453 results about "High pitch" patented technology

The present invention provides a coaxial speaker including a fixing member, a magnetic circuit system, a voice coil, a first vibration system connected with the voice coil, and a second vibration system connected with the voice coil and arranged surrounding the first vibration system. The second vibration system locates coaxially with the first vibration system. The first vibration system includes a first diaphragm and a first support connecting the first diaphragm and the voice coil. The second vibration system includes a second diaphragm and a second support connecting the second diaphragm and the voice coil. The first diaphragm is used for generating treble sound. The second diaphragm is used for generating bass sound. Bass sound and treble sound form a full-range speaker, providing high-quality sound. Moreover, the assembly process is simplified by sharing voice coil, which improves assembly efficiency and reduces costs.

A method and apparatus comprising computer code configured to cause a processor or processors to receive an audio signal obtained from a microphone, input the audio signal into a neural-network pipeline, the neural-network pipeline including a convolutional network that receives the audio signal and provides a first output of the convolutional network to an enhancer, the enhancer including a deep complex convolutional recurrent network that receives the first output along with a mel spectrogram of the audio signal and outputs a second output to at least one of a vocoder and a decoder, and control an output of an enhanced audio signal from the at least one of the vocoder and the decoder.

The invention discloses a song teaching template generation method and system, equipment and a program product. The method comprises the following steps: acquiring song audio information of a target song audio; wherein the song audio information comprises lyrics, lyric timestamps, time points corresponding to paragraphs and audio representation information; performing various intra-sentence teaching feature analysis on the lyric timestamps and the audio representation information of the target song audio, and marking various analyzed intra-sentence teaching features on lyrics; wherein the in-sentence teaching features comprise at least one of accent, treble, long tone, tremolo, gliding and breathing points; the singing difficulty feature comprises at least one of high pitch and long pitch; the skill features comprise at least one of tremolo and glide; on the basis of the time point corresponding to each paragraph and the audio representation information, performing in-segment teaching feature marking on the loudness gradient part of each paragraph in the lyrics of the target song audio; and generating a song teaching template based on the marked lyrics of the target song audio and outputting the song teaching template.

The application provides a sound amplification sound column with adjustable vertical direction. The sound column comprises multiple coaxial cylindrical wave mid-high sound boxes arranged vertically, a sound box connecting mechanism, and a sound column direction adjusting mechanism. The sound box comprises a box with a trapezoidal vertical section and a coaxial cylindrical wave mid-high module installed on the panel of the box. The coaxial cylindrical wave mid-high module comprises a midrange horn, a high-frequency module, and a midrange phase plate. The high-frequency module is embedded in the midrange phase plate, and the midrange phase plate is placed on the midrange horn. The sound column is composed of multiple coaxial cylindrical wave mid-high sound boxes arranged vertically, and the curvature of the cylindrical wave is accurately controlled through the connecting mechanism and the adjusting mechanism to realize continuous adjustment of the vertical direction.

A method and apparatus comprising computer code configured to cause a processor or processors to receive an audio signal obtained from a microphone, input the audio signal into a neural-network pipeline, the neural-network pipeline including a convolutional network that receives the audio signal and provides a first output of the convolutional network to an enhancer, the enhancer including a deep complex convolutional recurrent network that receives the first output along with a mel spectrogram of the audio signal and outputs a second output to at least one of a vocoder and a decoder, and control an output of an enhanced audio signal from the at least one of the vocoder and the decoder.

The utility model discloses a miniature loudspeaker, which comprises a frame, a first vibration assembly, a magnetic circuit assembly and a plurality of second vibration assemblies, and is characterized in that the first vibration assembly is arranged on one side of the frame and comprises a first diaphragm assembly and a plurality of first voice coils connected to the first diaphragm assembly; the magnetic circuit assembly is arranged on the other side of the basin frame and comprises a yoke and a plurality of central magnetic structures arranged corresponding to the hollow area of the first voice coil, the yoke is provided with a window, the central magnetic structures correspond to the window, each central magnetic structure comprises a magnetic steel structure, an upper washer and a magnetic conductive plate, and the magnetic conductive plates are located at the windows; the magnetic steel structure comprises a central main magnetic steel and a central auxiliary magnetic steel, a linear gap is formed between the central main magnetic steel and the central auxiliary magnetic steel, the central main magnetic steel is connected with the magnetic conductive plate and the upper washer, the upper washer is located above the central main magnetic steel, and the central auxiliary magnetic steel is connected with the upper washer, the yoke and the magnetic conductive plate. The miniature loudspeaker is excellent in high-pitch effect and low-pitch effect.

