Sound equipment for basic singing practice of songs

Abstract

The invention relates to the field of sound equipment, and discloses sound equipment for basic singing practice of songs, which comprises a box body, a high-pitch chamber is arranged on the upper side in the box body, a high-pitch loudspeaker is fixedly mounted on the outer side of the high-pitch chamber, a low-pitch chamber is arranged on the lower side in the box body, a low-pitch loudspeaker is fixedly mounted in the low-pitch chamber, and a loudspeaker is fixedly mounted in the low-pitch chamber. The outer side of the bass chamber is fixedly provided with a radiator, the inner walls of the high pitch chamber and the bass chamber are filled with sound absorption rock wool, the side, close to the high pitch chamber, of the upper side in the box body is provided with an upper labyrinth groove, and the side, close to the bass chamber, of the lower side in the box body is provided with a lower labyrinth groove. A frequency divider is fixedly installed on the inner side wall of the box body. The high-pitch chamber and the low-pitch chamber are independently arranged to ensure pure tone quality, the low-pitch chamber radiator enhances the low-pitch effect, the inner wall sound-absorbing rock wool reduces noise, the convenient lifting structure and the universal wheels are convenient to move and store, and diversified use scenes can be met.

Description

Technical Field

[0001] The invention relates to the field of audio equipment, in particular to an audio equipment used for practicing basic singing skills of songs. Background Art

[0002] Many ordinary KTV sound systems or home audio equipment have low sound reproduction, and the sound is hollow and unreality, and the surface seems to be covered by a thin film. They cannot meet the requirements of vocal training for pure sound quality. Some audio equipment lacks expressiveness in the mid-high frequencies or low frequencies, resulting in weak or dry, dull and powerless sound, making it difficult for singers to achieve the desired effect during practice, and may even affect their judgment of their own singing skills due to equipment limitations.

[0003] When playing music or assisting singing, the high and low parts of some audio equipment easily interfere with each other, resulting in crosstalk, which makes it difficult for singers to clearly distinguish the sound effects of different ranges, which is not conducive to the individual training and mastery of each range. Most audio equipment on the market lacks special functions and modules for vocal training, such as precise filtering and noise reduction, crossover point adjustment, phase compensation, echo reverberation control, and volume balance assistance. This makes it impossible to make personalized sound adjustments according to the specific needs and environment of the singers during vocal training, and it is difficult to create a high-quality singing practice environment.

[0004] Traditional professional audio equipment is usually large in size, heavy in weight, and not easy to move and store, which brings great inconvenience to singers who need to conduct vocal training in different places, such as rehearsal rooms, classrooms, and homes. At the same time, the height and angle of the equipment are often not adjustable, which cannot meet the usage habits and environmental requirements of different singers. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an audio device for practicing basic singing skills of songs, which solves the problems of impure sound quality, crosstalk, poor bass effect, large sound reflection interference, etc. during the practice of basic singing skills of songs, and also solves the problem of the inconvenience of moving and storing the audio equipment.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an audio device for practicing basic singing skills of songs, comprising a box, a treble chamber is opened on the upper inner side of the box, a tweeter is fixedly installed on the outer side of the treble chamber, a bass chamber is opened on the lower inner side of the box, a woofer is fixedly installed inside the bass chamber, a radiator is fixedly installed on the outer side of the bass chamber, the inner walls of the treble chamber and the bass chamber are filled with sound-absorbing rock wool, an upper labyrinth groove is opened on the upper inner side of the box near the treble chamber, and a lower inner side of the box near the bass chamber is opened A lower labyrinth groove is provided, and a crossover is fixedly installed on the inner wall of the box body. The box body also includes a sound quality processing system, which includes an audio processing module, a sound performance module, a sound feedback module and a gain and frequency compensation module. The audio processing module includes a filtering noise reduction unit, a crossover point adjustment unit and a phase compensation unit. The sound performance module includes a sound analysis unit and a dynamic range presentation unit. The sound feedback module includes an echo reverberation unit and a volume balance auxiliary unit. The gain and frequency compensation module includes a graphic equalizer and a parametric equalizer for adjusting the gain of the audio signal.

