CN213815506U - Multifunctional sound box wooden guitar - Google Patents

Abstract

The utility model discloses a multi-functional audio amplifier wooden guitar, its characterized in that: comprises a wooden guitar main body, a sound effect adjusting device, a loudspeaker device, an output device and a piezoelectric sound pickup; the sound effect adjusting device comprises a plastic cover, a display screen, a PCBA, a bottom cover plate and a DSP audio processing chip; the PCBA is internally provided with a master control MCU, a prepositive amplification processing module, a tone corrector and display module and three sound effect adjusting circuit modules; and the DSP audio processing chip is provided with a timbre outward expansion micro-processing module and a high-speed DSP synthesis effect processing module. The utility model has the characteristics of high signal-to-noise ratio, high cost performance and high tone quality; the volume is more than 3 times larger than that of the common wooden guitar; the sound with the increased sound effect is more pleasant, dynamic and rich in spatial sense and layering sense; and the advantage of convenient carrying of the common wooden guitar is kept; the use defects of small volume and monotonous tone of the traditional wooden guitar are well overcome.

Description

Multifunctional sound box wooden guitar

Technical Field

The utility model relates to a multi-functional audio amplifier wooden guitar.

Background

Current market state:

1. traditional wooden guitar: most of the current guitars in the market are traditional passive type spontaneous acoustic musical instruments; the sound is generated by the vibration of strings and the resonance of the box body, and the defects of low sound volume and insufficient full tone color exist. When the sound of each string is calibrated, an external sound corrector is needed, and the use is inconvenient; the existing wooden guitar can make a sound, and then a built-in sound box is added, so that the person feels redundant; moreover, the addition of a high-power sound box in the wooden guitar can face a plurality of technical problems: the volume is adjusted too small, so that the value of the sound box cannot be reflected; the volume is adjusted too big, the loudspeaker of the sound box is easy to resonate with the guitar resonator, and the self-excited squeaking sound of buzzing is generated.

2. Electric wooden guitar: when some wooden guitars leave factory, the EQ sound pick-up is additionally arranged, wired output can be realized through a D6.35 port, and the wooden guitars are changed into electric wooden guitars; the sound amplifying system can be externally connected, but an active sound box is required to be externally connected, so that the problem of small volume is solved, but the volume of the wooden guitar and the sound box is large, the sound box needs a power supply, and the outdoor portable application cannot be realized; if the musician needs special timbre, the musician needs to be connected with a special effector externally, and the musician is expensive and more troublesome to use.

Disclosure of Invention

The utility model discloses multi-functional audio amplifier wooden guitar realizes through following technical scheme: comprises a wooden guitar main body, a sound effect adjusting device, a loudspeaker device, an output device and a piezoelectric sound pickup;

the sound effect adjusting device comprises a plastic cover, a display screen, a PCBA, a bottom cover plate and a DSP audio processing chip;

the PCBA is internally provided with a master control MCU, a prepositive amplification processing module, a tone corrector, a display module and three sound effect adjusting circuit modules;

the DSP audio processing chip is provided with a DSP external expansion micro-processing module and a high-speed DSP synthesis effect processing module; a USB charging and charging management module is arranged in the output device;

the USB charging and charging management module is respectively connected with the loudspeaker, the DSP external expansion micro-processing module, the high-speed DSP synthesis effect processing module, the tone corrector, the display module, the main control MCU and the preamplifier module; the DSP external expansion micro-processing module is connected with the high-speed DSP synthesis effect processing module; the high-speed DSP synthesis effect processing module is connected with the three sound effect adjusting circuit modules, and the sound effect adjusting potential module outputs mixed signals outwards; the piezoelectric sound pick-up is connected with the preamplification module; the pre-amplification module is connected with the high-speed effect combining processing module, the master control MCU and the high-speed DSP effect combining processing module, and the master control MCU is connected with the tone corrector and the display module;

the PCBA is arranged in the plastic cover; the display screen is arranged above one side of the plastic cover; the bottom cover plate is arranged on the other side of the plastic cover;

as the preferred technical scheme, the piezoelectric pickup is arranged above the lower end of a string of the wooden guitar body; the sound effect adjusting device is arranged on one side of the wooden guitar main body; the horn device is arranged below the wooden guitar main body; the output device is arranged on the other side of the wooden guitar body;

as a preferred technical scheme, the horn device comprises a horn bottom cover, a horn box body, a horn and a horn panel; the horn box body, the horn and the horn panel are sequentially arranged on the horn bottom cover.

