Novel clamping flood drum and control method thereof

Abstract

The invention relates to a novel carflood drum and a control method thereof, a box body is composed of a panel, a back plate and a plate body, and a control device and a snare module are arranged in the box body; the panel is provided with a sensing element, the bottom of the box body is provided with an audio output device, the sensing element and the audio output device are electrically connected with the control device, and the control device is provided with a plurality of plug connector interfaces used for being electrically connected with external equipment; the control device comprises a signal conversion module and a signal processing module. The back plate is provided with a sound hole and a first mounting hole, and the control device is arranged in the first mounting hole. The beneficial effects are that the sensing element is used for detecting the position and force information of a slapping point, converting the information into an electric signal, transmitting the electric signal to the signal processing module, and outputting the electric signal through the audio output device, thereby avoiding the phenomenon of resonance reverberation caused by vibration of a traditional wooden box body, and realizing stable signal output without interference. And a plurality of plug connector interfaces are arranged on the control panel, so that the functionality of the clamping flood drum is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of musical instruments, and more specifically, to a novel cajon drum and its control method. Background Art

[0002] Traditional cajon drums are usually made of wood, with a simple internal structure, and different tones are produced by hitting the front and side. The sound mainly depends on the resonance of the wood and the space inside the box. Although such drums have a unique timbre, they are not flexible enough in some modern music scenes.

[0003] Currently, most electronic cajon drums use a pickup device to pick up sound and then transmit it to an external speaker, which not only causes sound distortion but also resonance reverberation. Moreover, cajon drums usually do not have compatibility with modern music software or game devices and cannot interact with computers or game devices through MIDI interfaces or other connection methods. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the application scenarios of traditional cajon drums are not flexible enough, electronic cajon drums have problems of sound distortion and resonance reverberation, and do not support external devices. In view of the above defects of the prior art, a novel cajon drum and its control method are provided.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] Construct a novel cajon drum and its control method, wherein the box body includes a front panel, a back panel and a plate body; a control device and a snares module are provided inside the box body, and the snares module is arranged on one side of the front panel;

[0007] A plurality of sensing elements are provided on the front panel;

[0008] The sensing elements are electrically connected to the control device;

[0009] Sound holes and first mounting holes are provided on the back panel, the sound holes are used for emitting sound, and the first mounting holes are used for placing the control device;

[0010] An audio output device is provided on the box body, and the audio output device is electrically connected to the control device for transmitting sound;

[0011] A plurality of plug-in interfaces are provided on the control device, and the plug-in interfaces are used for electrically connecting to external devices;

[0012] The control device is also provided with a signal conversion module and a signal processing module. The signal conversion module is used to convert the multi-point signal intensity and the position information of the tapping point collected by the sensing element into electrical signals, and the signal processing module is used to process the electrical signals and play them through the audio output device.

[0013] Furthermore, the sensing element at least includes a region sensing element and a pressure sensing element;

[0014] The region sensing element is arranged on the panel and is used to detect the position of the tapping point within the panel area. The pressure sensing element is arranged on the other side of the panel and is used to detect the magnitude of the force. The region sensing element and the pressure sensing element are respectively electrically connected to the signal conversion module.

[0015] Furthermore, the panel is provided with a high-frequency region and a low-frequency region, and the region sensing elements are respectively arranged in the high-frequency region and the low-frequency region.

[0016] Furthermore, the control device includes a control board and a cover plate. The cover plate is respectively connected to the back plate and the control board; a first groove is provided at the edge of the first mounting hole, and the cover plate is arranged in the first groove and connected to the first groove; a placement groove is provided on the cover plate, and the bottom of the placement groove penetrates through the first mounting hole and abuts against the control board;

[0017] A plurality of third through holes are provided in the placement groove, and the plug-in connector interface penetrates through the third through holes and protrudes relative to the bottom surface of the placement groove.

[0018] Furthermore, the plate body includes a side plate and a top plate. The audio output device at least includes a speaker assembly and a cavity. The cavity is arranged in the box body. First through holes are respectively provided on one side of the cavity close to the side plate. Second mounting holes are respectively provided on the side plate. The first through holes abut against the side plate and are communicated with the second mounting holes. A second through hole is provided on the surface of the cavity opposite to the top plate for transmitting sound.

