Audio noise reduction device and method

Abstract

The invention relates to the technical field of audio processing, in particular to an audio noise reduction device and method.The audio noise reduction device comprises an audio equipment body, an input port, an output port and a fan body, and a noise reduction layer is arranged on the surface of the inner wall of the audio equipment body; a receiving module, a scene detection algorithm module and a filtering noise reduction module are arranged in the audio equipment body. Noise and vibration generated by a cooling fan of the device can be absorbed, so that the influence of the noise generated by the cooling fan on audio is reduced, meanwhile, the device can also recognize a noise scene where an audio signal is located, perform noise reduction processing on the audio signal and compensate the audio signal in the filtering and noise reduction process, and the noise reduction effect of the audio signal is improved. Therefore, the quality of the audio signal after noise reduction is improved, the audio signal output by the audio equipment is prevented from being noisy or distorted, and normal operation of the audio equipment is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of audio processing, and in particular to an audio noise reduction device and method. Background Art

[0002] Audio equipment is a general term for audio input and output devices, covering many types of products, such as amplifiers, speakers, multimedia consoles, digital mixers, audio sampling cards, synthesizers, mid- and high-frequency speakers, microphones, sound cards in PCs, headphones, and other peripheral audio equipment such as professional microphone series, headphones, and sound amplification systems. Sound quality is an important criterion for judging the quality of audio equipment, which is determined by indicators such as signal-to-noise ratio, sampling bit number, sampling frequency, and total harmonic distortion.

[0003] However, audio devices have noise problems during use. For example, the power amplifier itself generates noise, there may be noise in the audio signal, and the vibration of the cooling fan may also generate noise. These noises will cause the output audio to be noisy or distorted, seriously affecting the operation of the audio device and reducing the user experience and performance of the audio device. Summary of the invention

[0004] The object of the present invention is to provide an audio noise reduction device and method to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an audio noise reduction device and method, comprising an audio device body, an input port, an output port and a fan body, the surface of the inner wall of the audio device body is provided with a noise reduction layer, the interior of the audio device body is also provided with a receiving module, a scene detection algorithm module and a filtering noise reduction module, a signal processing module is provided on the left side of the filtering noise reduction module, an audio power amplifier module is provided on the front side of the signal processing module, air inlet channels are provided at both the front and rear locations of the left side of the audio device body, and the fan body is fixedly arranged inside the air inlet channel.

[0006] Preferably, sound absorbing panels and fixing mechanisms are provided on both sides of the air inlet channel, and the interior of the inner wall of the air inlet channel is filled with a sound absorbing layer.

[0007] Preferably, the fixing mechanism comprises a fixing bolt, a through slot, a fixing block and a threaded slot, the through slot is opened through the surface of the sound absorbing board, the fixing block is fixedly arranged inside the air inlet channel, and the threaded slot is opened on the surface of the fixing block.

[0008] Preferably, the inner diameter of the through groove is larger than the outer diameter of the threaded end of the fixing bolt, and the total length of the through groove and the threaded groove is larger than the length of the fixing bolt.

[0009] Preferably, a heat dissipation hole is formed through the surface of the sound absorbing plate, and the inner diameter of the heat dissipation hole is smaller than the inner diameter of the through groove.

[0010] Preferably, the sound absorbing board is made of polyester fiber sound absorbing material, and the sound absorbing layer is made of sound-absorbing cotton.

[0011] Preferably, a plurality of noise reduction holes are formed through the surface of the left side of the audio device body, and the noise reduction holes extend to the surface of the noise reduction layer.

[0012] Preferably, a deletion module is arranged on the front side of the audio power amplifier module, and a storage module is arranged on the left side of the deletion module.

[0013] Preferably, the input port is unidirectionally electrically connected to the input end of the receiving module, the output end of the receiving module is unidirectionally electrically connected to the input end of the scene detection algorithm module, the output end of the scene detection algorithm module is unidirectionally electrically connected to the input end of the filtering and noise reduction module, the output end of the filtering and noise reduction module is unidirectionally electrically connected to the input end of the signal processing module, the output end of the signal processing module is unidirectionally electrically connected to the input end of the audio power amplifier module, the output end of the audio power amplifier module is unidirectionally electrically connected to the output port, the output end of the deletion module is unidirectionally electrically connected to the input end of the storage module, and the storage module and the signal processing module are bidirectionally and unidirectionally electrically connected.

