Electroacoustic Chinese zither

Abstract

An electroacoustic Chinese zither relates to the technical field of musical instruments. The electroacoustic Chinese zither adopts a dual-pickup system of piezoelectric pickup and MIC pickup for pickup, and comprises a zither body, a whole digging cavity is arranged in the zither body, a head beam and a tail beam are arranged on the zither body, a groove is formed in the head beam, a beam strip is embedded in the groove, a piezoelectric pickup strip is embedded between the beam strip and the head beam, a circuit board is arranged in the zither body, and the piezoelectric pickup strip is connected with the circuit board. A microprocessor, a first audio amplifier, a second audio amplifier, an MIC pickup, a piezoelectric pickup volume adjusting knob, an MIC pickup volume adjusting knob and a piezoelectric pickup strip interface are integrated on the circuit board. According to the utility model, the dual-pickup system of piezoelectric pickup and MIC pickup is used for pickup, the piezoelectric pickup or MIC pickup can be independently selected, the piezoelectric pickup and MIC pickup can also be simultaneously selected, the mixing of the piezoelectric pickup can simulate and increase an attack value, the sound is effectively enabled to be more granular and clear, the mixing of the MIC pickup can simulate and increase a release value, and the space sense of tone is effectively enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of musical instruments, in particular to an electric guzheng. Background Art

[0002] The traditional guzheng has good resonance, long sustain, and large dynamics, but it can easily produce whistling when connected to amplification equipment, and the sound is easily offset when playing with other instruments, making the sound unstable during stage performance. Furthermore, the guzheng is large and heavy, requiring a stand and accessories for outdoor use, making it difficult to carry. CN117765906A discloses an intelligent electric guzheng with multi-timbre adjustment capabilities. Sound is obtained through a pickup unit, which is a simple acquisition method. Furthermore, the pickup unit has a wide frequency response range of the piezoelectric pickup, and due to the characteristics of the piezoelectric material, the performance is reduced in certain frequency bands, which can cause signal distortion, errors, and affect the timbre. Furthermore, existing electric guzhengs lack sufficient internal sound wave reflection, resulting in poor sound stability in the actual sound. Utility Model Content

[0003] The purpose of the utility model is to provide an electric guzheng, which can effectively solve the problems in the background technology.

[0004] The technical solution for achieving the above object is: an electric guzheng, characterized in that: the electric guzheng adopts a dual pickup system of piezoelectric pickup and MIC pickup to pick up sound, comprising a guzheng body, a whole-holed cavity is provided in the guzheng body, a first yueshan and a tail yueshan are provided on the guzheng body, a groove is provided on the first yueshan, a yueshan strip is embedded in the groove, a piezoelectric pickup strip is embedded between the yueshan strip and the first yueshan, a circuit board is provided in the guzheng body, and a microprocessor, a first audio amplifier, a second audio amplifier, a MIC pickup, a piezoelectric pickup volume adjustment knob, a MIC pickup volume adjustment knob and a piezoelectric pickup strip interface are integrated on the circuit board;

[0005] The piezoelectric pickup bar is connected to the piezoelectric pickup bar interface, the piezoelectric pickup bar interface is connected to the microprocessor through the first audio amplifier, the piezoelectric pickup volume adjustment knob is connected to the first audio amplifier, the MIC pickup is connected to the microprocessor through the second audio amplifier, and the MIC pickup volume adjustment knob is connected to the second audio amplifier;

[0006] An audio output interface is also installed in the zither body. The audio output interface is installed in the zither body, and the interface end protrudes from the side wall of the zither body. The audio output interface is connected to the microprocessor. The output total volume adjustment knob and the MIC mixing amount adjustment knob protrude outward from the side wall of the zither body respectively.

[0007] Furthermore, the inner cavity of the zither body adopts an acoustic structure cavity.

[0008] Furthermore, a power supply battery for powering the electric guzheng is also installed in the guzheng body.

[0009] Furthermore, a receiving groove is provided on the zither body panel, and a tuner with an upper end protruding from the zither body panel is provided in the receiving groove, and the tuner has a display screen.

[0010] Furthermore, brackets that can be folded inward and stored are installed on both sides of the bottom of the zither body. The brackets include two legs arranged at intervals, and a reinforcing connecting rod is connected between the legs. The bottoms of both ends of the zither body are respectively connected to hinge seats. The inner ends of the hinge seats are provided with hinge grooves that cooperate with the legs on both sides of the brackets for hinge connection. The upper ends of the legs are hinged in the hinge grooves. When the brackets on both sides are in the open state, they are in an eight-shape and cooperate with the bottom of the hinge grooves to limit the position.