[0007] Preferably, straight grooves are provided on both sides of the rear of the box body, inner rods are movably installed inside the straight grooves, the top ends of the inner rods are respectively fixedly installed on the two ends of the transverse tie rods and the inner rods are connected to the inside of the transverse tie rods, and a pressure plate is movably provided inside the transverse tie rods.

[0008] Preferably, a button is fixedly mounted on the top of the pressure plate and the top of the button extends to the outside of the tie rod, and the bottom end of the pressure plate is connected to the bottom wall of the tie rod through two first springs.

[0009] Preferably, pressure rods are fixedly installed on both sides of the bottom end of the pressure plate, fixed seats are fixedly installed on the inner bottom of the inner rod, movable seats are movably arranged inside the fixed seats, oblique grooves are opened on both sides of the movable seats, the bottom ends of the pressure rods are fixedly connected to mounting plates, both sides of the bottom ends of the mounting plates are fixedly connected to insertion rods, and the bottoms of the insertion rods are movably arranged inside the oblique grooves on the corresponding sides.

[0010] Preferably, the outer ends of the movable seats are connected to the inner wall of the fixed seat through a second spring, the inner ends of the movable seats are fixedly connected with positioning pins, and the inner walls of the inner ends of the straight grooves are provided with a plurality of positioning holes.

[0011] Preferably, a guide hole is provided at the inner bottom of the box, the end of the guide hole is connected to the outside and a dustproof net is fixedly installed, and universal wheels are fixedly installed at the four corners of the bottom end of the box.

[0012] Preferably, the filtering and noise reduction module includes a high-pass filtering unit, a low-pass filtering unit and a band-pass filtering unit. The high-pass filtering unit uses a capacitor to prevent low-frequency signals from passing through, allowing high-frequency signals to be transmitted smoothly. The inductor and the capacitor form a filtering network to achieve a steeper high-frequency filtering characteristic and more accurately divide the frequency band. The low-pass filtering unit uses an inductor to prevent high-frequency signals and allow low-frequency signals to pass through, and forms a filtering network with the capacitor to adjust the cutoff frequency, slope and phase characteristics of the low-pass filter, so that the filtering of the low-frequency signal is more accurate. The band-pass filtering unit connects an inductor and a capacitor in series, and then connects this series circuit with a resistor. A bandpass filter circuit is formed in parallel to allow signals of a specific frequency band to pass through while attenuating signals of other frequency bands. By adjusting the parameters of the capacitor and inductor, the center frequency, bandwidth and other characteristics of the bandpass filter can be changed to meet the needs of different speakers for signals of specific frequency bands. The crossover point adjustment unit changes the attenuation degree of the filter by connecting resistors in series in the capacitor or inductor branch, thereby adjusting the crossover point between the speaker units, making the connection between the sounds of each frequency band more natural. The phase compensation unit performs phase compensation on signals of different frequency bands, making the sounds emitted by each speaker more matched in phase, thereby improving the positioning and layering of the sound.

[0013] Preferably, the sound analysis unit analyzes the audio signal through an audio decoder and divides the signal according to frequency using a frequency divider. The speaker diaphragm vibrates rapidly under the drive of the signal to convert the electrical signal into a sound signal, thereby achieving high resolution of the sound. The dynamic range presentation unit receives the audio signal through a power amplifier. For small signals, the power amplifier amplifies the signal with a lower gain to maintain the details and clarity of the sound. For large signals, the power amplifier uses its power margin to amplify the signal to a sufficient intensity without distortion. The amplified signal drives the speaker, and the speaker vibrates and sounds according to the frequency and intensity of the signal. The woofer processes the low-frequency dynamic part, and the tweeter processes the high-frequency dynamic changes, thereby jointly presenting the strength changes in the audio signal as complete audible sound dynamics.

