An intelligent noise reduction speaker based on wireless transmission

Abstract

The present invention discloses an intelligent noise reduction speaker based on wireless transmission, which relates to the technical field of wireless speakers and includes a rear shell, a rear surface of which is equidistantly penetrated by a plurality of bolts, and a front shell is installed between the front ends of the plurality of bolts. In this intelligent noise reduction speaker based on wireless transmission, during music playback, array-arranged microphones collect internal sound of the device, and utilize a filtering module and a digital signal processor to process the signal to achieve a noise reduction effect. The multiple microphones can utilize the spatial characteristics of sound to distinguish between noise and desired sound signals. The filtering module is used to filter out unnecessary frequency components, while the digital signal processor reduces the impact of noise through algorithmic processing, thereby providing clearer and cleaner audio output, thereby meeting people's demand for high-quality sound quality. The speaker requires little maintenance and has good market prospects.

Description

Technical Field

[0001] The present invention relates to the field of wireless speakers, and more particularly to an intelligent noise reduction speaker based on wireless transmission. Background Art

[0002] Audio refers to an audio system composed of a combination of electrical devices that produce sound. The development of audio technology can be divided into four stages: vacuum tubes, transistors, integrated circuits, and field-effect transistors. Smart speakers are an upgraded version of these speakers, providing a tool for home consumers to use their voice to access the internet, such as ordering songs, shopping online, or checking the weather forecast.

[0003] However, the sound emitted by smart speakers will pass through the inside of the shell during the transmission process, thus generating noise and affecting the sound quality. In order to meet people's demand for high sound quality, smart speakers are usually subjected to noise reduction processing. Traditional smart noise reduction sound mainly relies on physical or chemical methods to reduce noise, but the effect of physical or chemical noise reduction is limited, and if there is a lack of maintenance after long-term use, the noise reduction effect will be greatly reduced, and it does not have a good market prospect. Summary of the Invention

[0004] In order to overcome the defects of the existing technology, the technical problem to be solved by the present invention is to propose an intelligent noise reduction speaker based on wireless transmission, which can overcome the problem that traditional intelligent noise reduction noise mainly relies on physical or chemical methods to reduce noise, but the effect of noise reduction by physical or chemical methods is limited, and if there is a lack of maintenance after long-term use, the noise reduction effect will be greatly reduced, and it does not have a good market prospect.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention provides an intelligent noise reduction box based on wireless transmission, comprising a rear shell, a plurality of bolts equidistantly arranged on the rear surface of the rear shell, a front shell installed between the front ends of the plurality of bolts, a functional component arranged on the outside of the front shell, a module component arranged on the front inner wall of the front shell near the bottom, a noise reduction component installed on the rear inner wall of the rear shell, secondary speaker components symmetrically arranged on both sides of the rear shell near the top, the noise reduction component comprising a second circuit board, the second circuit board being mounted on the rear inner wall of the rear shell, a plurality of microphones equidistantly arranged on the front surface of the second circuit board near the edge, a second control module being mounted on the front surface of the second circuit board, a filtering module being mounted on the front surface of the second circuit board below the second control module, a digital signal processor being mounted on the front surface of the second circuit board to the right of the filtering module, and a communication module being mounted on the front surface of the second circuit board near the bottom.

[0007] In a preferred technical solution of the present invention, the inner surface wall of the front shell is coated with a first sound-absorbing coating, the inner surface wall of the first sound-absorbing coating is pasted with a first sound-absorbing cotton layer, the inner surface wall of the rear shell is coated with a second sound-absorbing coating, and the inner surface wall of the second sound-absorbing coating is pasted with a second sound-absorbing cotton layer.

[0008] In a preferred technical solution of the present invention, an embedded groove is provided near the upper portion of the front surface of the front shell, a plurality of first sound holes are arranged on the rear inner wall of the embedded groove, and a loudspeaker is electrically connected near the upper portion of the front surface of the second circuit board, and the positions of the loudspeaker and the first sound holes correspond to each other.

[0009] In a preferred technical solution of the present invention, a baffle is rotatably connected to the inside of the embedded groove, a plurality of second sound holes are arranged on the outer surface of the baffle, a pull rod is fixedly connected to the front surface of the second sound hole near the right side, a front guard plate is installed between the inner surface walls of the embedded groove, a plurality of third sound holes are arranged on the outer surface of the front guard plate, a sliding groove is provided on the front surface of the front guard plate near the right side, the outer surface of the pull rod passes through the sliding groove and extends to the front side, and the positions of the first sound hole, the second sound hole and the third sound hole correspond to each other.