[0011] Furthermore, diagonal braces are connected between the outer side walls of the legs of the two side brackets and the bottom of the zither body. One end of the diagonal brace is hinged to the bottom of the zither body. A slide groove is provided on the diagonal brace along its length. The slide groove on the diagonal brace is slidably connected to the legs via a pin. An upwardly curved slot is provided at one end of the slide groove away from the hinged end of the diagonal brace, forming a "J"-shaped slot with the slide groove, and the slot is connected to the slide groove.

[0012] When the two side brackets are in the open state, the diagonal support rod rotates until the slot is locked on the pin on the outside of the support leg; when the two side brackets are in the folded state, the sliding groove of the diagonal support rod is driven to slide along the pin to the side away from the slot to the folded state.

[0013] Furthermore, the hinge seat on one side is connected to the bottom of the zither body through a boss, and the bracket on the other side is flush with the boss when in a folded state.

[0014] Furthermore, the length of the guzheng at its maximum length position is 888 mm, the width at its maximum width position is 249 mm, and the thickness at its maximum thickness position is 80 mm.

[0015] Furthermore, the guzheng is provided with 21 strings, and the guzheng body is located at one end of the guzheng head and is set as a hypotenuse, the guzheng head is parallel to the hypotenuse, and the hypotenuse angle is 17°.

[0016] Furthermore, the guzheng is provided with 16 strings, and the guzheng body is located at one end of the guzheng head and is set as a hypotenuse, the head mountain is parallel to the hypotenuse of the guzheng head, and the hypotenuse angle is 20°.

[0017] Beneficial effects of the utility model:

[0018] The utility model adopts a whole-holed cavity design, and the inner cavity of the zither body adopts an acoustic structure cavity, which can induce the sound to present a suitable attack time (attack) and release time (release).

[0019] The present invention has a dual pickup system of piezoelectric pickup and MIC pickup. The piezoelectric pickup or MIC pickup can be selected separately, and the piezoelectric pickup and MIC pickup can also be selected at the same time. The mixing of the piezoelectric pickup can simulate the increase of the attack value, which effectively makes the sound more granular and clear. The mixing of the MIC pickup can simulate the increase of the release value, which effectively enhances the spatial sense of the tone. Specifically, only the piezoelectric pickup can be selected, and the MIC pickup can be turned off, or only the MIC pickup can be selected, and the piezoelectric pickup can be turned off, or both the piezoelectric pickup and MIC pickup can be turned on at the same time. When the piezoelectric pickup and the MIC pickup are turned on at the same time, the volume between the two can be equal or different, and can be freely adjusted according to needs through the piezoelectric pickup volume adjustment knob and the MIC pickup volume adjustment knob.

[0020] The utility model is provided with foldable supporting legs at the bottom of the zither body, which are stacked at the bottom of the zither body after being folded. The zither has light weight, small volume and is easy to carry.

[0021] The length of the guzheng at its maximum length position is 888 mm, the width at its maximum width position is 249 mm, and the thickness at its maximum thickness position is 80 mm. Compared with traditional guzhengs, it is small in size, light in weight, and easy to carry.

[0022] This new model adopts a 17-20 degree bevel treatment at the head of the zither (two specifications: the 21-string model has a 17-degree inclination, and the 16-string model has a 20-degree inclination), which is ergonomic in use. At the same time, this design meets the effective string length requirements of the treble strings and the bass strings respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of the first embodiment;

[0024] Figure 2 This is an internal structure diagram of the first embodiment;

[0025] Figure 3 This is a control principle block diagram of the first embodiment;

[0026] Figure 4 It is a front view of the second embodiment;

[0027] Figure 5 is a side view of a second embodiment;

[0028] Figure 6 This is a schematic diagram of the second embodiment in a folded state;

[0029] Figure 7 This is a top view of the utility model. DETAILED DESCRIPTION Example 1

[0030] like Figure 1 、2 As shown in Figures 3 and 7, the utility model discloses an electric guzheng, wherein the length a at the maximum length position of the electric guzheng is 888 mm, the width b at the maximum width position is 249 mm, and the thickness c at the maximum thickness position is 80 mm.

[0031] The electric guzheng includes a guzheng body 1, the inner cavity of the guzheng body 1 adopts an acoustic structure cavity, a head yueshan 2 and a tail yueshan 3 are provided on the guzheng body 1, the head yueshan 2 is provided with a groove, an upwardly protruding yueshan strip 4 is embedded in the groove, a piezoelectric pickup strip 5 is embedded between the yueshan strip 4 and the head yueshan 2, a circuit board 6 is provided in the guzheng body 1, and a microprocessor 7, a first audio amplifier 8, a second audio amplifier 9, a MIC pickup 10, a piezoelectric pickup volume adjustment knob 11, a MIC pickup volume adjustment knob 12 and a piezoelectric pickup strip interface 13 are integrated on the circuit board 6.

