Anti-noise original sound pickup of seven-stringed plucked instrument
By embedding the piezoelectric sound pickup rod into the pad and integrating the sound pickup and tune device into the box, the noise, howling and debugging problems in the guqin pickup are solved, and high-sensitivity acoustic presentation and convenient on-site layout are achieved. , improves the effect of playing the guqin.
Patent Information
- Application Number
- CN202420442321.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-07
AI Technical Summary
The existing guqin pickups are prone to noise and howling during use. The patch or clamp pickups need to be debugged repeatedly during live performances and are difficult to portable, and it is difficult to show subtle changes in the sound of the guqin and other chants, which affects the performance effect. .
The piezoelectric sound pickup rod is embedded in the pad, placed at the bottom of the headrest, and connected to the sound pickup and tuning device through the connecting line to directly obtain the vibration signal of the piano body. The sound pickup and tuning device is integrated into the box for easy portability and on-site layout. , reduce the difficulty of performance preparation.
It eliminates the problem of noise and whistling, improves the sensitivity of sound picking, perfectly presents the original sound of the guqin, simplifies on-site layout and performance preparation, and improves the performance effect.
Smart Images
Figure CN222213719U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of guqin sound pickup equipment, in particular to a guqin noise-proof original sound pickup. Background Art
[0002] Guqin pickup is a special device used to capture the sound of Guqin. There are two main types of Guqin pickups on the market: the first type uses a microphone to pick up the sound. Microphone pickup is a traditional pickup device. One end of the microphone is placed near the Guqin and the other end is connected to the speaker. The second type is a patch or clip-on type. The patch or clip-on type pickup places a pickup or a small microphone near the sound control on the bottom of the Guqin to collect the sound, and the other end is connected to the speaker.
[0003] However, the above two pickup methods have different defects in actual use. For example, microphone pickup is prone to produce noise and howling; patch type or clamp type need to be debugged repeatedly during performance, and can only be attached or clamped on the same piano at a time, which is inconvenient for live performance. If the effect of microphone pickup is to be improved, the quality of the microphone is extremely high. In this way, the cost of use is increased. In addition, due to the pronunciation method of the guqin, if the microphone placed next to the guqin is too close to the guqin, the microphone will find it difficult to collect the overall pronunciation, which in turn affects the performance of the performer.
[0004] In addition, the prior art also generally uses guitar pickups as guqin pickups. However, in actual use, guitar pickups are prone to receiving excessive low-frequency standing waves, and are difficult to collect string sounds, especially difficult to show string details, which greatly affects the presentation of the guqin's melody. Summary of the invention
[0005] The purpose of the utility model is to provide a sound pickup device during guqin performance, which is easy to carry and deploy on site, reduces the difficulty of performance preparation work, and improves the effect of original sound presentation.
[0006] In order to achieve the above purpose, the utility model adopts the following scheme:
[0007] A guqin noise-proof acoustic pickup, comprising a box body, a sound pickup and tuning device, and a sound pickup structure for being placed at the head of the guqin;
[0008] The box body is provided with a placement cavity for accommodating the sound pickup and tuning device, the placement cavity is provided with a power module for supplying power to the sound pickup and tuning device, and the side wall of the box body is provided with a connection port for connecting to a playback device;
[0009] The sound pickup structure includes a piezoelectric sound pickup rod and a pad for supporting the bottom of the headstock, the piezoelectric sound pickup rod is embedded between a pair of pads, and the piezoelectric sound pickup rod is connected to the input end of the sound pickup and tuning device through a connecting line;
[0010] The sound pickup and tuning device is installed in the placement cavity, and the output end of the sound pickup and tuning device is connected to the connection port.
[0011] When the guqin is played, the body of the guqin vibrates, generating pressure changes. The piezoelectric pickup converts the pressure generated by the vibration of the body into an electrical signal. The electrical signal is amplified by the tuning pickup and output as an analog signal. The analog signal is connected to the power amplifier and audio system through the connection port to complete the secondary conversion of the electrical signal into sound, allowing the audience to hear the sound collected and output by the device.
[0012] Preferably, the pad is provided with a mounting groove for embedding the piezoelectric pickup rod, and an anti-skid pad is provided on the outer side of the pad. In this way, the mounting groove is used to improve the position accuracy of the piezoelectric pickup rod and ensure the stability of the piezoelectric pickup rod, and the anti-skid pad is used to further improve the friction between the pad and the bottom of the headstock, and between the pad and the placement table, thereby further improving the stability of the guqin during performance and ensuring the performance effect.