[0010] In a preferred technical solution of the present invention, a movable groove is provided on the inner surface wall of the embedded groove near the left side, a spring is fixedly connected to the left inner surface wall of the movable groove, an extrusion block is fixedly connected to the right end of the spring, the extrusion block is slidably embedded in the interior of the movable groove, the end of the extrusion block is spherical, and two positioning openings are provided on the front surface of the baffle near the left side, and the positioning openings and the extrusion block cooperate with each other.

[0011] In a preferred technical solution of the present invention, the functional components include a volume button, a reset button, a power button, a mute button, a display screen, a sound receiving hole, a headphone jack and a USB jack. The volume button, reset button, power button and mute button are arranged on the right surface of the front shell near the bottom, the reset button is located below the volume button, the power button is located below the reset button, and the mute button is located below the power button.

[0012] In a preferred technical solution of the present invention, the display screen is arranged on the front surface of the front shell below the embedded groove, the sound receiving hole is opened on the front surface of the front shell at a corner above the display screen, the headphone jack is opened on the front surface of the front shell near the bottom, and the USB jack is arranged on the front surface of the front shell to the right of the headphone jack.

[0013] In a preferred technical solution of the present invention, the module assembly includes a first circuit board, which is installed on the front inner wall of the front shell near the bottom, a language processing module is provided on the rear surface of the first circuit board near the right side, a first control module is provided on the rear surface of the first circuit board near the middle, a power supply module is provided on the rear surface of the first circuit board near the left side, the first control module and the second control module cooperate with each other, and the first circuit board and the second circuit board are electrically connected through internal wiring.

[0014] In a preferred technical solution of the present invention, the two auxiliary speaker assemblies each include a mounting base, and the two mounting bases are symmetrically installed on the outer surfaces of both sides of the rear shell, a first damping shaft is installed between the inner surface walls of the mounting base, and a rotating base is installed on the outer surface of the first damping shaft.

[0015] In a preferred technical solution of the present invention, a second damping shaft is embedded near the middle of the front surface of the rotating seat, an external speaker is fixedly installed on the second damping shaft, the external speaker is electrically connected to the second circuit board through an internal circuit, and a clamping ring is tightly fitted on the outer surface of the external speaker, and the clamping ring is fixedly connected to the outer surfaces of both sides of the rear shell.

[0016] In a preferred technical solution of the present invention, the base assembly includes a counterweight seat, a driven gear is rotatably connected to the center of the bottom inner portion of the counterweight seat, a cover plate is installed on the top of the counterweight seat, a motor is installed near the edge of the top of the cover plate, the output end of the motor slides through the outer surface of the cover plate and extends downward, the output end of the motor is fixedly connected to a driving gear, and the driving gear and the driven gear are meshed and connected.

[0017] In a preferred technical solution of the present invention, a circular shell is fixedly connected to the top of the driven gear near the middle position, the outer surface of the circular shell slides through the bottom of the cover plate and extends to the top, the outer surface of the circular shell is slidably connected to the sliding shell, a damper is installed at the center of the inner bottom of the circular shell, the top of the damper is connected to the inner top of the sliding shell, the outer sleeve of the damper is provided with an elastic part, and the bottoms of the front outer shell and the rear outer shell are both connected to the top of the sliding shell.

[0018] The beneficial effects of the present invention are:

[0019] The present invention provides an intelligent noise reduction speaker based on wireless transmission. When the device plays music, the microphones arranged in an array collect the sound inside the device, and use the filtering module and digital signal processor to process the signal to achieve the noise reduction effect. The multiple microphones can use the spatial characteristics of the sound to distinguish between noise and the required sound signals. The filtering module is used to filter out unnecessary frequency components, and the digital signal processor reduces the impact of noise through algorithm processing, thereby providing clearer and cleaner audio output, thereby meeting people's demand for high-quality sound quality, and basically requires no maintenance, and has good market prospects.

[0020] When sound propagates inside the front shell and the rear shell, the first sound-absorbing cotton layer and the second sound-absorbing cotton layer absorb the sound through the porous structure and fiber material. When the sound continues to spread through the sound-absorbing cotton layer, the first sound-absorbing coating and the second sound-absorbing coating reduce the reflection of the sound through the sound-absorbing particles and texture on the surface. The combination of the two can utilize their complementary effects to provide better sound absorption performance, thereby further improving the noise reduction effect and improving the sound quality played by this device.