[0019] Furthermore, the speaker assembly includes a speaker and a mesh cover. The speaker is arranged on the second mounting hole, and one side of the speaker is recessed into the box body and located within the cavity.

[0020] Furthermore, a second groove is provided on the side of the second mounting hole away from the inside of the box body, and the radius of the second groove is greater than the radius of the second mounting hole. Part of the speaker is arranged at the bottom of the second groove and fixedly connected to the second groove. The mesh cover is arranged in the second groove and fits against the side wall of the second groove to protect the speaker.

[0021] Further, the plate body includes a bottom plate; a first fixing strip is provided on one side of the panel close to the interior of the box body, and a second fixing strip is provided on one side of the back plate close to the interior of the box body;

[0022] The first fixing strip is respectively connected to the panel, the top plate, the side plates and the bottom plate;

[0023] The second fixing strip is respectively connected to the back plate, the top plate, the side plates and the bottom plate.

[0024] Further, the snares module includes a snare, an adjusting block and a stud. One end of the snare is fixed to the first fixing strip close to the top plate, and the other end is connected to the adjusting block and is fixedly arranged at the bottom of the box body through the stud. The stud is also used to adjust the tension of the snare.

[0025] Construct a control method for a new type of cajon drum, which includes the following steps:

[0026] Synchronously collect the slapping point position information and pressure signals through multiple area sensing elements and pressure sensing elements;

[0027] Detect the signal intensity and the slapping point position of the signal;

[0028] According to the slapping point position and the signal intensity, convert the signal into corresponding force parameters and area sound effect call parameters;

[0029] Call the corresponding sound effect file in the sound effect library and adjust the volume, reverberation, delay or filtering parameters of the sound effect according to the force parameters;

[0030] Play the processed sound effect through an audio output device.

[0031] The beneficial effects of the present invention are as follows: The box body of the cajon drum is composed of a front panel, a back panel, side panels and a plate body; a control device and a snare module are arranged inside the box body. The control device is arranged close to the back panel, and the snare module is arranged close to the front panel. The snare module is closely matched with the percussion area of the front panel to produce a more natural and vivid sound effect. Sound holes and first mounting holes are provided on the back panel. The sound holes are not only used for sound transmission, but also can adjust the clarity and three-dimensional sense of the tone color. Through the design of the sound holes, the sound can resonate inside the box body, enhancing the richness of the tone color. The first mounting hole is used to place the control device; second mounting holes are respectively provided on the side panels for installing the audio output device. Among them, a high-frequency area and a low-frequency area are provided on the front panel, and sensing elements are arranged within the range of the high-frequency area and the low-frequency area. The sensing elements are used to detect the pressure and the magnitude of the pressure in the panel area, that is, the sensing elements can sense the position information of the percussion points of the performer and the magnitude of the force, and convert it into an electrical signal through the signal conversion module and transmit it to the signal processing module in the control device. The signal processing module integrates the signals from the sensing elements. An audio output device is provided at the bottom of the box body. The audio output device is electrically connected to the signal processing module. The signal processing module outputs the integrated sound effect through the audio output device, thereby realizing precise control of the sound, avoiding the phenomenon of resonance reverberation caused by vibration in the traditional wooden box body, improving the sound quality and playing accuracy, and realizing stable signal output without interference. Multiple plug-in interfaces on the control board support various connection methods such as Bluetooth and MIDI interfaces, expanding the application scenarios of the cajon drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is an exploded view of a novel cajon drum in an embodiment of the present invention;

[0033] Figure 2 is a front view of a novel cajon drum in an embodiment of the present invention;

[0034] Figure 3 is a rear view of a novel cajon drum in an embodiment of the present invention;

[0035] Figure 4 is a perspective view of a novel cajon drum in an embodiment of the present invention;

[0036] Figure 5 is a perspective view of a novel cajon drum from another perspective in an embodiment of the present invention;

[0037] Figure 6 is a perspective view of the snare module of a novel cajon drum in an embodiment of the present invention;

[0038] Figure 7 is a step flowchart of a novel cajon drum and its control method in an embodiment of the present invention.