[0014] Preferably, the echo reverberation unit includes a DSP chip, which copies and delays the input audio signal for a certain period of time according to a preset reverberation algorithm, and then mixes it with the original signal to simulate the reflection effect of sound in space. At the same time, the DSP chip will output a copy of the audio signal again after a certain time interval to produce an echo effect. The volume balance auxiliary unit performs volume detection on the input audio signal and compares the detected volume information with a preset balance standard. If the volume is found to be unbalanced, the automatic control unit will adjust the gain of the audio signal with a smaller volume by adjusting the volume adjustment circuit (or software) to make the volume of different audio signals reach a balanced state. This process will continue to ensure that the volume is always balanced during audio playback.

[0015] The present invention provides an audio device for practicing basic singing skills of songs. It has the following beneficial effects:

[0016] 1. The present invention effectively prevents crosstalk by independently setting up the tweeter and bass chambers, ensuring pure output of high and low frequencies, providing clear sound quality for basic singing practice, allowing users to accurately capture vocal details of different ranges, and the sound quality processing system is powerful, covering multiple modules such as audio processing, sound performance, sound feedback, gain and frequency compensation. The filtering and noise reduction unit performs precise filtering, the frequency division point adjustment unit makes the frequency bands connect naturally, and the phase compensation unit improves the sound positioning and layering; the sound analysis unit achieves high resolution, and the dynamic range presentation unit fully presents the changes in audio strength; the echo reverberation unit simulates spatial reflection, and the volume balance auxiliary unit ensures that the volume is always balanced, creating a high-quality singing practice environment in all directions.

[0017] 2. The bass chamber of the present invention is equipped with a radiator, which on the one hand enhances the sound waves when the woofer is working and strengthens the low-frequency intensity, allowing users to feel more shocking sound effects when practicing the bass part; on the other hand, the radiator cooperates with the woofer by virtue of its own vibration characteristics to broaden the system's response range to low-frequency signals, making the bass effect fuller and deeper. The inner walls of the tweeter and bass chamber are filled with sound-absorbing rock wool, which effectively absorbs excess noise, reduces sound reflection interference, and further purifies the sound quality, allowing singers to focus on pure singing practice and improve practice efficiency.

[0018] 3. The convenient lifting structure composed of straight grooves on both sides of the rear of the box, inner rods, horizontal tie rods and pressure plates, combined with universal wheels at the bottom, is convenient for movement and storage. Users can easily adjust the height of the box according to their needs. Whether it is used in a rehearsal room, classroom or different corners of the home, it can be easily operated to meet a variety of usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention;

[0020] Figure 2 is a side perspective view of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the internal structure of the straight slot in the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the fixing seat in the present invention;

[0024] Figure 6 It is a structural schematic diagram of the movable seat in the present invention;

[0025] Figure 7 It is a system architecture diagram of the present invention.

[0026] Among them, 1. cabinet; 2. tweeter chamber; 3. tweeter; 4. woofer chamber; 5. woofer; 6. radiator; 7. sound-absorbing rock wool; 8. upper labyrinth groove; 9. lower labyrinth groove; 10. crossover; 11. straight groove; 12. inner rod; 13. horizontal tie rod; 14. pressure plate; 15. button; 16. first spring; 17. pressure rod; 18. fixed seat; 19. movable seat; 20. inclined groove; 21. mounting plate; 22. plug rod; 23. second spring; 24. positioning pin; 25. positioning hole; 26. guide hole; 27. dust net; 28. universal wheel. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example:

[0029] Please see attached Figure 1 -Attached Figure 7 The embodiment of the present invention provides an audio device for practicing basic singing skills of songs, such as Figure 1As shown, the box 1 includes a cabinet 1. The cabinet 1 serves as the outer shell of the entire audio equipment, protecting the internal components and supporting the overall structure. It is made of a sturdy material with a certain sound insulation effect to ensure that it will not be easily damaged during use, while minimizing the interference of external noise on the internal audio system. A tweeter chamber 2 is carefully opened on the upper side of the interior of the box 1. The tweeter chamber 2 is an independent space specially built for the tweeter 3. Its internal structure is specially designed to optimize the propagation path of the treble and reduce the reflection and scattering of the sound. A tweeter 3 is fixedly installed on the outside of the tweeter chamber 2. The tweeter 3 uses a high-quality sound unit and has an excellent high-frequency response capability, which can accurately and clearly restore the sound of the treble part. Frequency signal, so that users can hear delicate and bright sounds when practicing high notes. A bass chamber 4 is opened on the lower side of the interior of the box 1. The spatial layout and acoustic characteristics of the bass chamber 4 are designed according to the principle of bass propagation, aiming to provide an ideal working environment for the bass speaker 5. A bass speaker 5 is fixedly installed inside the bass chamber 4. The bass speaker 5 has a large diaphragm size and a powerful magnetic drive system, which can effectively promote air vibration to produce a deep and thick bass effect. A radiator 6 is fixedly installed on the outside of the bass chamber 4. The radiator 6 is made of special acoustic materials, and its unique vibration mode complements the bass speaker 5. When the bass speaker 5 is working, the radiator 6 can follow its vibration rhythm to further enhance the sound waves. The propagation range and intensity make the bass effect more shocking. The inner walls of the tweeter chamber 2 and the bass chamber 4 are filled with sound-absorbing rock wool 7. The sound-absorbing rock wool 7 is evenly laid on the chamber wall. Its fine fiber structure can effectively capture and absorb the excess noise generated in the process of sound propagation. Whether it is a subtle echo of high frequency or a buzzing sound of low frequency, it can be absorbed by the sound-absorbing rock wool 7 in large quantities, reducing the interference of sound reflection, thereby further purifying the sound quality, allowing the singer to focus on pure singing practice and improve the practice efficiency. An upper labyrinth groove 8 is provided on the upper side of the interior of the box 1 close to the tweeter chamber 2. The upper labyrinth groove 8 is like a carefully designed acoustic maze. Using its complex channel structure, the sound emitted by the tweeter 3 is reflected and reflected multiple times in it. Refraction, after a series of acoustic treatments, the sound is enhanced, not only the volume is improved, but also the tone is rounder and fuller. A lower labyrinth groove 9 is provided on the lower side of the interior of the cabinet 1 near the bass chamber 4. The lower labyrinth groove 9 also plays a vital optimization role in the bass. It can extend the propagation path of the bass, allowing the bass to fully reverberate and overlap in the groove, thereby enhancing the texture and depth of the bass. A crossover 10 is fixedly installed on the inner wall of the cabinet 1. The crossover 10 is like a precise audio commander, which can accurately distribute the audio signal to the tweeter 3 and the woofer 5 according to the frequency of the audio signal, ensuring that each speaker can work in the frequency range that suits it best and give full play to its best performance. It also includes a sound quality processing system.The sound quality processing system includes an audio processing module, a sound performance module, a sound feedback module, and a gain and frequency compensation module. The audio processing module includes a filter noise reduction unit, a crossover point adjustment unit, and a phase compensation unit. The sound performance module includes a sound analysis unit and a dynamic range presentation unit. The sound feedback module includes an echo reverberation unit and a volume balance auxiliary unit. The gain and frequency compensation module includes a graphic equalizer and a parametric equalizer, which are used to adjust the gain of the audio signal. These modules work together like a professional audio processing team to comprehensively improve the sound quality performance of audio equipment.