As a preferred technical scheme, the output device comprises a battery box, a battery cover and a battery; the battery is arranged in the battery box, and the battery cover is arranged on the battery box; the battery box is provided with a balance output port and is provided with an output port, an electric quantity indicator light and a charging port.

As the preferred technical scheme, a tone correction button, a power supply and mode key and a working indicator lamp are arranged on one side of the PCBA; the sound corrector and the display module on the PCBA are respectively connected with the sound correcting knob and the display screen, and the display screen is provided with a protective lens; a silk-screen PVC sheet is arranged below the protective lens, and an audio jack is arranged on the bottom cover plate.

The utility model adopts a digital signal audio processing chip DSP, cooperates with an MCU microprocessor, and is added with a high-efficiency digital power amplifier, so that the product has the characteristics of high signal-to-noise ratio, high cost performance and high tone quality; the volume is more than 3 times larger than that of the common wooden guitar; the sound with the increased sound effect is more pleasant, dynamic and rich in spatial sense and layering sense; and the advantage of convenient carrying of the common wooden guitar is kept; the use defects of small volume, monotonous tone and the like of the traditional wooden guitar are well overcome.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an exploded view of the sound effect adjustment apparatus of the present invention;

fig. 3 is an exploded view of the horn device of the present invention;

fig. 4 is an exploded view of the output device of the present invention;

FIG. 5 is a schematic block diagram of the present invention;

FIG. 6 is a schematic diagram of the first circuit of the present invention;

FIG. 7 is a schematic diagram of a circuit of the present invention;

fig. 8 is a third circuit diagram of the present invention;

fig. 9 is a fourth circuit diagram according to the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1-9, the utility model discloses a multi-functional sound box guitar, which comprises a guitar main body 1, an audio adjusting device 2, a speaker device 3, an output device 4 and a piezoelectric pickup 5;

the sound effect adjusting device 2 comprises a plastic cover 2.1, a display screen 2.2, a PCBA2.3, a bottom cover plate 2.4 and a DSP audio processing chip;

a DSP external expansion micro-processing module, a high-speed DSP synthesis effect processing module, a main control MCU, a preposed amplification processing module, a sound corrector, a display module and three sound effect adjusting circuit modules are arranged in the PCBA 2.3;

the DSP audio processing chip is provided with a DSP external expansion micro-processing module and a high-speed DSP synthesis effect processing module; a USB charging and charging management module is arranged in the output device 4;

the USB charging and charging management module is respectively connected with the loudspeaker, the DSP external expansion micro-processing module, the high-speed DSP synthesis effect processing module, the tone corrector, the display module, the main control MCU and the preamplifier module; the DSP external expansion micro-processing module is connected with the high-speed DSP synthesis effect processing module; the high-speed DSP synthesis effect processing module is connected with the three sound effect adjusting circuit modules, and the sound effect adjusting potential module outputs mixed signals outwards; the piezoelectric sound pick-up 5 is connected with the preamplification module; the pre-amplification module is connected with the high-speed effect combining processing module, the master control MCU and the high-speed DSP effect combining processing module, the master control MCU is connected with the tone corrector and the display module, one path of the signal is input to the AD detection port of the main MCU through the pre-amplification module, the signal is converted into a digital signal after analog-to-digital conversion, and the main MCU drives the display screen 2.2 to display the string number, the sound name and the like for a user to calibrate the accuracy of the string; one path of musical instrument signal is input to a digital high-speed DSP processing chip to realize time delay, chorus, reverberation and other sound effect processing, AI intelligent attitude identification and AGC automatic gain control; the processed audio signal and one path of original sound signal of the guitar are merged and then divided into two paths, and one path is directly output to a D6.35 socket or converted into a balanced signal to be output to a cannon port. The other path is output to a CLASS _ D CLASS power amplifier for amplification, and a loudspeaker is driven to produce sound.

The PCBA2.3 is arranged in the plastic cover 2.1; the display screen 2.2 is arranged above one side of the plastic cover 2.1; the bottom cover plate 2.4 is arranged at the other side of the plastic cover 2.1;

in the embodiment, the piezoelectric sound pickup 5 is arranged above the lower end of the string of the wooden guitar body 1; the sound effect adjusting device 2 is arranged on one side of the wooden guitar main body 1; the horn device 3 is arranged below the wooden guitar main body 1; the output device 4 is arranged at the other side of the wooden guitar main body 1; the piezoelectric pickup 5 converts the vibration of the strings into an electric signal.