[0039] Label description: box body 1, front panel 11, high - pitch area 111, low - pitch area 112; back panel 12, sound hole 121, first mounting hole 122, first groove 123; side panel 13, second mounting hole 131, second groove 132; top panel 14; bottom panel 15, foot pad 151; plate body 16; control device 2, control board 21, connector interface 211, cover plate 22, placement groove 221, third through - hole 222; sensing element 3, area sensing element 31, pressure sensing element 32; audio output device 4, speaker assembly 41, speaker 411, mesh cover 412, cavity 42, first through - hole 421, second through - hole 422; first fixing strip 5, second fixing strip 6; jingle string module 7, jingle string 71, adjusting block 72, stud 73. Detailed implementation manners

[0040] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are some, rather than all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Please refer to the attached Figures 1-6 As shown in the figure, the present invention provides a novel cajon drum and its control method. The box body 1 includes a front panel 11, a back panel 12, and a plate body 16. A control device 2 and a jingle string module 7 are provided inside the box body 1. Among them, the jingle string module 7 is arranged on one side of the front panel 11. A plurality of sensing elements 3 are provided on the front panel 11. The sensing elements 3 are electrically connected to the control device 2. A sound hole 121 and a first mounting hole 122 are provided on the back panel 12. The sound hole 121 is used for emitting sound, and the first mounting hole 122 is used for placing the control device 2. An audio output device 4 is provided on the box body 1. The audio output device 4 is electrically connected to the control device 2 and is used for spreading sound. A number of connector interfaces 211 are provided on the control device 2. The connector interfaces 211 are used for electrically connecting to external devices. A signal conversion module and a signal processing module are also provided on the control device 2. The signal conversion module is used for converting the multi - point signal intensity and the position information of the percussion points collected by the sensing elements 3 into electrical signals. The signal processing module is used for processing the electrical signals and playing them through the audio output device 4.

[0042] In this embodiment, the box body 1 is composed of a front panel 11, a back panel 12, and a plate body 16; a control device 2 and a snare module 7 are provided inside the box body 1. Among them, inside the box body 1, the control device 2 is arranged on one side close to the back panel 12, and the snare module 7 is arranged on one side close to the front panel 11. An induction element 3 is provided on the front panel 11. The induction element 3 includes a region induction element 31 and a pressure induction element 32. The region induction element 31 is arranged on the surface on the side far from the inside of the box body 1 or embedded in the front panel 11 of the cajon drum; among them, a high - pitch region 111 and a low - pitch region 112 are provided on the front panel 11, and the region induction element 31 is specifically arranged in the high - pitch region 111 and the low - pitch region 112; the pressure induction element 32 is arranged on the surface on the side close to the inside of the box body 1 and is respectively located in the high - pitch region 111 and the low - pitch region 112. Among them, the region induction element 31 and the pressure induction element 32 are respectively electrically connected to a signal conversion module. The region induction element 31 is used to detect the position information of the tapping point on the front panel 11, and the pressure induction element 32 is used to detect the magnitude of the pressure applied to the front panel 11. An audio output device 4 is provided at the bottom of the box body 1. The audio output device 4 is electrically connected to a signal processing module. The signal processing module integrates the signals from the signal processing module, and the integrated sound effect is output to the outside through the audio output device 4 to achieve stable signal output without interference.

[0043] The control board 21 on the control device 2 is provided with a number of connector interfaces 211 to facilitate electrical connection with external devices. In one embodiment, the connector interfaces 211 include but are not limited to MIDI interfaces. Through the MIDI interface, the cajon drum can be connected to music game software or digital music production tools to achieve interaction with virtual musical instruments, providing users with more possibilities for entertainment and creation. At the same time, it also supports microphone input, allowing the mixing of human voices or the sounds of other musical instruments with the sound of the cajon drum for recording. This not only facilitates recording and mixing but also provides more possibilities for live performances.

[0044] In another embodiment, the cajon drum is also provided with a Bluetooth connection device, which can be connected to mobile phones, computers, or other Bluetooth devices. Users can play music through Bluetooth or use it in conjunction with a digital audio workstation (DAW), expanding the application scenarios of the cajon drum.