1. Name of the product in this design: Knob Controller (RYYT003). 2. Application of this design: This design is used for powering on / off, volume control, treble adjustment, bass adjustment, left and right channel balance, and vibration amplitude adjustment and control of audio equipment. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention provides a carbon fiber composite voice diaphragm as well as a preparation method and application thereof. The carbon fiber composite voice diaphragm is prepared from the following components in parts by mass: 85-95 parts of carbon fibers, 5-15 parts of aramid nanofibers, 5-15 parts of epoxy resin and 1.5-4.5 parts of a curing agent. According to the invention, the carbon fiber is used as a main base material, the aramid nanofiber is used as a filling reinforcing material, and the thickness of the carbon fiber composite voice diaphragm is thinner through the design and combination of materials and processes, so that the thickness limitation of carbon fiber woven cloth and carbon fiber prepreg raw materials is broken through. The carbon fiber composite voice diaphragm is high in strength, high in Young modulus, suitable in loss factor and moderate in damping, and when the carbon fiber composite voice diaphragm is applied to a high-pitch dome loudspeaker, the loudspeaker is good in transient responsiveness, high in energy conversion efficiency and high in sensitivity, segmentation vibration and phase distortion of a unit can be reduced, and the frequency response range of the unit can be widened.

The invention discloses a signal processing method and device, a storage medium and electronic equipment, and relates to the technical field of audio processing. The method comprises the following steps: receiving a target audio signal; dividing the target audio signal into N sub-signals based on the signal type of the target audio signal; when the target audio signal is a microphone signal, respectively inputting S sub-signals greater than the first frequency division point in the N sub-signals into S loudspeakers for output, and inputting N-S sub-signals into the same loudspeaker for output; and when the target audio signal is a music signal, respectively inputting T sub-signals greater than the second frequency division point in the N sub-signals into T loudspeakers for output, and inputting N-T sub-signals into the same loudspeaker for output. The karaoke sound box solves the technical problem that when an existing karaoke sound box uses a single type of high-pitch loudspeaker, large dynamic human voice output during karaoke and high-frequency detail reduction during music playing cannot be met at the same time.

A multimedia device having a housing that includes a display screen, two tweeters, two mid-range drivers, and two woofers, which are integrated into the housing. Both woofers are disposed at a first distance from a center vertical axis of the housing in opposite horizontal directions, both tweeters are disposed at a second distance from the center vertical axis in the opposite horizontal directions, and both mid-range drivers are disposed at a third distance from the center vertical axis in opposite horizontal directions. In addition, both the first and second distances are greater than the third distance.

The utility model provides a double-ring waveguide horn sound box, which comprises a sound box shell, a bass assembly comprises a bass loudspeaker and a bass waveguide horn, the bass loudspeaker is arranged on the sound box shell in a penetrating manner, the bass waveguide horn is arranged on the bass loudspeaker and is positioned at one end of the bass loudspeaker, which is positioned outside the sound box shell, and the bass waveguide horn is positioned at the other end of the bass loudspeaker. The high-pitch assembly comprises a high-pitch loudspeaker and a high-pitch waveguide horn, the high-pitch loudspeaker is arranged on the sound box shell in a penetrating manner, the high-pitch waveguide horn is arranged on the high-pitch loudspeaker and located at one end, located outside the sound box shell, of the high-pitch loudspeaker, and the low-pitch waveguide horn and the high-pitch waveguide horn are arranged on the sound box shell in a staggered and superposed manner. According to the utility model, the bass waveguide horns and the treble waveguide horns are arranged on the sound box shell in a staggered and superposed manner, so that the up-down propagation direction of treble is compressed by bass, and the propagation direction of the treble is transversely diffused, thereby enabling the transverse diffusion of the treble to be wider, further increasing the listening position of the sound box, and improving the listening effect of the sound box. And the hearing feeling of the user is improved.