[0032] The piezoelectric pickup bar 5 is connected to the piezoelectric pickup bar interface 13, the piezoelectric pickup bar interface 14 is connected to the microprocessor 7 through the first audio amplifier 8, the piezoelectric pickup volume adjustment knob 11 is connected to the first audio amplifier 8, the MIC pickup 10 is connected to the microprocessor 7 through the second audio amplifier 9, and the MIC pickup volume adjustment knob 12 is connected to the second audio amplifier 9.

[0033] A receiving groove 23 is provided on the panel of the guzheng body 1, and a tuner 24 is provided in the receiving groove 23, the upper end of which protrudes from the panel of the guzheng body 1. The tuner 24 has a display screen and is used for tuning the guzheng.

[0034] An audio output interface 14 is also installed in the zither body 1, and a power supply battery 15 for powering the electric zither is also installed in the zither body 1. Specifically, the power supply battery 15 is connected to the piezoelectric pickup bar 5, the microprocessor 7, the first audio amplifier 8, the second audio amplifier 9, and the MIC pickup 10 respectively.

[0035] The audio output interface 14 is installed in the zither body 1, and the interface end protrudes from the side wall of the zither body 1. The audio output interface 14 is connected to the microprocessor 7. The piezoelectric pickup volume adjustment knob 11 and the MIC pickup volume adjustment knob 12 protrude outward from the side wall of the zither body 1 respectively.

[0036] The microprocessor uses an STM32F407ZGT6 embedded microprocessor as an information processing center, receives the information voice recognition obtained by the piezoelectric pickup bar 5 and the MIC pickup 10, and outputs it through the audio output interface 13.

[0037] The present invention has two sound pickup modes, a piezoelectric pickup bar 5 and a MIC pickup 10. You can select piezoelectric pickup or MIC pickup separately, or you can select both piezoelectric pickup and MIC pickup at the same time. The mixing of MIC pickup can effectively enhance the controllability and expressiveness of the tone. Specifically, you can select only piezoelectric pickup and turn off MIC pickup, or only select MIC pickup and turn off piezoelectric pickup, or turn on both piezoelectric pickup and MIC pickup at the same time. When both piezoelectric pickup and MIC pickup are turned on at the same time, the volume between the two can be equal or unequal, and can be freely adjusted by the piezoelectric pickup volume adjustment knob 11 and the MIC pickup volume adjustment knob 12 as needed. Example 2

[0038] The difference between this embodiment and the first embodiment is that: Figure 4-6 As shown, brackets 16 that can be folded inward and stored are connected to both sides of the bottom of the zither body 1. The brackets 16 include two legs 17 arranged at intervals, and a reinforcing connecting rod 18 is connected between the legs 17. The bottoms of both ends of the zither body 1 are respectively connected to hinge seats 19. The inner ends of the hinge seats 19 are provided with hinge grooves 20 that cooperate with the legs 17 on both sides of the brackets 16 for hinge connection. The upper ends of the legs 17 are hinged in the hinge grooves 20. When the brackets 16 on both sides are in the outward open state, they are in an eight-shape. When the brackets 16 are in the open state, they are limited by the legs 17 and the bottom of the hinge grooves 20.

[0039] The hinge seat 20 on one side is connected to the bottom of the zither body 1 through the boss 21. When the bracket 16 on the other side is in the folded state, the outer side of the bracket 16 is flush with the bottom of the boss 21, so that the brackets 16 on both sides form a stacked state when they are in the folded state.

[0040] To ensure a stable supporting effect, diagonal support rods 24 are respectively connected between the outer walls of the legs 17 of the two side brackets 16 and the bottom of the zither body 1. One end of the diagonal support rod 24 is hinged to the bottom of the zither body 1. A slide groove 25 is arranged along the length direction on the diagonal support rod 24. The slide groove 25 on the diagonal support rod 24 is slidably connected to the support leg 17 through a pin 26. The end of the slide groove 25 away from the hinged end of the diagonal support rod 24 is provided with a groove 27 that is bent upward and forms a "J" shape with the slide groove 25. The groove 27 is connected to the slide groove 25.

[0041] When the bracket 16 is flipped open to both sides, the diagonal support rod 24 rotates counterclockwise along the hinge end ( Figure 4 At the same time, the slide groove 25 slides along the pin 26 to the card slot 27 and is clamped on the pin 26 on the outside of the leg 17, thereby preventing the leg 1 from rotating inward.

