise reduction unit, a clock unit, a power supply unit, an audio control unit and a power management unit, the collection assembly 2 is connected with the noise reduction unit, the noise reduction unit is connected with the clock unit and the audio control unit respectively, the audio control unit is connected with the power management unit, and the power supply unit is connected with the power management unit; wherein the noise reduction unit is used to process the received sound wave signals according to the preset noise reduction program, and perform noise reduction operation; the noise reduction unit is used to perform noise reduction processing on the received sound wave signals according to the preset noise reduction program; the clock unit is used to provide a time reference; the power supply unit is used to supply power to each power-consuming unit; the audio control unit is used to receive the audio signal processed by the noise reduction unit, output to an external device, and is responsible for format conversion and volume adjustment of the audio signal; the power management unit is used to monitor the state of the power supply unit and manage power distribution.

[0041] In some embodiments, the circuit of the clock unit is as shown in Figure 6 wherein X_IN represents a clock input (Clock Input) port, X_OUT represents a clock output (Clock Output) port; C25 and C26 both represent capacitors (Capacitor), and the capacitance of C25 and C26 is 10PF; R12 and R13 represent resistors (Resistor), and the resistance of R13 resistor is 330R; the frequency of the clock signal is 12MHz, + / -10ppm represents that there is a deviation of plus or minus 10ppm.

[0042] In some embodiments, the circuit of the power supply unit is as shown in Figure 7As shown in the figure, wherein, ME6232C33M5G represents the model of low dropout linear regulator, which is used to reduce the input voltage 3.9V to 3.3V output, so as to supply power to the corresponding components of the circuit; VIN represents the external input voltage, which is 3.9V; CE represents the enable input terminal of the low dropout linear regulator, when this pin inputs high level, the low dropout linear regulator is in working state, ensuring the normal operation of the low dropout linear regulator; VOUT represents the power output terminal, which outputs the reduced voltage 3.3V to the main control pin; NC represents the normally closed pin; VSS represents the ground pin. The input voltage is reduced by the low dropout linear regulator to supply power to each power unit, meeting the power demand of each power unit.

[0043] In some embodiments, the circuit of the audio control unit is as shown in the figure. Figure 8 As shown in the figure, wherein, AI NOP represents audio input; AINON represents audio input / output; GH1.25-2P represents analog switch circuit, which can realize different audio effects by switching different pins to realize different audio links, and can transmit the audio input to the noise reduction unit by switching CN1 to 2 to realize noise reduction effect and eliminate background noise.

[0044] In some embodiments, the circuit of the power management unit is as shown in the figure. Figure 9 As shown in the figure, wherein, XT3427 represents the power management chip; VIN represents the external input voltage; LX represents the external inductance pin, which is used to connect external inductance to ensure stable output of 1.1V voltage; EN represents the enable pin of the power management chip, which activates the pin, and can output 1.1V voltage under the condition of external power input; FB represents the feedback voltage pin, which feeds back the signal to the power management chip when the output voltage is 1.1V, and can feedback the current voltage when the voltage is not 1.1V. The input 3.9V voltage is reduced to 1.1V, which realizes the power supply of 1.1V voltage to the main control chip of the noise reduction unit. The main control receives 1.1V power supply, starts the corresponding pin of the main control, and drives the main control program of the noise reduction unit to realize the noise reduction function.

[0045] In some embodiments, a power source is provided within the housing 1, which is connected to the acquisition component 2, the noise reduction component, and the functional interface, respectively. It is more appropriate to choose a rechargeable battery (such as a lithium-ion battery) as the main power source. In order to deal with unexpected situations or prolong the use time, a spare battery slot or an additional spare battery can be designed. In this way, when the main battery runs out of power, the battery can be quickly replaced to ensure the continuity of live broadcast or interview. The power management unit is responsible for monitoring the battery power state, managing the charging process, and distributing power to various power-consuming units (such as noise reduction units, clock units, audio control units, etc.). By precisely controlling power distribution, battery use efficiency can be optimized and battery life can be extended. In order to protect the battery from damage such as overcharging, over-discharging or short circuit, the power management system should contain a charging protection function. When the battery is fully charged, the system will automatically cut off the charging current; when the battery power is too low, the system will issue a warning and limit the use of some functions to protect the battery from damage.

Claims

1. A background sound noise reduction device, characterized by, The shell (1), the acquisition assembly (2) and the noise reduction assembly, the acquisition assembly (2) is arranged on the shell (1), the noise reduction assembly is arranged in the shell (1), the noise reduction assembly is connected with the acquisition assembly (2), the shell (1) is provided with functional interface, the functional interface is connected with the noise reduction assembly; The functional interface includes a first interface (101) and a second interface (102), the first interface (101) and the second interface (102) are connected with the noise reduction assembly;Wherein, the first interface (101) is used for data transmission with external equipment through data line;The second interface (102) is used for connecting with external power supply; The noise reduction assembly includes: noise reduction unit, clock unit, power supply unit, audio control unit and power management unit, the acquisition assembly (2) is connected with the noise reduction unit, the noise reduction unit is connected with the clock unit and the audio control unit respectively, the audio control unit is connected with the power management unit, and the power supply unit is connected with the power management unit;Wherein, the noise reduction unit is used for processing the received sound wave signal according to the preset noise reduction program, and executing noise reduction operation;The noise reduction unit is used for noise reduction processing of the received sound wave signal according to the preset noise reduction program;The clock unit is used to provide time reference;The power supply unit is used for power supply to each power unit;The audio control unit is used for receiving the audio signal processed by the noise reduction unit, outputting to external equipment, and being responsible for format conversion and volume adjustment of audio signal;The power management unit is used for monitoring the state of power supply unit and managing power distribution; Wherein, the acquisition assembly (2) is used for collecting sound wave signal. The first interface (101) and the second interface (102) are both Type-C interfaces.

2. The background noise reducing apparatus of claim 1, wherein, The acquisition assembly (2) is provided with a plurality of through holes, and the plurality of through holes are uniformly distributed on the acquisition assembly (2).

3. The background noise reducing apparatus of claim 1, wherein, The shell (1) and the acquisition assembly (2) are connected to form a flat columnar structure.

4. The background noise reducing apparatus of claim 1, wherein, The acquisition assembly (2) is arranged on the top of the shell (1).

5. The background noise reducing apparatus of claim 4, wherein, The shell (1) is provided with an indication assembly (3), and the indication assembly (3) is connected with the acquisition assembly (2) and the noise reduction assembly respectively;Wherein, the indication assembly (3) is used for reflecting the working state of the acquisition assembly (2) and the noise reduction assembly.

6. The background noise reducing apparatus of claim 1, wherein, The shell (1) is provided with a control assembly (103), and the control assembly (103) is connected with the acquisition assembly (2) and the noise reduction assembly respectively.

7. The background noise reducing apparatus of claim 1, wherein, The shell (1) is provided with a power supply, and the power supply is connected with the acquisition assembly (2), the noise reduction assembly and the functional interface respectively.

8. The background noise reducing apparatus of any one of claims 1-7, wherein, ​

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