In this embodiment, the horn device 3 includes a horn bottom cover 3.1, a horn box 3.2, a horn 3.3, and a horn panel 3.4; the horn box 3.2, the horn 3.3 and the horn panel 3.4 are sequentially arranged on the horn bottom cover 3.1.

In this embodiment, the output device 4 includes a battery box 4.1, a battery cover 4.2 and a battery 4.3; the battery 4.2 is arranged in the battery box 4.1, and the battery cover 4.2 is arranged on the battery box 4.1; the battery box 4.1 is provided with a balance output port 4.4 and is provided with an output port 4.5, an electric quantity indicator lamp 4.6 and a charging port 4.7; the lithium battery of the output device supplies power to the DSP, the MCU, the prepositive amplification, the power amplification, the tone corrector and other module circuits through multi-path voltage stabilization.

In the embodiment, one side of the PCBA2.3 is provided with a tone correction button 2.8, a power supply and mode key 2.9 and a working indicator light; a tone corrector and a display module on the PCBA2.3 are respectively connected with a tone correcting knob 2.8 and a display screen 2.2, and a protective lens 2.5 is arranged on the display screen 2.2; a silk-screen PVC sheet 2.6 is arranged below the protective lens 2.5, and an audio jack 2.7 is arranged on the bottom cover plate 2.1.

In addition, the preamplification module is composed of U15B, after a weak signal picked up by the piezoelectric sound pickup 5 is amplified, one path of the weak signal is supplied to the sound corrector, and the other path of the weak signal enters the U6 DSP for sound effect processing, AI intelligent posture recognition, AGC automatic gain control and the like; the road original sound is amplified by U2, and is mixed and amplified with the signal processed by DSP, one path of the processed signal is amplified by U10 and is converted into balanced output for an external sound amplifying system, and the other path of the processed signal is output to CLASS D type power amplifier U1 for amplification after passing through a volume control potentiometer, and drives a loudspeaker to sound; u7 controls the sound effect processing and AI intelligent posture recognition of DSP, AGC automatic gain control, etc., U8 is the main control MCU, used to complete the on/off, low-power detection, A/D conversion, tone corrector processing, etc. VR1, VR2 and VR3 are three wooden guitar sound effect control potentiometers for controlling the size or depth of sound effect, SW4 is on-off, SW3 is a tuner switch; VR4 is the original sound, the mixing ratio adjustment potentiometer of the wooden guitar sound effect, VR5 is the total volume control potentiometer.

The working principle is as follows:

(1) tone corrector mode: after the power button is pressed for a long time to start, a tone corrector switch can be pressed to enter a tone corrector working mode, and the LCD works in the mode, so that the tone level of each string can be calibrated;

(2) active speaker mode: after the power button is pressed to start, the music box works in a sound box mode, and can be played normally; the total volume push button of the wooden guitar, the proportion push button of the original sound and the effect sound, the three sound effect adjusting push buttons of reverberation, time delay and chorus, etc. provide the musician with convenient adjustment and selection; the sound effect depths of the three sound effect adjusting circuit modules can be independently or combined and adjusted, and variable tone effects can be provided; for individual users who only like the original sound of the wooden guitar, the proportion of the original sound and the effect sound can be pushed, the three sound effects are adjusted to be minimum, and the output sound is the pure original sound of the wooden guitar and is output after being amplified by the sound box;

(3) an external output mode: when an external active large-scale sound system is needed, only the D6.35 of the wooden guitar or the Cannon balance output port is connected by a wire, the sound box on the wooden guitar can be automatically closed, and the sound corrector and the effector still work according to the original mode;

the power supply mode comprises the following steps: the wooden guitar is internally provided with a high-capacity lithium battery, and can continuously and normally work for more than 8 hours after being fully charged; during charging, a DC5V 1A mobile phone charger or a mobile power supply is adopted;

the utility model adopts a digital signal audio processing chip DSP, cooperates with an MCU microprocessor, and is added with a high-efficiency digital power amplifier, so that the product has the characteristics of high signal-to-noise ratio, high cost performance and high tone quality; the volume is more than 3 times larger than that of the common wooden guitar; the sound with the increased sound effect is more pleasant, dynamic and rich in spatial sense and layering sense; and the advantage of convenient carrying of the common wooden guitar is kept; the use defects of small volume, monotonous tone and the like of the traditional wooden guitar are well overcome.