[0021] When the device is not in use, in order to prevent dust from entering the interior through the sound outlet channel and reducing the life of the electrical components, pull the pull rod downward. At this time, the pull rod moves from the uppermost position of the sliding slot to the lowermost position and drives the baffle to rotate. At this time, the position of the second sound hole on the baffle surface changes and is staggered with the positions of the first sound hole and the third sound hole, thereby blocking the third sound hole, effectively preventing dust from entering the interior of the device and adhering to the electrical components, and increasing the service life of the device.

[0022] When the device is placed in a high or low corner or other location, the rotating seat can drive the external speaker to rotate back and forth on the mounting seat under the action of the first damping shaft, and the external speaker can rotate around the second damping shaft under the action of the second damping shaft, so that the direction of the external speaker can be adjusted over a large range. According to the placement of the device, music can be played in different directions, and the adjustment method is simple and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of an intelligent noise reduction box based on wireless transmission according to the present invention;

[0024] Figure 2 This is an expanded view of an intelligent noise reduction box based on wireless transmission according to the present invention;

[0025] Figure 3 This is a schematic diagram of the modular structure of an intelligent noise reduction box based on wireless transmission according to the present invention;

[0026] Figure 4This is a schematic diagram of the functional components of an intelligent noise reduction speaker based on wireless transmission according to the present invention;

[0027] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0028] Figure 6 This is a partial structural diagram of an intelligent noise reduction box based on wireless transmission according to the present invention;

[0029] Figure 7 This is a schematic structural diagram of a noise reduction component of an intelligent noise reduction box based on wireless transmission according to the present invention;

[0030] Figure 8 This is a schematic structural diagram of a secondary speaker assembly of an intelligent noise reduction speaker based on wireless transmission according to the present invention;

[0031] Figure 9 for Figure 1 Schematic diagram of the structure of the middle base assembly;

[0032] Figure 10 for Figure 9 Explosion diagram.

[0033] In the picture:

[0034] 1-Front shell; 11-Embedded slot; 12-First sound-absorbing coating; 13-First sound-absorbing cotton layer; 2-Functional components; 201-Volume button; 202-Reset button; 203-On / Off button; 204-Mute button; 205-Display screen; 206-Sound receiving hole; 207-Headphone jack; 208-USB jack; 3-First sound outlet; 31-Baffle; 32-Positioning hole; 33-Second sound outlet; 34-Pull rod; 35-Front guard plate; 36-Third sound outlet; 37-Sliding slot; 4-Movable slot; 41-Spring; 42-Extrusion block; 5-Module assembly; 501-First circuit board; 502-Language processing module; 503-First control module; 504-Power supply module; 6-Rear shell; 61-Second Sound-absorbing coating; 62-second sound-absorbing cotton layer; 7-noise reduction component; 701-second circuit board; 702-second control module; 703-microphone; 704-filter module; 705-digital signal processor; 706-communication module; 8-loudspeaker; 81-bolt; 9-auxiliary speaker component; 901-mounting seat; 902-first damping shaft; 903-rotating seat; 904-second damping shaft; 905-external speaker; 906-clamping ring; 10-base assembly; 1001-counterweight seat; 1002-cover plate; 1003-driven gear; 1004-driving gear; 1005-motor; 1006-circular shell; 1007-damper; 1008-elastic member; 1009-sliding shell. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0036] like Figure 1-10 As shown, an embodiment provides an intelligent noise reduction box based on wireless transmission, including a rear shell 6, a plurality of bolts 81 are equidistantly provided on the rear surface of the rear shell 6, a front shell 1 is installed between the front ends of the plurality of bolts 81, a functional component 2 is provided on the outside of the front shell 1, a module component 5 is provided near the bottom of the front inner wall of the front shell 1, a noise reduction component 7 is installed on the rear inner wall of the rear shell 6, and secondary speaker components 9 are symmetrically provided on both sides of the rear shell 6 near the top. The noise reduction component 7 includes a second circuit board 701, which is installed on the rear inner wall of the rear shell 6, a plurality of microphones 703 are equidistantly provided on the front surface of the second circuit board 701 near the edge, a second control module 702 is installed on the front surface of the second circuit board 701, a filter module 704 is installed on the front surface of the second circuit board 701 below the second control module 702, a digital signal processor 705 is installed on the front surface of the second circuit board 701 to the right of the filter module 704, and a communication module 706 is installed near the bottom of the front surface of the second circuit board 701.