[0045] Please refer to Figure 2 and Figure 4 , the induction element 3 at least includes a region induction element 31 and a pressure induction element 32; the region induction element 31 is arranged on the front panel 11 to detect the position of the tapping point within the area of the front panel 11, the pressure induction element 32 is arranged on the other side of the front panel 11 to detect the magnitude of the force, and the region induction element 31 and the pressure induction element 32 are respectively electrically connected to a signal conversion module.

[0046] In specific implementation: The sensing element 3 is disposed on the panel 11. The sensing element 3 includes a region sensing element 31 and a pressure sensing element 32. Among them, the region sensing element 31 is disposed on the outer side of the panel 11, and the pressure sensing element 32 is disposed on the inner side of the panel 11. Moreover, the region sensing element 31 is respectively provided in the high - pitch region 111 and the low - pitch region 112 of the panel 11, and the pressure sensing elements 32 are respectively located in the high - pitch region 111 and the low - pitch region 112 of the panel 11. The region sensing element 31 includes, but is not limited to, a piezoelectric sensor, a resistive pressure sensor, a capacitive pressure sensor, and a fiber optic pressure sensor.

[0047] In one embodiment, the region sensing element 31 is a piezoelectric film sensor. A piezoelectric film sensor is a device that can convert mechanical pressure into an electrical signal. The piezoelectric film sensor has high sensitivity and can detect subtle pressure changes on the panel 11. The panel 11 of the cajon is a relatively large plane, and the player will strike at different positions with different forces to produce different sound effects. The piezoelectric film sensor can be embedded in the high - pitch region 111 and the low - pitch region 112 of the panel 11 of the cajon, or attached to the back of the panel 11 (i.e., the side of the panel 11 close to the inside of the box body 1) to obtain the best signal detection effect.

[0048] The cajon controls the volume by detecting the magnitude of the force on the panel 11 through the pressure sensing element 32 on the panel 11, and controls the rhythm change through frequency. Among them, the pressure sensing element 32 includes, but is not limited to, a buzzer diaphragm. The buzzer diaphragm itself is a highly sensitive element that can respond to minute vibrations. By monitoring the vibration state of the buzzer diaphragm, the magnitude and frequency of the strike can be accurately detected, and even very slight strikes can be accurately captured. The greater the strike force, the greater the amplitude of the electrical signal generated by the buzzer diaphragm, so that the magnitude of the force can be detected and mapped to different volumes. The vibration signal of the buzzer diaphragm is converted into an electrical signal, processed by the signal processing module, and then output to the outside through the audio output device 4 to achieve stable signal output.

[0049] Please refer to Figure 2 and Figure 4 As shown in, the panel 11 is provided with a high - pitch region 111 and a low - pitch region 112, and the region sensing element 31 is respectively provided in the high - pitch region 111 and the low - pitch region 112.

[0050] In specific implementation: The panel 11 is provided with a high - pitch area 111 and a low - pitch area 112, and piezoelectric film sensors are respectively arranged in the high - pitch area 111 and the low - pitch area 112. The piezoelectric film sensors are used to detect the mechanical pressure received on the panel 11. The mechanical pressure received by the piezoelectric film sensors in the high - pitch area 111 and the low - pitch area 112 is converted into an electrical signal and sent to the signal processing module to accurately identify whether it is the high - pitch area 111 or the low - pitch area 112. Multiple area sensing elements 31 and pressure sensing elements 32 synchronously collect the position information of the hitting point and the pressure signal, which can avoid the phenomenon of resonance reverberation caused by the vibration of the traditional wooden box body 1, thereby improving the sound quality and playing accuracy.

[0051] Please refer to Figure 1 and Figure 3 The control device 2 includes a control board 21 and a cover plate 22. The cover plate 22 is respectively connected to the back plate 12 and the control board 21. A first groove 123 is provided at the edge of the first mounting hole 122. The cover plate 22 is arranged in the first groove 123 and connected to the first groove 123. A placement groove 221 is provided on the cover plate 22. The bottom of the placement groove 221 penetrates through the first mounting hole 122 and abuts against the control board 21. A number of third through - holes are provided in the placement groove. The plug - in connector interface 211 penetrates through the third through - hole 222 and protrudes relative to the bottom surface of the placement groove 221.