[0030] The inner rod 12 is movably installed inside the straight groove 11, and the inner rod 12 can slide up and down freely in the straight groove 11, and the matching accuracy with the straight groove 11 is extremely high, ensuring that there will be no shaking or jamming during the lifting process. The top ends of the inner rod 12 are respectively fixedly installed at the two ends of the transverse tie rod 13, and the inner rod 12 is connected to the inside of the transverse tie rod 13. The transverse tie rod 13 serves as a bridge connecting the inner rods 12 on both sides, which not only plays a role of fixing and supporting, but also facilitates the user to synchronously control the inner rods 12 on both sides by operating the transverse tie rod 13. The interior of the transverse tie rod 13 is movably provided with a pressure plate 14, which can flexibly move up and down in the transverse tie rod 13, and is a key trigger component in the entire lifting and locking mechanism.

[0031] Furthermore, a button 15 is fixedly mounted on the top of the pressure plate 14 and the top of the button 15 extends to the outside of the transverse tie rod 13. The button 15 is designed to be easy to press with fingers, and its surface usually has a certain anti-slip texture to prevent the user's hand from slipping when pressing. The bottom end of the pressure plate 14 is connected to the bottom wall of the transverse tie rod 13 through two first springs 16. The first springs 16 are always in a compressed state, providing an upward elastic force for the pressure plate 14. When the button 15 is pressed, the elastic force of the first springs 16 is overcome to move the pressure plate 14 downward. Once the button 15 is released, the first springs 16 will quickly bounce the pressure plate 14 back to its original position, realizing the automatic reset function.

[0032] Furthermore, pressure rods 17 are fixedly installed on both sides of the bottom end of the pressure plate 14. The pressure rods 17 move synchronously with the up and down movement of the pressure plate 14. The material has a certain rigidity and can stably transmit force. A fixed seat 18 is fixedly installed on the inner bottom of the inner rod 12. The fixed seat 18 provides a stable support foundation for the installation and movement of the subsequent movable seat 19. A movable seat 19 is movably arranged inside the fixed seat 18. The movable seat 19 can slide left and right in the fixed seat 18, and inclined grooves 20 are provided on both sides. The design of the inclined groove 20 cleverly converts the vertical movement of the pressure rod 17 into the horizontal movement of the movable seat 19. The bottom end of the pressure rod 17 is fixedly connected to a mounting plate 21, and the mounting plate 21 plays a role of connection and transition. The bottom end of the mounting plate 21 is fixedly connected to an insertion rod 22 on both sides. The bottom of the insertion rod 22 is movably arranged inside the corresponding side inclined groove 20. When the pressure rod 17 moves downward, the insertion rod 22 slides in the inclined groove 20 to push the movable seat 19 to move inward.

[0033] Furthermore, the outer ends of the movable seats 19 are connected to the inner walls of the fixed seats 18 through second springs 23. The second springs 23 provide an outward elastic force for the movable seats 19 so that they can remain in their initial positions when not subject to external forces. The inner ends of the movable seats 19 are fixedly connected with positioning pins 24. The positioning pins 24 serve as locking components and can be accurately inserted into positioning holes 25 on the inner walls of the inner ends of the straight grooves 11 to achieve limited fixation of the inner rod 12. A number of positioning holes 25 are provided on the inner walls of the inner ends of the straight grooves 11. The arrangement of a number of positioning holes 25 provides locking positions of different heights for the inner rod 12. The user can select a suitable height for fixing according to actual needs.

[0034] Furthermore, a guide hole 26 is provided at the inner bottom of the box 1. The guide hole 26 serves to ventilate and dissipate heat as well as balance the air pressure inside and outside the box. The aperture size is precisely calculated to ensure smooth air circulation without affecting the overall structural strength of the box 1. The end of the guide hole 26 is connected to the outside and a dustproof net 27 is fixedly installed thereon. The dustproof net 27 is made of a fine filter material, which can effectively block external dust and debris from entering the inside of the box 1 and protect the internal electronic components and acoustic components from pollution. Universal wheels 28 are fixedly installed at the four corners of the bottom of the box 1. The universal wheels 28 have a 360-degree rotation function, which allows the user to easily push the box 1 in different directions. Whether it is on the flat floor of the rehearsal room, the classroom corridor or the floor at home, it can be flexibly turned to meet a variety of usage scenarios.