The invention relates to a loudspeaker unit for arrangement in a motor vehicle, a method for producing the loudspeaker unit, a covering element with the loudspeaker unit and a motor vehicle which has at least one loudspeaker unit or a covering element. The loudspeaker unit (1) is intended for arrangement in a motor vehicle and comprises a tweeter (10) and a support element (20) with a grid structure (30) and an upper material (40) connected to the support element (20).

A new high-fidelity speaker includes a cabinet outer wall, a front partition and a side partition, the front partition and the side partition are arranged in the cabinet outer wall, the side edge of the front partition abuts against the side partition, the remaining edges of the front partition abut against the inner surface of the cabinet outer wall, the internal space surrounded by the cabinet outer wall is divided into a mid-high sound cavity, a bass cavity and a sound guide cavity, one side of the side partition is the sound guide cavity, and the opposite side is the mid-high sound cavity and the bass cavity, a high-pitched speaker port and at least one medium-pitched speaker are opened on the cabinet outer wall part corresponding to the mid-high sound cavity to install the speakers; a bass sound guide port is opened on the cabinet outer wall part corresponding to the sound guide cavity, the bass sound guide port is adjacent to the aforementioned at least two openings distributed on both sides of the side partition; the part of the side partition corresponding to the bass cavity is opened with a bass port to install a bass speaker towards the sound guide cavity, and the bass cavity forms a closed cavity. The speaker has good bass diving, sound image positioning, resolution and small space size.

The invention relates to the technical field of vehicle-mounted electronic products, in particular to a vehicle-mounted sound box with an adjusting function, which comprises a sound box body with a concave part on the surface, and further comprises a movable seat mechanism for bearing the sound box body; the through groove is formed in the surface of the automobile center console and is used for providing a space for the movable seat mechanism to move up and down; the shielding mechanism is made of an elastic material, and the shielding mechanism is arranged in a gap between the movable seat mechanism and the through groove; the double-motor driving system is integrated through the adjusting mechanism, the first motor drives the screw rod to rotate through the transmission rod and the bevel gear to achieve stable lifting of the seat body, the second motor drives the vertical column to rotate through the gear and cooperates with the ferrule to achieve horizontal steering of the loudspeaker box body, and a user is allowed to adjust the height according to the listening habit. The high-pitch directivity and low and medium-frequency sound field distribution are optimized, the problems of high-pitch dispersion and fuzzy positioning are solved, and the immersion and definition of audio experience in a vehicle are remarkably improved.

The invention discloses a sound production module and electronic equipment, the sound production module comprises a module shell, a sound production single body and a retaining wall structure, and the side part of the module shell is provided with a sound outlet hole; the sound production monomer is arranged in the module shell and is matched with the module shell to form a front sound cavity communicated with the sound outlet hole; the retaining wall structure at least comprises a first shielding part located on the side, close to the sound outlet hole, of the sound guide hole, a sound cavity corresponding to and communicated with the sound guide hole is formed in the side, away from the sound outlet hole, of the first shielding part, and sound transmission channels corresponding to the bass radiation area are formed between the two ends, in the extending direction, of the first shielding part and the inner side face of the module shell. The two sound transmission channels are communicated with the sound cavity, and sound waves generated by the high-pitch vibrating diaphragm assembly are transmitted into the sound cavity through the sound guide hole, are transmitted through the two sound transmission channels, and then are transmitted out through the sound outlet hole. While ensuring that the audible sound frequency band performance is not reduced, the high pitch is effectively expanded to the ultrasonic frequency band, the ultrasonic frequency band performance is effectively improved, the high-frequency performance can be improved, the sound quality is improved, and the low-frequency performance is not influenced.