[0052] In specific implementation: The control device 2 includes a control board 21 and a cover plate 22. The back plate 12 is provided with a sound hole 121 and a first mounting hole 122. The first mounting hole 122 is arranged below the sound hole 121, and the first mounting hole 122 is rectangular. A first groove 123 is provided at the edge of the first mounting hole 122, and the opening of the first groove 123 faces the outside of the box body 1. The first groove 123 is mainly used to place the cover plate 22. Specifically, the flange of the cover plate 22 is located in the first groove 123 and fixedly connected to the first groove 123. The bottom of the first groove 123 penetrates through the first mounting hole 122 and abuts against the control board 21 inside the box body 1.

[0053] The control board 21 of the control device 2 is arranged inside the box body 1, and the cover plate 22 is arranged on the back plate 12 of the box body 1. A placement groove 221 is provided on the cover plate 22, and the placement groove 221 abuts against the control board 21 inside the box body 1. Among them, several third through holes 222 are provided at the bottom of the placement groove 221, and several connector interfaces 211 are provided on the control board 21. The connector interfaces 211 penetrate through the third through holes 222 and protrude relative to the bottom surface of the placement groove 221 to facilitate electrical connection with external devices. Moreover, the placement groove 221 is recessed towards the inside of the box body 1 to prevent the connector interfaces 211 from protruding relative to the surface of the back plate 12 (that is, the connector interfaces 211 protruding relative to the outer surface of the back plate 12) from being impacted by the outside or accidentally applied pressure, resulting in interface damage or poor contact, causing signal instability or the device being unable to work properly. The position of the connector interfaces 211 is lower than the surface of the back plate 12 of the box body 1, avoiding the direct external force impact on the connector interfaces 211 exposed outside the box body 1 and extending the service life of the device. When the box body 1 is under the action of external pressure, the connector interfaces 211 are located inside the placement groove 221, reducing the risk of collision or scratching. Moreover, the design of the placement groove 221 being recessed towards the inside makes the interface area no longer protrude, making it more harmonious with the outer shape design of the box body 1. The appearance of the box body 1 is more streamlined and tidy, improving the aesthetic degree of the device.

[0054] Please refer to Figure 1 and Figure 5 As shown in [Figures 1 and 2], the plate body 16 includes side plates 13 and a top plate 14. The audio output device 4 at least includes a speaker assembly 41 and a cavity 42. The cavity 42 is arranged inside the box body 1. First through holes 421 are respectively provided on one side of the cavity 42 close to the side plates 13, and second mounting holes 131 are respectively provided on the side plates 13. The first through holes 421 abut against the side plates 13 and are communicated with the second mounting holes 131. Second through holes 422 are provided on the surface of the cavity 42 opposite to the top plate 14 for transmitting sound.

[0055] In specific implementation: The audio output device 4 is provided at the bottom of the box body 1. Among them, the audio output device 4 includes at least two sets of speaker components 41 and a cavity 42. The speaker components 41 are respectively provided on the side plates 13 of the box body 1. The side plates 13 of the box body 1 are provided with second mounting holes 131, and are located at the bottom of the side plates 13. The cavity 42 is hollowly provided. The hollow cavity 42 can form a resonance box. By controlling the size and shape of the cavity 42, the tone color, volume and frequency response of the musical instrument can be adjusted. The sound effect of the cajon depends on the resonance effect of the hollow cavity 42; the sound quality of the speaker 411 is optimized for the low-frequency response through reflection and resonance in the hollow cavity 42. First through holes 421 are respectively provided at both ends of the cavity 42, and the first through holes 421 of the cavity 42 respectively abut against the side plates 13 and communicate with the second mounting holes 131 on the side plates 13. The cavity 42 can guide the sound waves generated by the drum surface percussion, enabling them to propagate through a specific channel and optimizing the response effect of the bass. By controlling the air flow to enhance the low-frequency effect, the bass becomes deeper and more mellow. The first through holes 421 are communicated with the speakers 411. When the drum surface vibrates, the air inside the cavity 42 interacts with the speakers 411 through the through holes, generating low-frequency resonance and making the bass deeper. The two ends of the cavity 42 are connected to the speakers 411 and are connected by the cavity 42, enabling the speaker system to distribute sound more evenly and enhancing the stereo effect. When the cajon is struck, the sound propagates through the cavity 42, causing the low-frequency of the left and right speakers 411 to resonate synchronously and making the listening experience richer.