[0037] like Figure 2 、 Figure 3 and Figure 6 As shown, the inner surface of the front shell 1 is coated with a first sound-absorbing coating 12, and the inner surface of the first sound-absorbing coating 12 is adhered to a first sound-absorbing cotton layer 13. The inner surface of the rear shell 6 is coated with a second sound-absorbing coating 61, and the inner surface of the second sound-absorbing coating 61 is adhered to a second sound-absorbing cotton layer 62. The first sound-absorbing coating 12 and the second sound-absorbing coating 61 contain sound-absorbing particles and fibers, which are applied to the inner walls of the front shell 1 and the rear shell 6 by brushing. The first sound-absorbing cotton layer 13 and the second sound-absorbing cotton layer 62 are soft, porous materials, which are adhered to the inner surface of the rear shell 6 by adhesion. On the inner surfaces of the first sound-absorbing coating 12 and the second sound-absorbing coating 61, when sound propagates inside the front shell 1 and the rear shell 6, the first sound-absorbing cotton layer 13 and the second sound-absorbing cotton layer 62 absorb the sound through the porous structure and fiber material. When the sound that passes through the sound-absorbing cotton layer continues to diffuse, the first sound-absorbing coating 12 and the second sound-absorbing coating 61 reduce the reflection of the sound through the sound-absorbing particles and texture on the surface. The combination of the two can utilize their complementary effects to provide better sound absorption performance, thereby further improving the noise reduction effect and improving the sound quality played by the device.

[0038] like Figure 2-Figure 4 and Figure 6As shown, an embedded groove 11 is provided near the upper portion of the front surface of the front shell 1, and a plurality of first sound holes 3 are arranged on the inner surface wall on the rear side of the embedded groove 11. A loudspeaker 8 is electrically connected near the upper portion of the front surface of the second circuit board 701. The positions of the loudspeaker 8 and the first sound holes 3 correspond to each other. The loudspeaker 8 is mainly used for playing sound and is an existing mature technology. When the loudspeaker 8 plays sound, the sound will be transmitted through the first sound holes 3 to the front of the front shell 1 and then heard by the user.

[0039] like Figures 1-4 As shown, the inner part of the embedded groove 11 is rotatably connected to a baffle 31, and a plurality of second sound holes 33 are arranged on the outer surface of the baffle 31. A pull rod 34 is fixedly connected to the front surface of the second sound hole 33 near the right side. A front guard plate 35 is installed between the inner surface walls of the embedded groove 11. A plurality of third sound holes 36 are arranged on the outer surface of the front guard plate 35. A sliding groove 37 is opened on the front surface of the front guard plate 35 near the right side. The outer surface of the pull rod 34 passes through the sliding groove 37 and extends to the front side. The positions of the first sound hole 3, the second sound hole 33 and the third sound hole 36 correspond to each other. Under normal conditions, the positions of the first sound hole 3, the second sound hole 33 and the third sound hole 36 overlap to form a sound outlet channel for The sound of the loudspeaker 8 is transmitted. When the device is not in use, in order to prevent dust from entering the interior through the sound outlet channel and causing a decrease in the life of the electrical components, the pull rod 34 is pulled downward. At this time, the pull rod 34 moves from the uppermost position of the sliding groove 37 to the lowermost position and drives the baffle 31 to rotate. At this time, the position of the second sound hole 33 on the surface of the baffle 31 changes and is staggered with the positions of the first sound hole 3 and the third sound hole 36, thereby blocking the third sound hole 36, effectively avoiding the problem of dust entering the interior of the device and adhering to the electrical components, causing a decrease in service life, and having a good protective effect. The front guard plate 35 is glued and installed on the inner wall of the embedded groove 11 by adhesive, which protects the baffle 31.