[0014] A noise reduction method for an audio device, the method comprising the following steps:

[0015] S1. Collect audio data in different noise scenes through an audio generation algorithm, convert the audio data into an audio signal through a data receiving module, mark the scene of the audio signal to be processed and input it into an algorithm model for training to obtain a scene algorithm model, and input the scene algorithm into a scene detection algorithm module;

[0016] S2, constructing an audio denoising model, directly inputting the original audio data into the filtering denoising module to obtain a denoised data group A, then inputting the audio data under different scene noises into the filtering denoising module to obtain a denoised data group B, constructing an audio loss function according to the denoised data group A and the denoised data group B, adjusting the parameters of the audio denoising model according to the loss function, and inputting the adjusted audio denoising model into the filtering denoising module;

[0017] S3, during the use of the device, audio data is input from the input port, and then the audio signal is converted into an audio signal by the receiving module and transmitted to the scene detection algorithm module. The scene detection algorithm module detects the noise scene, and then the filtering and noise reduction module filters and reduces the noise of the audio signal, and compensates for the signal lost in the noise reduction process. Then, the audio signal is converted by the signal processing module and amplified by the audio power amplifier module, and then output from the output port;

[0018] S4. During the operation of the audio device, the fan body dissipates heat, and the vibration and noise it generates are transmitted to the air inlet channel and the air inside the air inlet channel, and are absorbed by the sound-absorbing layer. The sound-absorbing panel can absorb the vibration and noise transmitted in the air, thereby reducing the impact of the vibration and noise of the fan body on the audio device.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention can absorb the noise and vibration generated by its own cooling fan, thereby reducing the impact of the noise generated by the cooling fan on the audio.

[0021] 2. The present invention can identify the noise scene where the audio signal is located, perform noise reduction processing on the audio signal, and compensate the audio signal during the filtering and noise reduction process, thereby improving the quality of the audio signal after noise reduction, avoiding the audio signal output by the audio device from being noisy or distorted, and facilitating the normal operation of the audio device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the cross-sectional structure of the audio device body of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the fan body of the present invention;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the air inlet channel in the present invention;

[0025] Figure 4 This is a schematic diagram of the disassembled sound absorbing panel and the air inlet channel in the present invention;

[0026] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the air inlet channel in the present invention;

[0027] Figure 6 It is a system principle block diagram of the present invention.

[0028] In the figure: 1. audio device body; 2. input port; 3. output port; 4. noise reduction layer; 5. receiving module; 6. scene detection algorithm module; 7. filtering noise reduction module; 8. signal processing module; 9. audio amplifier module; 10. storage module; 11. deletion module; 12. air inlet channel; 13. fan body; 14. sound absorbing board; 15. heat dissipation hole; 16. fixing mechanism; 161. fixing bolt; 162. through groove; 163. fixing block; 164. threaded groove; 17. sound absorbing layer; 18. noise reduction hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-6 , an audio noise reduction device and method, comprising an audio device body 1, an input port 2, an output port 3 and a fan body 13, a noise reduction layer 4 is arranged on the surface of the inner wall of the audio device body 1, a receiving module 5, a scene detection algorithm module 6 and a filtering noise reduction module 7 are arranged inside the audio device body 1, a signal processing module 8 is arranged on the left side of the filtering noise reduction module 7, an audio power amplifier module 9 is arranged on the front side of the signal processing module 8, an air inlet channel 12 is arranged at the front and back of the left side of the audio device body 1, a fan body 13 is fixedly arranged inside the air inlet channel 12, sound absorbing panels 14 and fixing mechanisms 16 are arranged on both sides of the inside of the air inlet channel 12, and a sound absorbing layer 17 is filled inside the inner wall of the air inlet channel 12.

[0031] The fixing mechanism 16 includes a fixing bolt 161, a through groove 162, a fixing block 163 and a threaded groove 164. The through groove 162 is formed on the surface of the sound absorbing panel 14, the fixing block 163 is fixedly arranged inside the air inlet passage 12, and the threaded groove 164 is formed on the surface of the fixing block 163. The inner diameter of the through groove 162 is larger than the outer diameter of the threaded end of the fixing bolt 161 to avoid friction between the thread of the fixing bolt 161 and the inner wall of the threaded groove 164. The total length of the through groove 162 and the threaded groove 164 is larger than the length of the fixing bolt 161, so that the head end of the fixing bolt 161 can completely enter the inside of the threaded groove 164. In this embodiment, by setting the fixing bolt 161, the through groove 162, the fixing block 163 and the threaded groove 164, the fixing bolt 161 is rotated to disengage from the inside of the threaded groove 164 and the through groove 162 in turn, so that the sound absorbing panel 14 can be removed from the inside of the air inlet passage 12, and it is also used to install the sound absorbing panel 14.