[0035] Furthermore, the filtering and noise reduction module includes a high-pass filtering unit, a low-pass filtering unit and a band-pass filtering unit. The high-pass filtering unit uses a capacitor to prevent low-frequency signals from passing through and allows high-frequency signals to be transmitted smoothly. The combination of inductors and capacitors forms a filtering network to achieve steeper high-frequency filtering characteristics and more accurate frequency band division. The low-pass filtering unit uses an inductor to prevent high-frequency signals and allow low-frequency signals to pass through, and forms a filtering network with capacitors to adjust the cutoff frequency, slope and phase characteristics of the low-pass filter, so that the filtering of low-frequency signals is more accurate. The band-pass filtering unit connects an inductor and a capacitor in series, and then connects this series circuit in parallel with a resistor. The circuit is connected to form a band-pass filter circuit, which allows signals of a certain frequency band to pass through while attenuating signals of other frequency bands. By adjusting the parameters of the capacitor and inductor, the center frequency, bandwidth and other characteristics of the band-pass filter can be changed to adapt to the needs of different speakers for signals of specific frequency bands. The crossover point adjustment unit changes the attenuation degree of the filter by connecting resistors in series in the capacitor or inductor branch, thereby adjusting the crossover point between the speaker units, making the connection between the sounds of each frequency band more natural. The phase compensation unit performs phase compensation on signals of different frequency bands, making the sounds emitted by each speaker more matched in phase, thereby improving the positioning and layering of the sound.

[0036] Furthermore, the sound analysis unit analyzes the audio signal through an audio decoder and divides the signal according to frequency using a crossover. The speaker diaphragm vibrates rapidly under the drive of the signal to convert the electrical signal into a sound signal, thereby achieving high resolution of the sound. The dynamic range presentation unit receives the audio signal through a power amplifier. For small signals, the power amplifier amplifies them with a lower gain to maintain the details and clarity of the sound. For large signals, the power amplifier uses its power margin to amplify the signal to a sufficient intensity without distortion. The amplified signal drives the speaker, and the speaker vibrates and makes sound according to the frequency and intensity of the signal. The woofer processes the low-frequency dynamic part, and the tweeter processes the high-frequency dynamic changes, together presenting the strength changes in the audio signal as audible sound dynamics.

[0037] Furthermore, the echo reverberation unit includes a DSP chip. The DSP chip copies and delays the input audio signal for a certain period of time according to a preset reverberation algorithm, and then mixes it with the original signal to simulate the reflection effect of sound in space. At the same time, the DSP chip will output a copy of the audio signal again after a certain time interval to produce an echo effect. The volume balance auxiliary unit detects the volume of the input audio signal and compares the detected volume information with the preset balance standard. If the volume is found to be unbalanced, the automatic control unit will adjust the gain of the audio signal with a smaller volume by adjusting the volume adjustment circuit (or software) to balance the volume of different audio signals. This process will continue to ensure that the volume is always balanced during audio playback.