The utility model provides electronic equipment, and belongs to the technical field of electronic terminals, and the electronic equipment comprises a housing, a display screen and a sound transmission structure. Wherein the shell is provided with an internal cavity; the display screen is located on the shell and provided with a first face and a second face, and the second face faces the inner cavity. The sound transmission structure comprises at least one sound outlet hole, and the sound outlet hole is communicated with the inner cavity and located in a gap between the first face of the display screen and the shell. And the rest gap between the first surface and the shell is sealed by a filling piece. In this way, the internal space of the electronic equipment can be reasonably utilized, and the sound output mode of the electronic equipment is improved. By using the directivity characteristic of high frequency, the medium-high frequency sensitivity of the electronic equipment towards one side of the user is improved, so that the user obtains better use experience. Besides, under the condition that the external sound quality effect of the electronic equipment is good, the number of the high-pitch loudspeaker units can be reduced, so that the purpose of reducing the cost is achieved.

The utility model discloses a miniature loudspeaker, which comprises a basin stand, a magnetic circuit assembly, a treble vibration assembly, a bass vibration assembly and a conducting FPC (Flexible Printed Circuit), the magnetic circuit assembly comprises yokes and central magnetic structures respectively arranged on the yokes, and each central magnetic structure comprises a lower magnetic steel, a central washer and an annular upper magnetic steel which are sequentially stacked and connected from bottom to top; the central washer is provided with a protruding hollow convex hull, and the hollow convex hull is located in the hollow area of the annular upper magnetic steel. The high-pitch vibration assembly comprises a high-pitch vibrating diaphragm assembly and a high-pitch voice coil which are connected, the high-pitch vibrating diaphragm assembly is connected with the annular upper magnetic steel, and the high-pitch voice coil is arranged corresponding to the high-pitch magnetic gap; the whole conductive FPC is in a [shape. The conductive FPC comprises a first arm, a second arm and a third arm which are connected in sequence. The top of the hollow convex hull and the lower magnetic steel are respectively provided with a through hole for the second arm to penetrate through, the first arm is fixed on the top surface of the hollow convex hull, and the third arm is fixed on the bottom surface of the lower magnetic steel. The miniature loudspeaker is thin in thickness and good in acoustic performance.

A kind of sound box, including cabinet and the protective cover being arranged in the front of cabinet, first acoustic cavity is equipped in the cabinet, high pitch loudspeaker assembly and bass horn assembly are equipped on the first acoustic cavity, second acoustic cavity is also equipped in the cabinet, the first acoustic cavity is communicated with second acoustic cavity by loudspeaker pipe passing through partition, the loudspeaker pipe is fixedly connected with cabinet, one end of the loudspeaker pipe is arranged in the back of high pitch loudspeaker assembly, the other end of the loudspeaker pipe is inserted into second acoustic cavity. By adding a second acoustic cavity in the cabinet and the loudspeaker pipe that is communicated with the first acoustic cavity and the second acoustic cavity, and one end of the loudspeaker pipe is arranged in the back of the high pitch loudspeaker assembly, the manufacturer selects loudspeaker pipe with different pipe diameter and different length according to actual situation, so that the inside of the loudspeaker pipe helps the reflection and resonance of sound waves, so that the utility model shows more rich tone, and then the sound performance comparable to real musical instrument.

A coaxial speaker includes a tweeter assembly, a woofer assembly, and a frame. The tweeter assembly is used to generate treble sound with a primary propagation direction along a first direction. The woofer assembly is used to generate bass sound with a primary propagation direction along the first direction. The woofer assembly includes a sound guide portion, which faces the tweeter assembly. The treble sound generated by the tweeter assembly, having a primary propagation direction along the first direction, is guided by the sound guide portion to propagate in a second direction. The tweeter assembly and woofer assembly are coaxially arranged, and the second direction is different from the first direction. The tweeter assembly and woofer assembly are mounted on the frame.

A coaxial speaker including a basket frame, a magnetic circuit system, a woofer vibration system, and a tweeter vibration system. The magnetic circuit system is provided with a cavity, a tweeter magnetic gap, and a woofer magnetic gap. The woofer vibration system includes a woofer diaphragm and a woofer voice coil. The tweeter vibration system includes a tweeter diaphragm and a tweeter voice coil. The woofer magnetic gap includes a first magnetic gap and a second magnetic gap, and the woofer voice coil includes a first voice coil and a second voice coil. The magnetic circuit system includes a magnetic yoke, a main magnetic portion, a first sub-magnetic portion, and a second sub-magnetic portion. The main magnetic portion includes a first magnet, a second magnet, a third magnet, and a main pole core. The main core includes a first plate portion, a second plate portion, and a wall portion.