[0040] like Figure 4As shown, a movable groove 4 is provided on the inner surface wall of the embedded groove 11 near the left side, and a spring 41 is fixedly connected to the inner surface wall of the left side of the movable groove 4. The right end of the spring 41 is fixedly connected to an extrusion block 42. The extrusion block 42 is slidably embedded in the inside of the movable groove 4, and the end of the extrusion block 42 is spherical. Two positioning holes 32 are provided on the front surface of the baffle 31 near the left side, and the positioning holes 32 cooperate with the extrusion block 42. When the baffle 31 is driven to rotate by the pull rod 34, the positioning hole 32 on the upper left side of the baffle 31 will push the extrusion block 42 to slide into the movable groove 4 and squeeze the spring 41 to contract. When the pull rod 34 moves to the lowest position of the sliding groove 37, the positioning hole 32 below will correspond to the position of the extrusion block 42. At this time, the spring 41 rebounds and pushes the extrusion block 42 to fit tightly with the recessed part of the positioning hole 32, thereby positioning the baffle 31 and preventing the baffle 31 from rotating freely, thereby improving the stability and reliability of the dustproof performance.

[0041] like Figure 1 、 Figure 3 and Figure 4 As shown, the functional component 2 includes a volume button 201, a reset button 202, a power button 203, a mute button 204, a display screen 205, a sound receiving hole 206, a headphone jack 207 and a USB jack 208. The volume button 201, the reset button 202, the power button 203 and the mute button 204 are arranged on the right surface of the front housing 1 near the bottom, the reset button 202 is located below the volume button 201, the power button 203 is located below the reset button 202, and the mute button 204 is located below the power button 203. The key 203, the mute key 204, the display screen 205, the sound receiving hole 206, the headphone jack 207 and the USB jack 208 are electrically connected to the first circuit board 501 through the connection module. This connection method is an existing mature technology and will not be described in detail here. The volume key 201 is mainly used to adjust the volume of this device, the reset key 202 is mainly used to reset the parameters of this device, the power key 203 can be used to start or shut down the device by long pressing for 3 seconds, and the sound can be quickly turned off by pressing the mute key 204, which meets the need to temporarily turn off the sound in special circumstances.

[0042] like Figure 4 As shown, the display screen 205 is arranged on the front surface of the front shell 1 at a position below the embedded groove 11, the sound receiving hole 206 is opened on the front surface of the front shell 1 at a corner above the display screen 205, the headphone jack 207 is opened on the front surface of the front shell 1 near the bottom, and the USB jack 208 is arranged on the front surface of the front shell 1 to the right of the headphone jack 207. The display screen 205 is used to display information such as playback content and volume, the sound receiving hole 206 is mainly used to receive voice commands, the headphone jack 207 is used to plug in headphones, and the USB jack 208 is used to plug in a USB cable to power the device.

[0043] like Figure 2 and Figure 3 As shown, the module assembly 5 includes a first circuit board 501, which is installed near the bottom of the front inner wall of the front shell 1. A language processing module 502 is provided on the rear surface of the first circuit board 501 near the right side, a first control module 503 is provided on the rear surface of the first circuit board 501 near the middle, and a power supply module 504 is provided on the rear surface of the first circuit board 501 near the left side. The first control module 503 cooperates with the second control module 702. The first circuit board 501 and the second circuit board 701 are electrically connected through internal wiring. When the user When a specified voice command is shouted, the sound receiving hole 206 converts the collected voice command into an electrical signal and transmits it to the first circuit board 501. The first circuit board 501 contains an audio processing circuit and related electronic components. After receiving the electrical signal, it amplifies, filters and pre-processes it. The language processing module 502 parses and understands the processed voice signal and converts it into a command. At this time, the first control module 503 receives the command and passes it to the second control module 702, which executes it through the second control module 702, such as adjusting the volume, switching tracks, pausing and playing.

[0044] like Figure 1 、 Figure 2 、 Figure 6 and Figure 9 As shown, the two secondary speaker assemblies 9 each include a mounting base 901, and the two mounting bases 901 are symmetrically mounted on the outer surfaces of both sides of the rear shell 6. A first damping shaft 902 is mounted between the inner walls of the mounting base 901, and a rotating base 903 is mounted on the outer surface of the first damping shaft 902. Under the action of the first damping shaft 902, the rotating base 903 can drive the external speaker 905 to rotate back and forth on the mounting base 901, and during the rotation process, due to the characteristics of the first damping shaft 902, there is a certain resistance, and it will not continue to rotate after the rotation is completed.