[0032] The surface of the sound absorbing panel 14 is provided with heat dissipation holes 15, and the inner diameter of the heat dissipation holes 15 is smaller than the inner diameter of the through groove 162. In this embodiment, the heat dissipation holes 15 are provided to allow air to pass through the heat dissipation holes 15, so as to ensure the normal flow of air and the heat dissipation effect. Moreover, the inner diameter of the heat dissipation holes 15 is smaller than the inner diameter of the through groove 162, so that the staff can avoid inserting the fixing bolts 161 into the heat dissipation holes 15 when installing the sound absorbing panel 14.

[0033] The sound absorbing board 14 is made of polyester fiber sound absorbing material, and the sound absorbing layer 17 is made of sound-absorbing cotton, so that the air inlet channel 12 has a good sound absorbing and noise reduction effect, and effectively prevents the fan body 13 from vibrating and the spread of noise.

[0034] A plurality of noise reduction holes 18 are provided through the surface of the left side of the audio device body 1, and the noise reduction holes 18 extend to the surface of the noise reduction layer 4. In this embodiment, the noise reduction holes 18 are not only convenient for dispersing the pressure drop, reducing the liquid flow rate, reducing the sound power, and playing a role in noise reduction, but also the noise reduction holes 18 play a role in ensuring air flow.

[0035] A deletion module 11 is provided on the front side of the audio power amplifier module 9, and a storage module 10 is provided on the left side of the deletion module 11. Through the settings of the deletion module 11 and the storage module 10, the storage module 10 is used to store the data generated by the device during operation for the convenience of the staff to consult, and the deletion module 11 is convenient for the staff to delete some data. The input port 2 is unidirectionally electrically connected to the input end of the receiving module 5, the output end of the receiving module 5 is unidirectionally electrically connected to the input end of the scene detection algorithm module 6, the output end of the scene detection algorithm module 6 is unidirectionally electrically connected to the input end of the filtering and noise reduction module 7, the output end of the filtering and noise reduction module 7 is unidirectionally electrically connected to the input end of the signal processing module 8, the output end of the signal processing module 8 is unidirectionally electrically connected to the input end of the audio power amplifier module 9, the output end of the audio power amplifier module 9 is unidirectionally electrically connected to the output port 3, the output end of the deletion module 11 is unidirectionally electrically connected to the input end of the storage module 10, and the storage module 10 and the signal processing module 8 are bidirectionally and unidirectionally electrically connected.

[0036] A noise reduction method for an audio device, the method comprising the following steps:

[0037] S1, collect audio data under different noise scenes through the audio generation algorithm, convert the audio data into audio signals through the data receiving module 5, mark the audio signals to be processed with scenes and input them into the algorithm model for training, obtain the scene algorithm model, and input the scene algorithm into the scene detection algorithm module 6;

[0038] S2, constructing an audio denoising model, directly inputting the original audio data into the filtering denoising module 7 to obtain a denoised data group A, then inputting the audio data under different scene noises into the filtering denoising module 7 to obtain a denoised data group B, constructing an audio loss function according to the denoised data group A and the denoised data group B, adjusting the parameters of the audio denoising model according to the loss function, and inputting the adjusted audio denoising model into the filtering denoising module 7;

[0039] S3, during the use of the device, audio data is input from the input port 2, and then the audio signal is converted into an audio signal by the receiving module 5 and transmitted to the scene detection algorithm module 6, the scene detection algorithm module 6 detects the noise scene, and then the filtering and noise reduction module 7 filters and reduces the noise of the audio signal, and compensates for the signal lost in the noise reduction process, and then the audio signal is converted by the signal processing module 8 and amplified by the audio power amplifier module 9, and then output from the output port 3;

[0040] S4. During the operation of the audio device, the fan body 13 dissipates heat, and the vibration and noise generated by the fan body 13 are transmitted to the air inlet channel 12 and the air inside the air inlet channel 12, and are absorbed by the sound absorbing layer 17, while the sound absorbing plate 14 can absorb the vibration and noise propagated in the air, thereby reducing the impact of the vibration and noise of the fan body 13 on the audio device.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An audio noise reduction device, comprising an audio device body (1), an input port (2), an output port (3) and a fan body (13), characterized in that: The surface of the inner wall of the audio device body (1) is provided with a noise reduction layer (4); the interior of the audio device body (1) is also provided with a receiving module (5), a scene detection algorithm module (6) and a filtering noise reduction module (7); a signal processing module (8) is provided on the left side of the filtering noise reduction module (7); an audio power amplifier module (9) is provided on the front side of the signal processing module (8); air inlet channels (12) are provided at both the front and rear locations of the left side of the audio device body (1); and the fan body (13) is fixedly provided inside the air inlet channel (12).