[0042] When the two side brackets 16 are folded inward, the end of the diagonal support rod 24 with the card slot 27 is lifted upward to make the slide groove 25 disengage from the card slot 27 and enter the slide groove 25, and then the two side brackets 16 are folded inward. During the folding process, the slide groove 27 of the diagonal support rod 24 is driven to slide along the pin 26 to the side away from the card slot 27 to the folded state. Example 3

[0043] The difference between this embodiment and the first embodiment is that: Figure 7 As shown, the guzheng is provided with 21 strings (not shown in the figure), the guzheng body 1 is located at one end of the guzheng head and is set as a hypotenuse 22, the head mountain 2 is parallel to the hypotenuse of the guzheng head, and the hypotenuse angle d is 17°. Example 4

[0044] The difference between this embodiment and the third embodiment is that: Figure 7 As shown, the guzheng is provided with 16 strings, and the angle d of the hypotenuse 22 of the guzheng body 1 at one end of the guzheng head is 20°.

Claims

1. An electric guzheng, characterized by: The electric guzheng adopts a dual pickup system of piezoelectric pickup and MIC pickup, comprising a guzheng body, a whole cavity provided in the guzheng body, a first yueshan and a tail yueshan provided on the guzheng body, a groove provided on the first yueshan, a yueshan bar embedded in the groove, a piezoelectric pickup bar embedded between the yueshan bar and the first yueshan, a circuit board provided in the guzheng body, the circuit board integrating a microprocessor, a first audio amplifier, a second audio amplifier, a MIC pickup, a piezoelectric pickup volume adjustment knob, a MIC pickup volume adjustment knob and a piezoelectric pickup bar interface; The piezoelectric pickup bar is connected to the piezoelectric pickup bar interface, the piezoelectric pickup bar interface is connected to the microprocessor through the first audio amplifier, the piezoelectric pickup volume adjustment knob is connected to the first audio amplifier, the MIC pickup is connected to the microprocessor through the second audio amplifier, and the MIC pickup volume adjustment knob is connected to the second audio amplifier; An audio output interface is also installed in the zither body. The audio output interface is installed in the zither body, and the interface end protrudes from the side wall of the zither body. The audio output interface is connected to the microprocessor. The output total volume adjustment knob and the MIC mixing amount adjustment knob protrude outward from the side wall of the zither body respectively.

2. The electric guzheng according to claim 1, characterized in that: The inner cavity of the zither body adopts an acoustic structure cavity.

3. The electric guzheng according to claim 1, characterized in that: A power supply battery for the electric guzheng is also installed in the guzheng body.

4. The electric guzheng according to claim 1, characterized in that: A receiving groove is provided on the zither body panel, and a tuner with an upper end protruding from the zither body panel is provided in the receiving groove, and the tuner is provided with a display screen.

5. The electric guzheng according to claim 1, characterized in that: The bottom of the zither body is connected to both sides with brackets that can be folded inward for storage. The brackets include two legs arranged at intervals, and a reinforcing connecting rod is connected between the legs. The bottoms of both ends of the zither body are respectively connected to hinge seats. The inner ends of the hinge seats are provided with hinge grooves that cooperate with the legs on both sides of the brackets for hinge connection. The upper ends of the legs are hinged in the hinge grooves. When the brackets on both sides are in the open state, they are in an eight-shape and cooperate with the bottom of the hinge grooves to limit the position.

6. The electric guzheng according to claim 5, characterized in that: A diagonal support rod is connected between the outer side walls of the legs of the two side brackets and the bottom of the zither body. One end of the diagonal support rod is hinged to the bottom of the zither body. The diagonal support rod is provided with a slide groove arranged along the length direction. The slide groove on the diagonal support rod is slidably connected to the legs via a pin. The end of the slide groove away from the hinged end of the diagonal support rod is provided with an upwardly curved slot forming a "J" shape with the slide groove, and the slot is connected to the slide groove. When the two side brackets are in the open state, the diagonal support rod rotates until the slot is locked on the pin on the outside of the support leg; when the two side brackets are in the folded state, the sliding groove of the diagonal support rod is driven to slide along the pin to the side away from the slot to the folded state.

7. The electric guzheng according to claim 5, characterized in that: The hinge seat on one side is connected to the bottom of the zither body through a boss, and the bracket on the other side is flush with the boss when in a folded state.

8. The electric guzheng according to claim 5, characterized in that: The length of the guzheng at its maximum length position is 888 mm, the width at its maximum width position is 249 mm, and the thickness at its maximum thickness position is 80 mm.

9. The electric guzheng according to claim 1, characterized in that: The guzheng is equipped with 21 strings. The guzheng body is located at one end of the guzheng head and is set as a hypotenuse. The Shouyue Mountain is parallel to the hypotenuse of the guzheng head, and the hypotenuse angle is 17°.

10. The electric guzheng according to claim 1, characterized in that: The guzheng is equipped with 16 strings. The guzheng body is located at one end of the guzheng head and is set as a hypotenuse. The Shouyue Mountain is parallel to the hypotenuse of the guzheng head, and the hypotenuse angle is 20°.

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