[0013] Preferably, a covering area is provided on the pad near the bottom of the headstock, the anti-skid pad is arranged outside the covering area, and the covering area is covered with a mesh structure layer. In this way, the mesh structure layer is used to absorb part of the low-frequency vibration and protect the pickup rod, which is conducive to further improving the sound receiving effect of the piezoelectric pickup rod.
[0014] Preferably, a button switch is provided between the sound pickup and tuning device and the power module, the button switch is connected to the sound pickup and tuning device and the power module respectively through wires, and the button switch is mounted on the side wall of the box body.
[0015] Preferably, a through hole for inserting the connecting wire is provided on the side wall of the box body, which is conducive to reducing the wear of the box body on the connecting wire and further improving the service life of the connecting wire.
[0016] Preferably, the box body is provided with a cover plate, which is connected to the side wall of the box body via a hinge. In this way, the cover plate is conducive to improving the protective performance of the box body in the storage state.
[0017] Preferably, the anti-skid pad is a rubber pad, and a raised block is arranged on the rubber pad. In this way, the raised block is used to further increase the friction between the rubber pad and the bottom of the headstock, which is conducive to further improving the stability of the guqin.
[0018] Preferably, the mesh structure layer is woven from ramie cloth. This arrangement, by utilizing the inherent characteristics of ramie cloth, is conducive to further improving the absorption effect of the mesh structure layer on low-frequency vibrations, and further improving the sound collection effect of the piezoelectric pickup rod.
[0019] Compared with the prior art, the guqin noise-proof original sound pickup provided by the utility model has the following substantial characteristics and progress: the guqin noise-proof original sound pickup embeds a piezoelectric sound pickup rod into a pair of pads to form a sound pickup structure, and the sound pickup structure is placed at the bottom of the headstock so that the pads are in contact with the instrument body, thereby allowing the piezoelectric sound pickup rod to directly obtain the vibration signal of the instrument body, avoiding the pickup of noise, eliminating the howling problem caused by traditional sound pickup methods, and improving the sound pickup sensitivity, making it easy to show the subtle changes in sound brought about by the fingering of the guqin such as Yin, Hua, Chao and Zhu, which is conducive to perfectly presenting the original sound and improving the effect of the original sound presentation. At the same time, the sound pickup and tuning device is integrated in the box body, which is easy to carry and deploy on site, reducing the difficulty of performance preparation work. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a three-dimensional structural schematic diagram of a guqin noise-proof acoustic pickup in an embodiment of the utility model.
[0021] Figure 2 yes Figure 1 Schematic diagram of the assembly structure of the box body of the Zhongguqin noise-proof acoustic pickup.
[0022] Figure 3 It is a schematic diagram of the internal structure of a sound pickup structure of a guqin noise-proof acoustic pickup in an embodiment of the utility model.
[0023] Figure 4 It is a reference diagram of the use status of a guqin noise-proof acoustic pickup in an embodiment of the utility model.
[0024] Figure numerals: 1. box body; 2. sound pickup and tuning device; 3. sound pickup structure; 4. connecting wire; 5. placement cavity; 6. power module; 7. connection port; 8. button switch; 9. through hole; 10. cover plate; 11. hinge; 12. guqin; 13. USB interface; 31. piezoelectric pickup rod; 32. pad; 33. anti-slip pad; 34. mesh structure layer. DETAILED DESCRIPTION
[0025] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.
[0026] like Figure 1-Figure 4 As shown, in the embodiment of the utility model, a guqin noise-proof original sound pickup is proposed, which is intended to be easy to carry and deploy on site, reduce the difficulty of performance preparation work, and enhance the effect of original sound presentation.
[0027] The guqin noise-proof acoustic pickup proposed in the embodiment of the utility model embeds a piezoelectric pickup rod 31 into a pair of pads 32 to form a pickup structure 3, and places the pickup structure 3 at the bottom of the headstock, so that the pads 32 are in contact with the body of the instrument, and the piezoelectric pickup rod 31 directly obtains the vibration signal of the body of the instrument, avoiding the pickup of noise, eliminating the whistling problem caused by the traditional pickup method, improving the pickup sensitivity, and facilitating the display of the subtle changes in sound brought about by the fingering of the guqin such as Yin, Hua, Chao, and Zhu, which is conducive to the perfect presentation of the original sound and improves the effect of the original sound presentation. At the same time, the pickup and tuning device 2 is integrated into the box body 1, which is convenient for carrying and on-site deployment, reducing the difficulty of performance preparation.