[0056] On the surface of the cavity 42 opposite to the top plate 14, there are second through holes 422. The second through holes 422 are specifically two circular through holes with different sizes, which are used to adjust the low-frequency response of different frequency bands, making the bass more balanced and not overly muddy or monotonous. Among them, the larger through hole is used to enhance the lower frequency, making the bass deeper and more mellow; the smaller through hole is used to enhance the higher low frequency, making the sound more compact and clear. This can balance the low-frequency response and avoid the bass being overly muddy or not powerful enough. The vibration of the speakers 411 and the drum surface will cause the air flow inside the cavity 42. If the air channel design is unreasonable, wind noise or uneven air flow will be generated. The two second through holes 422 with different sizes can allow the air to flow freely under different pressure conditions, avoiding the generation of eddy current noise at high sound pressure levels (loud volumes) and ensuring clear sound quality.

[0057] Among them, the built-in speaker components 41 of the cajon significantly improve the volume and sound quality, making it more suitable for use in various occasions (such as stage performances, recording studios or home practice). At the same time, it solves the problem that traditional cajons have a small volume and cannot meet the needs of live performances or recordings.

[0058] Please refer to Figure 1, the speaker assembly 41 includes a speaker 411 and a grille 412. The speaker 411 is partially disposed on the second mounting hole 131, and one side of the speaker 411 is recessed into the cabinet 1 and located within the cavity 42.

[0059] In a specific implementation: The speaker assemblies 41 are respectively disposed on the left and right sides of the cabinet 1 and are on the same axis as the cavity 42 inside the cabinet 1. Among them, the speaker assembly 41 includes a speaker 411 and a grille 412. The grille 412 is mainly used to protect the speaker 411, which can effectively prevent damage to the speaker 411 caused by dust, foreign objects or accidental touch, and extend the service life of the speaker 411. The speaker 411 is disposed at both ends of the cavity 42, and one end of the speaker 411 protrudes into the cavity 42, so that the diaphragm of the speaker 411 is located within the cavity 42. The diaphragm of the speaker 411 vibrates and resonates with the air in the cavity 42 to emit sound, optimizing the sound transmission path, reducing sound loss, and making the sound quality clearer.

[0060] Please refer to Figure 1 and Figure 2 , on the side of the second mounting hole 131 away from the inside of the cabinet 1, there is a second groove 132, and the radius of the second groove 132 is greater than the radius of the second mounting hole 131. The opening of the second groove 132 faces the outside of the cabinet 1. The speaker 411 is partially disposed at the bottom of the second groove 132 and is fixedly connected to the second groove 132. The grille 412 is disposed within the second groove 132 and fits against the side wall of the second groove 132 for protecting the speaker 411.

[0061] In a specific implementation: On the side plate 13 of the cabinet 1, there are respectively second mounting holes 131. On the side of the second mounting hole 131 away from the inside of the cabinet 1 (i.e., the surface of the side plate 13 on the outside of the cabinet 1), there is a second groove 132, and the radius of the second groove 132 is greater than the radius of the second mounting hole 131. The second groove 132 is used to place the speaker assembly 41. Among them, the speaker assembly 41 includes a speaker 411 and a grille 412. The speaker 411 is disposed at the bottom of the second groove 132 and is fixedly connected to the bottom of the second groove 132 so that the speaker 411 can be fixed on the side plate 13. The grille 412 is disposed within the second groove 132 and fits against the side wall of the second groove 132, so that the speaker 411 can be completely wrapped by the grille 412. The grille 412 is mainly used to protect the speaker 411 and prevent damage to the speaker 411 caused by dust, foreign objects or accidental touch.

[0062] Please refer to Figure 1 , the plate body 16 includes a bottom plate 15; on the side of the panel 11 close to the inside of the cabinet 1, there is a first fixing strip 5, and on the side of the back plate 12 close to the inside of the cabinet 1, there is a second fixing strip 6; the first fixing strip 5 is respectively connected to the panel 11, the top plate 14, the side plate 13 and the bottom plate 15, and the second fixing strip 6 is respectively connected to the back plate 12, the top plate 14, the side plate 13 and the bottom plate 15.