[0045] like Figure 1 、 Figure 2 、 Figure 6 and Figure 9As shown, a second damping shaft 904 is embedded near the middle of the front surface of the rotating base 903, and an external speaker 905 is fixedly installed on the second damping shaft 904. The external speaker 905 is electrically connected to the second circuit board 701 through an internal circuit. The outer surface of the external speaker 905 is tightly fitted with a clamping ring 906, which is fixedly connected to the outer surfaces of both sides of the rear shell 6. After the external speaker 905 is electrically connected to the second circuit board 701 through the internal circuit, it can be used to play sound, thereby increasing the volume. The coordination of the three sound sources can form a good stereo sound, thereby improving the playback effect. At the same time, under the action of the second damping shaft 904, the external speaker 905 can rotate around the second damping shaft 904, so that the direction of the external speaker 905 can be adjusted in a wide range. According to the placement of the device, music can be played in different directions, which greatly improves the use effect. The clamping ring 906 mainly fixes the external speaker 905 by friction and extrusion, thereby ensuring a certain stability when the external speaker 905 is folded and stored.

[0046] like Figure 1 、 Figure 9 and Figure 10 As shown, the base assembly 10 includes a counterweight seat 1001, a driven gear 1003 is rotatably connected at the bottom center of the counterweight seat 1001, a cover plate 1002 is installed on the top of the counterweight seat 1001, a motor 1005 is installed near the edge of the top of the cover plate 1002, the output end of the motor 1005 slides through the outer surface of the cover plate 1002 and extends to the bottom, the output end of the motor 1005 is fixedly connected to the driving gear 1004, the driving gear 1004 and the driven gear 1003 are meshed and connected. During use of this device, After the device is wirelessly connected to the mobile phone through the communication module 706, the motor 1005 can be controlled to start and drive the driving gear 1004 to rotate. When the driving gear 1004 rotates, it will drive the driven gear 1003 and the circular shell 1006 to rotate. At this time, under the connection action of the damper 1007, the sliding shell 1009 outside the circular shell 1006 will drive the front shell 1 and the rear shell 6 to turn, thereby changing the direction of the audio. No manual rotation is required, and the degree of intelligence is high, which meets people's usage needs.

[0047] like Figure 1 、 Figure 9 and Figure 10As shown, a circular shell 1006 is fixedly connected to the top of the driven gear 1003 near the middle position, and the outer surface of the circular shell 1006 slides through the bottom of the cover 1002 and extends to the top, and the outer surface of the circular shell 1006 is slidably connected to the sliding shell 1009. A damper 1007 is installed at the center of the inner bottom of the circular shell 1006, and the top of the damper 1007 is connected to the inner top of the sliding shell 1009. The outer sleeve of the damper 1007 is provided with an elastic member 1008, and the bottoms of the front shell 1 and the rear shell 6 are both connected to the top of the sliding shell 1009. When the device is playing music, since the sound is transmitted through vibration, the upper part of the device will vibrate slightly, and the elastic member 1008 and the damper 1007 in the base assembly 10 will play a role of buffering and absorbing energy through expansion and contraction, which has a shock-absorbing effect, so that the device can obtain a longer service life. At the same time, suppressing vibration also has a certain noise reduction effect.