[0038] Working principle: first, the user needs to grab the cross tie rod 13 and press the button 15 with his finger. When the button 15 descends, since it is fixedly connected to the pressure plate 14, it will directly drive the pressure plate 14 to descend. The pressure plate 14 moves downward smoothly under the elastic force of the first spring 16, thereby driving the pressure rods 17 on both sides to descend synchronously. When the pressure rod 17 descends, the mounting plate 21 at its bottom and the insertion rods 22 fixed on both sides of the bottom end of the mounting plate 21 will also descend accordingly. When the insertion rod 22 descends, the end of the insertion rod 22 will slide in the inclined groove 20. The special inclination angle design of the inclined groove 20 enables the vertical movement of the insertion rod 22 to be converted into the horizontal inward movement of the movable seat 19, thereby driving the movable seat 19 to move inward, and then driving the positioning pin 24 to follow the movement, so that the positioning pin 24 is retracted into the straight groove 11. At this time, the positioning hole 25 releases the limiting effect on the positioning pin 24, and the inner rod 12 is no longer restricted. At this time, the user can pull up the cross tie rod 13 to drive the inner rod 12 along the straight groove 11 When the box 1 is lifted up to a certain height, the button 15 is released, and the first spring 16 will quickly exert its elastic force to drive the pressure plate 14 and the pressure rod 17 to rise and reset. At the same time, the second spring 23 pops the movable seat 19 outward, so that the positioning pin 24 extends from the new positioning hole 25 again, thereby limiting the inner rod 12. At this time, the box body 1 can be dragged to move with the universal wheel 28. When storing, the inner rod 12 and the horizontal tie rod 13 can be lowered and reset by repeating the above steps. When using the audio system, the woofer 5 and the tweeter 3 both have unique bass chambers 4 and treble chambers 2, which can prevent crosstalk during singing training. At the same time, their respective labyrinth grooves are set to enhance the audio emitted by the speakers and improve the sound quality. At the same time, a radiator 6 is set on the front side of the woofer 5. The radiator 6 can enhance the sound waves generated by the woofer 5 when it is working, enhance the low-frequency intensity and bass effect, and at the same time, the radiator 6 can work in coordination with the woofer 5 through its own vibration characteristics, so that the entire system can respond to lower frequency signals.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An audio device for practicing basic singing skills, comprising a box (1), characterized in that: A tweeter chamber (2) is provided on the upper inner side of the box (1), a tweeter (3) is fixedly mounted on the outer side of the tweeter chamber (2), a bass chamber (4) is provided on the lower inner side of the box (1), a bass speaker (5) is fixedly mounted on the inner side of the bass chamber (4), a radiator (6) is fixedly mounted on the outer side of the bass chamber (4), the inner walls of the tweeter chamber (2) and the bass chamber (4) are filled with sound-absorbing rock wool (7), an upper labyrinth groove (8) is provided on the upper inner side of the box (1) close to the tweeter chamber (2), a lower labyrinth groove (9) is provided on the lower inner side of the box (1) close to the bass chamber (4), and a frequency divider (10) is fixedly mounted on the inner wall of the box (1); It also includes a sound quality processing system, which includes an audio processing module, a sound performance module, a sound feedback module and a gain and frequency compensation module. The audio processing module includes a filtering noise reduction unit, a crossover point adjustment unit and a phase compensation unit. The sound performance module includes a sound analysis unit and a dynamic range presentation unit. The sound feedback module includes an echo reverberation unit and a volume balance auxiliary unit. The gain and frequency compensation module includes a graphic equalizer and a parametric equalizer for adjusting the gain of the audio signal.

2. The audio equipment for practicing basic singing skills of songs according to claim 1, characterized in that: Straight grooves (11) are provided on both sides of the rear of the box body (1), and inner rods (12) are movably installed inside the straight grooves (11). The top ends of the inner rods (12) are respectively fixedly installed on the two ends of the transverse tie rod (13), and the inner rods (12) and the interiors of the transverse tie rod (13) are interconnected. A pressure plate (14) is movably provided inside the transverse tie rod (13).

3. The audio equipment for practicing basic singing skills of songs according to claim 2, characterized in that: A button (15) is fixedly mounted on the top of the pressure plate (14), and the top of the button (15) extends to the outside of the transverse tie rod (13). The bottom end of the pressure plate (14) is connected to the bottom wall of the transverse tie rod (13) via two first springs (16).

4. The audio equipment for practicing basic singing skills of songs according to claim 2, characterized in that: A pressure rod (17) is fixedly installed on both sides of the bottom end of the pressure plate (14); a fixed seat (18) is fixedly installed on the inner bottom of the inner rod (12); a movable seat (19) is movably arranged inside the fixed seat (18); inclined grooves (20) are opened on both sides of the movable seat (19); the bottom end of the pressure rod (17) is fixedly connected to a mounting plate (21); both sides of the bottom end of the mounting plate (21) are fixedly connected to an insertion rod (22); the bottom of the insertion rod (22) is movably arranged inside the inclined groove (20) on the corresponding side.