[0063] In specific implementation: The plate body includes a side plate 13, a top plate 14, and a bottom plate 15; the front panel 11 is fixedly connected to the top plate 14, the side plate 13, and the bottom plate 15 respectively through a first fixing strip 5; the back panel 12 is fixedly connected to the top plate 14, the side plate 13, and the bottom plate 15 respectively through a second fixing strip 6. Among them, a foot pad 151 is provided on the bottom plate 15 for supporting the box body 1. The support of the foot pad 151 can make the sound of the cajon drum clearer, the bass more powerful, and reduce the noise caused by unnecessary vibrations.

[0064] Please refer to Figure 1 and Figure 6 , the snare string module 7 includes a snare string 71, an adjusting block 72, and a stud 73. One end of the snare string 71 is fixed to the first fixing strip 5 near the top plate 14, the other end is connected to the adjusting block 72, and is fixedly arranged at the bottom of the box body 1 through the stud 73. The stud 73 is also used to adjust the tension of the snare string 71.

[0065] In specific implementation: The snare string module 7 is arranged inside the box body 1, specifically on the side close to the front panel 11. Among them, the snare string module 7 includes a snare string 71, an adjusting block 72, and a stud 73; one end of the snare string 71 is fixed to the first fixing strip 5 near the top plate 14, the other end is connected to the adjusting block 72, and is fixedly arranged on the first fixing strip 5 near the bottom plate 15 of the box body 1 through the stud 73. The stud 73 passes through the bottom plate 15 and the first fixing strip 5 from the outside of the box body 1 to be connected to the adjusting block 72 to fix the snare string 71. The head of the stud 73 is located outside the box body 1, and the tension of the snare string 71 can be adjusted without opening the box body 1 or disassembling other components, reducing the complexity of the operation.

[0066] The present invention also provides a control method for a new type of cajon drum, including the following steps:

[0067] Synchronously collect the position information of the hitting point and the pressure signal through a plurality of area sensing elements 31 and pressure sensing elements 32;

[0068] Detect the signal intensity and the position of the hitting point;

[0069] According to the position of the hitting point and the signal intensity, convert the signal into corresponding force parameters and area sound effect calling parameters;

[0070] Call the corresponding sound effect file in the sound effect library, and adjust the volume, reverberation, delay, or filtering parameters of the sound effect according to the force parameters;

[0071] Play the processed sound effect through the audio output device.

[0072] In this embodiment, the cajon realizes precise detection of the position and strength of the hitting point by combining multiple area sensing elements 31 and pressure sensing elements 32, and adjusts the sound effect parameters in real time according to this information to provide rich musical performances. The panel 11 of the cajon is divided into multiple independent areas, and one or more area sensing elements 31 are configured in each area. The area sensing element 31 can be a piezoelectric film, a pressure sensor or other types of sensors, and is used to detect the position of the hitting point. In addition, a pressure sensing element 32 is also configured in each area to detect the strength of the hitting. The pressure sensing element 32 can be a piezoelectric ceramic, a strain gauge or other highly sensitive pressure sensors, and can accurately measure the pressure applied during hitting. The information of multiple area sensing elements 31 and pressure sensing elements 32 is synchronously collected to ensure that the signals of multiple areas can be captured simultaneously, avoid signal delay or distortion, and ensure the accuracy of the hitting point position and pressure signal. The signal processing module maps the detected strength and position information to predefined strength parameters and area sound effect call parameters. For example, the strength parameters can be divided into three levels: weak, medium, and strong, corresponding to different volume and sound effect adjustments; the area sound effect parameters call the corresponding sound effect files in the sound effect library according to the area where the hitting point is located. Among them, the sound effect library is classified and stored according to the area and strength level. Each area corresponds to a set of sound effect files, and each sound effect file has different versions according to the strength level. Before the sound effect file is played, the signal processing module can also adjust it according to the strength parameter, such as volume, reverberation, delay and filtering. According to the detected area and strength parameters, the signal processing module can quickly search for and load the corresponding sound effect file to ensure the real-time and smooth playback of the sound effect.

[0073] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, device, article or method including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, device, article or method. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, device, article or method including that element.