[0048] The method of use and working principle of this device: When in use, the device is powered by connecting the USB power supply to the USB jack 208, and then the power key 203 is pressed for 3 seconds to start the device. Then, under the action of the communication module 706, the device and the mobile phone are wirelessly connected using wireless methods such as Bluetooth or WiFi, and the music is played using the playback software on the mobile phone. At this time, the second control module 702 analyzes and processes the wireless signal and converts it into an audio signal, and then plays the mobile phone music through the loudspeaker 8 and two external speakers 905. When it is necessary to operate the device, a voice command can be issued to the device, and the sound receiving hole 206 converts the collected voice command into an electrical signal and transmits it to the first circuit board 501. The first circuit The board 501 includes an audio processing circuit and related electronic components. After receiving the electrical signal, it amplifies, filters and pre-processes it. The language processing module 502 analyzes and understands the processed voice signal and converts it into a command. At this time, the first control module 503 receives the command and passes it to the second control module 702 for execution. This meets people's demand for intelligence and can complete operations such as adjusting the volume, switching tracks, pausing and playing without manual operation, thereby improving the convenience of use. When the device is playing music, when part of the sound source is transmitted inside the device, the array-arranged microphones 703 collect sounds from different directions inside the device, and then the second circuit board 701 receives the microphones 703 and the second circuit board 703 receives the command. 3 The collected sound signal is pre-processed and then transmitted to the filtering module 704. At this time, the filtering module 704 filters out unnecessary frequency components according to the frequency characteristics of the noise. At this time, the digital signal processor 705 receives the filtered sound signal and uses the digital signal processing algorithm to analyze and process it, and then executes the noise reduction algorithm to achieve noise suppression, echo cancellation, etc., thereby reducing the impact of noise and providing clearer and cleaner audio output, thereby meeting people's demand for high-quality sound quality, and basically does not require maintenance, with good market prospects. At the same time, when the sound propagates inside the front shell 1 and the rear shell 6, the first sound-absorbing cotton layer 13 and the second sound-absorbing cotton layer 62 absorb the sound through the porous structure and fiber material, and the sound passing through the sound-absorbing cotton When the sound of the first layer continues to diffuse, the first sound-absorbing coating 12 and the second sound-absorbing coating 61 reduce the reflection of the sound through the sound-absorbing particles and texture on the surface. The combination of the two can take advantage of their complementary effects to provide better sound absorption performance, thereby further improving the noise reduction effect and improving the sound quality played by the device. At the same time, when the device is placed in a high or low corner or other position, under the action of the first damping shaft 902, the rotating seat 903 can drive the external speaker 905 to rotate back and forth on the mounting seat 901, and under the action of the second damping shaft 904, the external speaker 905 can rotate around the second damping shaft 904, so that the direction of the external speaker 905 can be adjusted in a wide range. According to the placement position of the device,Music can be played in different directions, and the adjustment method is simple, with good performance. When the device is not in use, to prevent dust from entering the interior through the sound outlet channel and reducing the life of the electrical components, the pull rod 34 is pulled downward. At this time, the pull rod 34 moves from the uppermost position of the sliding slot 37 to the lowermost position and drives the baffle 31 to rotate. At this time, the position of the second sound outlet 33 on the surface of the baffle 31 changes and is offset from the positions of the first sound outlet 3 and the third sound outlet 36, thereby blocking the third sound outlet 36, effectively preventing dust from entering the interior of the device and adhering to the electrical components, thereby extending the service life of the device.

[0049] Other technologies of this embodiment adopt existing technologies.

[0050] The present invention is described through preferred embodiments. Those skilled in the art will appreciate that various modifications or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. An intelligent noise reduction box based on wireless transmission, comprising a rear housing (6), characterized in that: The rear surface of the rear shell (6) is equidistantly penetrated with a plurality of bolts (81), a front shell (1) is installed between the front ends of the plurality of bolts (81), a functional component (2) is provided on the outside of the front shell (1), a module component (5) is provided near the bottom of the front inner surface wall of the front shell (1), a noise reduction component (7) is installed on the rear inner surface wall of the rear shell (6), auxiliary speaker components (9) are symmetrically provided near the top of both sides of the rear shell (6), and a base component (10) is provided between the bottoms of the front shell (1) and the rear shell (6); The noise reduction component (7) comprises a second circuit board (701), the second circuit board (701) being mounted on the rear inner wall of the rear housing (6), a plurality of microphones (703) being equidistantly arranged near the edge of the front surface of the second circuit board (701), a second control module (702) being mounted on the front surface of the second circuit board (701), a filter module (704) being mounted below the second control module (702), a digital signal processor (705) being mounted on the front surface of the second circuit board (701) at a position to the right of the filter module (704), and a communication module (706) being mounted near the bottom of the front surface of the second circuit board (701); The base assembly (10) comprises a counterweight seat (1001), a driven gear (1003) being rotatably connected at the center of the bottom of the counterweight seat (1001), a cover plate (1002) being installed on the top of the counterweight seat (1001), a motor (1005) being installed near the edge of the top of the cover plate (1002), an output end of the motor (1005) slidingly passing through the outer surface of the cover plate (1002) and extending downward, a driving gear (1004) being fixedly connected to the output end of the motor (1005), and the driving gear (1004) and the driven gear (1003) being meshed and connected; A circular shell (1006) is fixedly connected to the top of the driven gear (1003) near the middle, the outer surface of the circular shell (1006) slides through the bottom of the cover plate (1002) and extends to the top, the outer surface of the circular shell (1006) is slidably connected to a sliding shell (1009), a damper (1007) is installed at the center of the inner bottom of the circular shell (1006), the top of the damper (1007) is connected to the inner top of the sliding shell (1009), the outer sleeve of the damper (1007) is provided with an elastic member (1008), and the bottoms of the front housing (1) and the rear housing (6) are both connected to the top of the sliding shell (1009); The inner surface wall of the front shell (1) is coated with a first sound-absorbing coating (12), and a first sound-absorbing cotton layer (13) is adhered to the inner surface wall of the first sound-absorbing coating (12); the inner surface wall of the rear shell (6) is coated with a second sound-absorbing coating (61), and a second sound-absorbing cotton layer (62) is adhered to the inner surface wall of the second sound-absorbing coating (61); an embedded groove (11) is provided near the top of the front surface of the front shell (1), and a plurality of first sound outlet holes (3) are arranged on the inner surface wall of the rear side of the embedded groove (11); a loudspeaker (8) is electrically connected to the upper position of the front surface of the second circuit board (701), and the positions of the loudspeaker (8) and the first sound outlet holes (3) correspond to each other; The inner part of the embedded groove (11) is rotatably connected to a baffle (31), and a plurality of second sound holes (33) are arranged on the outer surface of the baffle (31), and a pull rod (34) is fixedly connected to the front surface of the second sound hole (33) near the right side. A front guard plate (35) is installed between the inner surface walls of the embedded groove (11), and a plurality of third sound holes (36) are arranged on the outer surface of the front guard plate (35), and a sliding groove (37) is opened on the front surface of the front guard plate (35) near the right side. The outer surface of the pull rod (34) passes through the sliding groove (37) and extends to the front side. The positions of the first sound hole (3), the second sound hole (33) and the third sound hole (36) correspond to each other. A movable groove (4) is provided on the inner surface wall of the embedded groove (11) near the left side, a spring (41) is fixedly connected to the left inner surface wall of the movable groove (4), and an extrusion block (42) is fixedly connected to the right end of the spring (41), and the extrusion block (42) is slidably embedded in the interior of the movable groove (4), and the end of the extrusion block (42) is spherical. Two positioning openings (32) are provided on the front surface of the baffle (31) near the left side, and the positioning openings (32) and the extrusion block (42) cooperate with each other.