[0028] like Figure 1 As shown, a guqin noise-proof acoustic pickup includes a box body 1, a pickup and tuning device 2, and a pickup structure 3 for being placed at the head of the guqin. Figure 2 As shown, the box body 1 is provided with a placement cavity 5 for accommodating the sound pickup and tuning device 2. A power module 6 for supplying power to the sound pickup and tuning device 2 is provided in the placement cavity 5. A connection port 7 for connecting a playback device is provided on the side wall of the box body 1. For example, the power module 6 is a battery pack, and the playback device is an amplifier and a sound system.
[0029] like Figure 1 Combination Figure 3 As shown, the sound pickup structure 3 includes a piezoelectric pickup rod 31 and a pad 32 for supporting the bottom of the headstock. The piezoelectric pickup rod 31 is embedded between a pair of pads 32. The piezoelectric pickup rod 31 is connected to the input end of the sound pickup and tuning device 2 through a connecting line 4. The piezoelectric pickup rod 31 is used to convert the collected vibration signal into an electrical signal, and transmit the electrical signal to the sound pickup and tuning device 2 through the connecting line 4.
[0030] like Figure 2 As shown, the sound pickup and tuning device 2 is installed in the placement cavity 5. The output end of the sound pickup and tuning device 2 is connected to the connection port 7. The sound pickup and tuning device 2 is used to amplify the electrical signal transmitted from the piezoelectric pickup rod 31 and transmit the analog signal to the playback device through the connection port 7. The sound pickup and tuning device 2 is also provided with a tuning knob, which is used to adjust parameters such as bass output and treble output.
[0031] like Figure 2 As shown, a button switch 8 is provided between the sound pickup and tuning device 2 and the power module 6. The button switch 8 is connected to the sound pickup and tuning device 2 and the power module 6 respectively through wires. The button switch 8 is installed on the side wall of the box body 1.
[0032] In order to further improve the performance of Guqin, Figure 2As shown, the sound pickup and tuning device 2 is also provided with a USB interface 13. The USB interface is used to access the accompaniment audio, thereby adding background and harmonic sounds to the melody of the guqin, enriching the musical level of the guqin performance, improving the auditory effect, and further enhancing the expressiveness of the guqin performance.
[0033] like Figure 1 Combination Figure 3 As shown, the backing plate 32 is provided with a mounting groove for embedding the piezoelectric pickup rod 31. An anti-skid pad 33 is provided on the outer side of the backing plate 32. In this way, the mounting groove is used to improve the position accuracy of placing the piezoelectric pickup rod 31, ensuring the stability of placing the piezoelectric pickup rod 31, and the anti-skid pad 33 is used to further improve the friction between the backing plate 32 and the bottom of the headstock, and between the backing plate 32 and the placement table, thereby further improving the stability of the guqin during performance and ensuring the performance effect.
[0034] For example, the anti-skid pad 33 is a rubber pad, and a raised block is arranged on the rubber pad. In this way, the raised block is used to further increase the contact area between the rubber pad and the bottom of the headstock, which is conducive to further improving the stability of the guqin.
[0035] like Figure 1 As shown, a covering area is provided on the pad 32 near the bottom of the headstock. The anti-skid pad 33 is arranged outside the covering area, and the covering area is covered with a mesh structure layer 34. In this way, the mesh structure layer 34 is used to absorb low-frequency vibrations, which is conducive to further improving the sound collection effect of the piezoelectric pickup rod 31.
[0036] For example, the mesh structure layer 34 is woven from kudzu cloth. In this way, the kudzu cloth's own characteristics are utilized to further improve the mesh structure layer 34's absorption effect on low-frequency vibrations, and further enhance the sound pickup effect of the piezoelectric pickup bar 31. The kudzu cloth is a cloth made from the fibers of a vine plant, kudzu.
[0037] like Figure 1 As shown, a through hole 9 for inserting the connecting wire 4 is provided on the side wall of the box body 1. Such a configuration is conducive to reducing the wear of the box body 1 on the connecting wire 4 and further improving the service life of the connecting wire 4.
[0038] like Figure 1 Combination Figure 2 As shown, a cover plate 10 is provided on the box body 1. The cover plate 10 is connected to the side wall of the box body 1 through a hinge 11. In this way, the cover plate 10 is conducive to improving the protective performance of the box body 1 in the storage state.
[0039] When the guqin noise-proof acoustic pickup proposed in the embodiment of the utility model is used, Figure 4As shown, the sound pickup structure 3 is placed at the edge of the piano table, and the guqin 12 is placed on the pad 32 of the sound pickup structure 3. When the guqin is played, the body of the guqin is driven to vibrate, resulting in pressure changes. The piezoelectric pickup rod 31 converts the pressure generated by the vibration of the body of the guqin into an electrical signal, which is amplified by the tuning pickup and output as an analog signal. The analog signal is connected to the power amplifier and the sound system through the connection port 7 to complete the secondary conversion of the electrical signal to sound, so that the audience can hear the sound collected and output by the device.