The utility model discloses have following characteristic:

1. the multifunctional sound box-wooden guitar is formed by combining a wooden guitar, a guitar sound box, an effector, a tuner and an EQ pickup;

2. the built-in guitar sound box is a 5W professional guitar sound box;

3. the built-in effect device: has the functions of reverberation, delay and chorus; can be adjusted independently or in combination, so that the wooden guitar has better expressive force;

4. friends who like the original sound of the guitar can close the effect and only use the function of the sound box of the guitar;

5. the tone tuning device function is built in, and the tone level of each string is calibrated at any time;

6. portable use, super long operating time: the full working time reaches about 9 hours.

The utility model is suitable for a: personal practice, party performance, street sales, bar chorus, etc.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (5)

1. A multi-functional audio amplifier wooden guitar which characterized in that: comprises a wooden guitar main body (1), a sound effect adjusting device (2), a loudspeaker device (3), an output device (4) and a piezoelectric sound pick-up (5);

the sound effect adjusting device (2) comprises a plastic cover (2.1), a display screen (2.2), a PCBA (2.3), a bottom cover plate (2.4) and a DSP audio processing chip;

a master control MCU, a prepositive amplification processing module, a tone corrector, a display module and three sound effect adjusting circuit modules are arranged in the PCBA (2.3); the DSP audio processing chip is provided with a DSP external expansion micro-processing module and a high-speed DSP synthesis effect processing module; a USB charging and charging management module is arranged in the output device (4);

the USB charging and charging management module is respectively connected with the loudspeaker, the DSP external expansion micro-processing module, the high-speed DSP synthesis effect processing module, the tone corrector, the display module, the main control MCU and the preamplifier module; the DSP external expansion micro-processing module is connected with the high-speed DSP synthesis effect processing module; the high-speed DSP synthesis effect processing module is connected with three sound effect adjusting circuit modules, and the sound effect adjusting potential module outputs mixed signals outwards; the piezoelectric sound pick-up (5) is connected with the pre-amplification module; the pre-amplification module is connected with the high-speed effect combining processing module, the main control MCU and the high-speed DSP effect combining processing module; the master control MCU is connected with the tone corrector and the display module;

the PCBA (2.3) is arranged in the plastic cover (2.1); the display screen (2.2) is arranged above one side of the plastic cover (2.1); the bottom cover plate (2.4) is arranged at the other side of the plastic cover (2.1).

2. The multi-function speaker wooden guitar of claim 1, wherein: the piezoelectric sound pick-up (5) is arranged above the lower end of a string of the wooden guitar body (1); the sound effect adjusting device (2) is arranged on one side of the wooden guitar main body (1); the horn device (3) is arranged below the wooden guitar main body (1); the output device (4) is arranged on the other side of the wooden guitar main body (1).

3. The multi-function speaker wooden guitar of claim 1, wherein: the horn device (3) comprises a horn bottom cover (3.1), a horn box body (3.2), a horn (3.3) and a horn panel (3.4); the loudspeaker box body (3.2), the loudspeaker (3.3) and the loudspeaker panel (3.4) are sequentially arranged on the loudspeaker bottom cover (3.1).

4. The multi-function speaker wooden guitar of claim 1, wherein: the output device (4) comprises a battery box (4.1), a battery cover (4.2) and a battery (4.3); the battery (4.2) is arranged in the battery box (4.1), and the battery cover (4.2) is arranged on the battery box (4.1); the battery box (4.1) is provided with a balance output port (4.4) and is provided with an output port (4.5), an electric quantity indicator lamp (4.6) and a charging port (4.7).

5. The multi-function speaker wooden guitar of claim 1, wherein: one side of the PCBA (2.3) is provided with a tone correction button (2.8), a power supply and mode key (2.9) and a working indicator light; the sound tuner and the display module on the PCBA (2.3) are respectively connected with the sound tuning knob and the display screen, and a protective lens (2.5) is arranged on the display screen (2.2); a silk-screen PVC sheet (2.6) is arranged below the protective lens (2.5), and an audio jack (2.7) is arranged on the bottom cover plate (2.1).

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