5. The audio equipment for practicing basic singing skills of songs according to claim 4, characterized in that: The outer ends of the movable seats (19) are connected to the inner wall of the fixed seats (18) via second springs (23), the inner ends of the movable seats (19) are fixedly connected with positioning pins (24), and the inner walls of the inner ends of the straight grooves (11) are provided with a plurality of positioning holes (25).

6. The audio equipment for practicing basic singing skills of songs according to claim 1, characterized in that: A guide hole (26) is provided at the inner bottom of the box body (1), the end of the guide hole (26) is connected to the outside and a dustproof net (27) is fixedly installed thereon, and universal wheels (28) are fixedly installed at the four corners of the bottom end of the box body (1).

7. The audio equipment for practicing basic singing skills of songs according to claim 1, characterized in that: The filtering and noise reduction module includes a high-pass filtering unit, a low-pass filtering unit and a band-pass filtering unit. The high-pass filtering unit uses a capacitor to prevent low-frequency signals from passing through and allows high-frequency signals to be transmitted smoothly. The combination of inductors and capacitors forms a filtering network to achieve steeper high-frequency filtering characteristics and more accurate frequency band division. The low-pass filtering unit uses an inductor to prevent high-frequency signals and allow low-frequency signals to pass through, and forms a filtering network with capacitors to adjust the cutoff frequency, slope and phase characteristics of the low-pass filter, so that the filtering of low-frequency signals is more accurate. The band-pass filtering unit connects an inductor and a capacitor in series, and then connects this series circuit in parallel with a resistor. A bandpass filter circuit is constructed to allow signals of a certain frequency band to pass through while attenuating signals of other frequency bands. By adjusting the parameters of the capacitor and the inductor, the center frequency, bandwidth and other characteristics of the bandpass filter can be changed to meet the needs of different speakers for signals of a specific frequency band. The crossover point adjustment unit changes the attenuation degree of the filter by connecting a resistor in series in the capacitor or inductor branch, thereby adjusting the crossover point between the speaker units, making the connection between the sounds of each frequency band more natural. The phase compensation unit performs phase compensation on signals of different frequency bands, making the sounds emitted by each speaker more matched in phase, thereby improving the positioning and layering of the sound.

8. The audio equipment for practicing basic singing skills of songs according to claim 1, characterized in that: The sound analysis unit analyzes the audio signal through an audio decoder and divides the signal according to frequency using a frequency divider. The speaker diaphragm vibrates rapidly under the drive of the signal to convert the electrical signal into a sound signal, thereby achieving high resolution of the sound. The dynamic range presentation unit receives the audio signal through a power amplifier. For small signals, the power amplifier amplifies the signal with a lower gain to maintain the details and clarity of the sound. For large signals, the power amplifier uses its power margin to amplify the signal to a sufficient intensity without distortion. The amplified signal drives the speaker, and the speaker vibrates and sounds according to the frequency and intensity of the signal. The woofer processes the low-frequency dynamic part, and the tweeter processes the high-frequency dynamic changes, thereby jointly presenting the strength changes in the audio signal as audible sound dynamics.

9. The audio equipment for practicing basic singing skills of songs according to claim 1, characterized in that: The echo reverberation unit includes a DSP chip. The DSP chip copies and delays the input audio signal for a certain period of time according to a preset reverberation algorithm, and then mixes it with the original signal to simulate the reflection effect of sound in space. At the same time, the DSP chip will output a copy of the audio signal again after a certain time interval to produce an echo effect. The volume balance auxiliary unit detects the volume of the input audio signal and compares the detected volume information with the preset balance standard. If the volume is found to be unbalanced, the automatic control unit will adjust the gain of the audio signal with a smaller volume by adjusting the volume adjustment circuit (or software) to make the volume of different audio signals reach a balanced state. This process will continue to ensure that the volume is always balanced during audio playback.

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