[0074] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A novel cajon drum and its control method, characterized in that, The box body includes a front panel, a back panel and a board body; a control device and a snare string module are arranged inside the box body, wherein the snare string module is arranged on one side of the front panel; A plurality of sensing elements are arranged on the front panel; The sensing elements are electrically connected to the control device; Sound holes and first mounting holes are arranged on the back panel, the sound holes are used for emitting sound, and the first mounting holes are used for placing the control device; An audio output device is arranged on the box body, and the audio output device is electrically connected to the control device for spreading sound; A plurality of connector interfaces are arranged on the control device, and the connector interfaces are used for electrically connecting to external devices; A signal conversion module and a signal processing module are further arranged on the control device. The signal conversion module is used for converting the multi-point signal intensity and the position information of the hitting point collected by the sensing elements into electrical signals, and the signal processing module is used for processing the electrical signals and playing them through the audio output device.

2. The novelty of the Cajon drum according to claim 1 lies in that, The sensing elements at least include area sensing elements and pressure sensing elements; The area sensing elements are arranged on the front panel for detecting the position of the hitting point within the area of the front panel. The pressure sensing elements are arranged on the other side of the front panel for detecting the magnitude of the force. The area sensing elements and the pressure sensing elements are respectively electrically connected to the signal conversion module.

3. The novel Cajon drum according to claim 2, characterized in that, A high-frequency area and a low-frequency area are arranged on the front panel, and the area sensing elements are respectively arranged in the high-frequency area and the low-frequency area.

4. The novel Cajon drum according to claim 3, characterized in that, The control device includes a control board and a cover plate. The cover plate is respectively connected to the back panel and the control board; a first groove is arranged at the edge of the first mounting hole, and the cover plate is arranged in the first groove and connected to the first groove; a placement groove is arranged on the cover plate, and the bottom of the placement groove penetrates through the first mounting hole and abuts against the control board; A plurality of third through holes are arranged in the placement groove, and the connector interfaces penetrate through the third through holes and protrude relative to the bottom surface of the placement groove.

5. The novel cajón drum according to claim 1, characterized in that, The board body includes side plates and a top plate. The audio output device at least includes a speaker assembly and a cavity. The cavity is arranged inside the box body. First through holes are respectively arranged on one side of the cavity close to the side plates. Second mounting holes are respectively arranged on the side plates. The first through holes abut against the side plates and are communicated with the second mounting holes. A second through hole is arranged on the surface of the cavity opposite to the top plate for transmitting sound.

6. The novel cajon drum according to claim 5, characterized in that, The speaker assembly includes a speaker and a grille. The speaker is arranged on the second mounting hole, and one side of the speaker is recessed into the box body and located inside the cavity.

7. The novel Cajon drum according to claim 6, characterized in that, A second groove is arranged on the side of the second mounting hole away from the inside of the box body, and the radius of the second groove is greater than the radius of the second mounting hole. Part of the speaker is arranged at the bottom of the second groove and fixedly connected to the second groove. The grille is arranged in the second groove and fits against the side wall of the second groove for protecting the speaker.

8. The novel cajon drum according to claim 7, characterized in that, The board body includes a bottom plate; a first fixing strip is arranged on one side of the front panel close to the inside of the box body, and a second fixing strip is arranged on one side of the back panel close to the inside of the box body; The first fixing strip is respectively connected to the panel, the top plate, the side plate and the bottom plate; The second fixing strip is respectively connected to the back plate, the top plate, the side plate and the bottom plate.

9. The novel cajón drum according to claim 8, wherein, The snare module includes a snare, an adjusting block and a stud. One end of the snare is fixed to the first fixing strip near the top plate, the other end is connected to the adjusting block, and is fixedly arranged at the bottom of the box body through the stud. The stud is also used to adjust the tension of the snare.

10. A control method for the novel cajon drum according to any one of claims 1-9, characterized in that, Comprising the following steps: Synchronously collect the position information of the tapping point and the pressure signal through a plurality of area sensing elements and pressure sensing elements; Detect the signal strength and the tapping point position of the signal; According to the tapping point position and the signal strength, convert the signal into corresponding force parameters and area sound effect calling parameters; Call the corresponding sound effect file in the sound effect library, and adjust the volume, reverberation, delay or filtering parameters of the sound effect according to the force parameters; Play the processed sound effect through an audio output device.

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