2. An audio noise reduction device according to claim 1, characterized in that: Sound absorbing panels (14) and fixing mechanisms (16) are provided on both sides of the air inlet channel (12), and the interior of the inner wall of the air inlet channel (12) is filled with a sound absorbing layer (17).

3. The audio noise reduction device according to claim 2, characterized in that: The fixing mechanism (16) comprises a fixing bolt (161), a through slot (162), a fixing block (163) and a threaded groove (164); the through slot (162) penetrates and is opened on the surface of the sound absorbing board (14); the fixing block (163) is fixedly arranged inside the air inlet channel (12); and the threaded groove (164) is opened on the surface of the fixing block (163).

4. The audio noise reduction device according to claim 3, characterized in that: The inner diameter of the through groove (162) is greater than the outer diameter of the threaded end of the fixing bolt (161), and the total length of the through groove (162) and the threaded groove (164) is greater than the length of the fixing bolt (161).

5. The audio noise reduction device according to claim 4, characterized in that: A heat dissipation hole (15) is formed through the surface of the sound absorbing plate (14), and the inner diameter of the heat dissipation hole (15) is smaller than the inner diameter of the through groove (162).

6. The audio noise reduction device according to claim 5, characterized in that: The material of the sound absorbing plate (14) is polyester fiber sound absorbing material, and the material of the sound absorbing layer (17) is sound-absorbing cotton.

7. The audio noise reduction device according to claim 6, characterized in that: A plurality of noise reduction holes (18) are provided through the surface of the left side of the audio device body (1), and the noise reduction holes (18) extend to the surface of the noise reduction layer (4).

8. The audio noise reduction device according to claim 7, characterized in that: A deletion module (11) is arranged on the front side of the audio power amplifier module (9), and a storage module (10) is arranged on the left side of the deletion module (11).

9. The audio noise reduction device according to claim 8, characterized in that: The input port (2) is unidirectionally electrically connected to the input end of the receiving module (5), the output end of the receiving module (5) is unidirectionally electrically connected to the input end of the scene detection algorithm module (6), the output end of the scene detection algorithm module (6) is unidirectionally electrically connected to the input end of the filtering and noise reduction module (7), the output end of the filtering and noise reduction module (7) is unidirectionally electrically connected to the input end of the signal processing module (8), the output end of the signal processing module (8) is unidirectionally electrically connected to the input end of the audio power amplifier module (9), the output end of the audio power amplifier module (9) is unidirectionally electrically connected to the output port (3), the output end of the deletion module (11) is unidirectionally electrically connected to the input end of the storage module (10), and the storage module (10) and the signal processing module (8) are bidirectionally and unidirectionally electrically connected.

10. A noise reduction method for an audio device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1, collecting audio data in different noise scenes through an audio generation algorithm, converting the audio data into an audio signal through a data receiving module (5), marking the scene of the audio signal to be processed and inputting it into an algorithm model for training, obtaining a scene algorithm model, and inputting the scene algorithm into a scene detection algorithm module (6); S2, constructing an audio denoising model, directly inputting the original audio data into the filtering denoising module (7) to obtain a denoised data group A, then inputting the audio data under different scene noises into the filtering denoising module (7) to obtain a denoised data group B, constructing an audio loss function according to the denoised data group A and the denoised data group B, adjusting the parameters of the audio denoising model according to the loss function, and inputting the adjusted audio denoising model into the filtering denoising module (7); S3, during the use of the device, audio data is input from the input port (2), and then the audio signal is converted into an audio signal by the receiving module (5) and transmitted to the scene detection algorithm module (6). The scene detection algorithm module (6) detects the noise scene, and then the filtering and noise reduction module (7) filters and reduces the noise of the audio signal, and compensates for the signal lost in the noise reduction process. Then, the audio signal is converted by the signal processing module (8) and amplified by the audio power amplifier module (9), and then output from the output port (3); S4. During the operation of the audio device, the fan body (13) dissipates heat, and the vibration and noise generated by the fan body (13) are transmitted to the air inlet channel (12) and the air inside the air inlet channel (12), and are absorbed by the sound absorbing layer (17). The sound absorbing plate (14) can absorb the vibration and noise transmitted in the air, thereby reducing the impact of the vibration and noise of the fan body (13) on the audio device.

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