2. The intelligent noise reduction speaker based on wireless transmission according to claim 1, characterized in that: The functional component (2) comprises a volume key (201), a reset key (202), an on / off key (203), a mute key (204), a display screen (205), a sound receiving hole (206), an earphone jack (207) and a USB jack (208). The volume key (201), the reset key (202), the on / off key (203) and the mute key (204) are arranged on the right surface of the front housing (1) at a position close to the bottom. The reset key (202) is located below the volume key (201), and the on / off key (203) is located above the reset key (205). The front shell (1) is provided with a display screen (205) below the front surface of the front shell (1), the mute key (204) is located below the power key (203), the display screen (205) is provided on the front surface of the front shell (1) below the embedded groove (11), the sound receiving hole (206) is provided on the front surface of the front shell (1) at a position above the corner of the display screen (205), the headphone jack (207) is provided on the front surface of the front shell (1) near the bottom, and the USB jack (208) is provided on the front surface of the front shell (1) at a position on the right side of the headphone jack (207).

3. The intelligent noise reduction speaker based on wireless transmission according to claim 2, characterized in that: The module assembly (5) comprises a first circuit board (501), the first circuit board (501) being mounted on the inner wall of the front side of the front housing (1) at a position close to the bottom, a language processing module (502) being provided on the rear surface of the first circuit board (501) at a position close to the right side, a first control module (503) being provided on the rear surface of the first circuit board (501) at a position close to the middle, a power supply module (504) being provided on the rear surface of the first circuit board (501) at a position close to the left side, the first control module (503) being matched with the second control module (702), and the first circuit board (501) and the second circuit board (701) being electrically connected via an internal wiring.

4. The intelligent noise reduction speaker based on wireless transmission according to claim 3, characterized in that: The two auxiliary speaker assemblies (9) each include a mounting base (901), and the two mounting bases (901) are symmetrically mounted on the outer surfaces of both sides of the rear housing (6). A first damping shaft (902) is mounted between the inner surface walls of the mounting bases (901), and a rotating base (903) is mounted on the outer surface of the first damping shaft (902).

5. The intelligent noise reduction speaker based on wireless transmission according to claim 4, characterized in that: A second damping shaft (904) is embedded near the middle of the front surface of the rotating seat (903); an external speaker (905) is fixedly mounted on the second damping shaft (904); the external speaker (905) and the second circuit board (701) are electrically connected via an internal circuit; a snap ring (906) is tightly fitted on the outer surface of the external speaker (905); and the snap ring (906) is fixedly connected to the outer surfaces of both sides of the rear housing (6).

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