[0040] The guqin noise-proof acoustic pickup proposed in the embodiment of the utility model solves the noise problem of the microphone picking up the sound of general musical instruments. The microphone picks up the air vibration and inevitably picks up the environmental noise. The guqin noise-proof acoustic pickup is in direct contact with the body of the guqin and picks up the vibration of the body of the guqin. It does not collect other sounds other than the vibration of the body of the guqin, thus solving the noise problem of traditional sound pickup.
[0041] Secondly, the guqin noise-proof acoustic pickup solves the problem of microphone pickup causing howling. When playing guqin indoors, it often causes howling due to reflections in a closed space. The reason is that the traditional sound pickup method collects air vibrations. The guqin noise-proof acoustic pickup collects vibrations in a way that completely eliminates the howling problem.
[0042] Thirdly, the guqin noise-proof acoustic pickup also solves the problem of low sensitivity of traditional microphones. The guqin's fingering techniques such as Yin, Hua, Chao and Zhu bring subtle changes in sound, which is not only a reflection of the guqin's unique timbre, but also the charm of its sound. Ordinary microphones have a relatively low signal-to-noise ratio. In order to avoid howling, the volume needs to be kept at a low level, and it is difficult to fully collect subtle changes in sound. The guqin noise-proof acoustic pickup is sensitive to extremely small vibrations and has high pickup sensitivity, and can fully reflect the extremely small sound changes in guqin performance.
[0043] In addition, the guqin noise-proof acoustic pickup also solves the problem of inconvenient on-site debugging of patch or clip-on pickups. Patch or clip-on pickups are rarely used in live performances. The main reason is that they need to be repeatedly debugged on different guqins to achieve the best performance effect, but when the guqin is changed during the performance, it is impossible to debug in time, so microphones are often used for sound pickup. The guqin noise-proof acoustic pickup is easy to carry and deploy on site, reducing the difficulty of performance preparation.
[0044] The present invention is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present invention may also have other implementation modes. For those skilled in the art, any technical solutions formed by any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A guqin noise-proof acoustic pickup, characterized in that: It comprises a box body (1), a sound pickup and tuning device (2), and a sound pickup structure (3) for being placed on the headstock of a musical instrument; The box body (1) is provided with a placement cavity (5) for accommodating the sound pickup and tuning device (2), the placement cavity (5) is provided with a power module (6) for supplying power to the sound pickup and tuning device (2), and the side wall of the box body (1) is provided with a connection port (7) for connecting to a playback device; The sound pickup structure (3) comprises a piezoelectric sound pickup rod (31) and a pad (32) for supporting the bottom of the headstock, the piezoelectric sound pickup rod (31) is embedded between a pair of pads (32), and the piezoelectric sound pickup rod (31) is connected to the input end of the sound pickup and tuning device (2) via a connecting line (4); The sound pickup and tuning device (2) is installed in the placement cavity (5), and the output end of the sound pickup and tuning device (2) is connected to the connection port (7).
2. The guqin noise-proof acoustic pickup according to claim 1 is characterized in that: The backing plate (32) is provided with a mounting groove for embedding the piezoelectric pickup rod (31), and an anti-slip pad (33) is provided on the outer side of the backing plate (32).
3. The guqin noise-proof acoustic pickup according to claim 2 is characterized in that: A covering area is provided on the backing plate (32) close to the bottom side of the headstock, the anti-slip pad (33) is arranged on the outside of the covering area, and the covering area is covered with a mesh structure layer (34).
4. The guqin noise-proof acoustic pickup according to claim 1, characterized in that: A button switch (8) is provided between the sound pickup and tuning device (2) and the power module (6); the button switch (8) is connected to the sound pickup and tuning device (2) and the power module (6) respectively via wires; the button switch (8) is mounted on a side wall of the box body (1).
5. The guqin noise-proof acoustic pickup according to claim 1, characterized in that: A through hole (9) for inserting a connecting wire (4) is provided on the side wall of the box body (1).
6. The guqin noise-proof acoustic pickup according to claim 1, characterized in that: The box body (1) is provided with a cover plate (10), and the cover plate (10) is connected to the side wall of the box body (1) via a hinge (11).
7. The guqin noise-proof acoustic pickup according to claim 2, characterized in that: The anti-slip pad (33) is a rubber pad, and a raised block is arranged on the rubber pad.
8. The guqin noise-proof acoustic pickup according to claim 3 is characterized in that: The mesh structure layer (34) is formed by weaving ramie cloth.