A dampener for a banjo that attenuates unwanted overtones / reverberation while preserving the all-important fundamental sound with minimal reduction in bass, treble and volume. The dampener has a cylindrical outer shell having a diameter of about two inches and a length corresponding to the inner arc of the banjo. The cylindrical outer shell is formed from a cotton poplin fabric, and the filling comprises polyester fibers.

The utility model discloses a height calibration device for an aluminum total gear of a vertical piano action. The height calibration device comprises a calibration platform, a first calibration block and a second calibration block, the calibration platform is provided with a calibration plane, the calibration plane is horizontally arranged, the bass support, the alto support and the high-pitch support are sequentially and vertically arranged on the calibration plane, the first calibration block and the second calibration block are arranged on the calibration plane, the first calibration block is located between the bass support and the alto support, and the second calibration block is located between the alto support and the high-pitch support. The aluminum total gear is placed on the upper side surfaces of the first calibration block and the second calibration block, and the thickness of the first calibration block is the same as that of the second calibration block and is the standard height of installation of the aluminum total gear. According to the utility model, the deviation of the string striking machine after being assembled on the piano due to the inconsistent height of the bracket relative to the aluminum main gear can be avoided, the assembly quality and efficiency are improved, the product quality is more stable, the adjustment difficulty is small, and the operation is convenient.

1. The name of the product of this design: Rotating tweeter (YG11‑4D). 2. Purpose of the product of this design: speakers used for sound playback in cars. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention discloses a sound box sound source directivity adjusting method and a sound box, and relates to the technical field of audio equipment. The sound box comprises a box body, a first sound production part (a mid-high pitch sound post), a second sound production part (a woofer) and a rotating shaft assembly, the second sound production part is arranged on the side face of the box body, and the first sound production part is connected with the box body through the rotating shaft assembly. According to the adjusting method, biaxial rotation of the first sound production part is achieved through the rotating shaft assembly, wherein in the first axial rotation state, 0-270-degree pitch angle rotation is conducted around the horizontal axis, and in the second axial rotation state, 0-360-degree yaw angle rotation is conducted around the vertical axis. In an initial state, the two sounding parts point to the same direction; during adjustment, a pitch angle or a yaw angle can be independently selected to be adjusted to a target angle, and a damping rotating shaft of the rotating shaft assembly is matched with the shaft sleeve to provide damping force, so that the adjusted angle is kept stable, and finally, the sound source directions of the two sound production parts meet the use requirements. The method and the sound box can flexibly adapt to different listening scenes, ensure that the sound field pointing is accurate and stable, and improve the tone quality experience.

The utility model discloses a compact sound box, which is used for solving the technical problems that the overall height of the conventional three-frequency-division sound box is large and the compact design cannot be realized. The compact sound box comprises a box body, a first loudspeaker assembly and a bass loudspeaker which are arranged along the horizontal direction are arranged in the box body, and the first loudspeaker assembly comprises a high pitch loudspeaker and a middle pitch loudspeaker which are arranged along the height direction of the box body. Through the above design, the overall height of the sound box can be effectively reduced, and the compact design of the sound box can be realized, so that the sound box can be suitable for a scene with a small placement space.

The invention discloses a portable sound box for a vehicle, and the sound box comprises a quick-release fixed seat which is installed and fixed in a passenger compartment of the vehicle, and the quick-release fixed seat is provided with a power supply connecting seat and a quick-release linkage assembly; the sound box shell is mounted on the quick-release fixing seat and is fixed through a quick-release linkage assembly, and meanwhile, an electric connecting part at the bottom of the sound box shell is in butt joint conduction with the power supply connecting seat; the inner core control box is installed in the sound box shell, a bass loudspeaker is installed at the top of the inner core control box, at least one alto loudspeaker is installed at one end of the inner core control box, a high pitch loudspeaker is installed at the position between the upper sides of the alto loudspeakers, a control circuit board is installed on the lower portion of the inner side of the inner core control box, and a loudspeaker is installed on the control circuit board. A battery box is installed on the lower side of the control circuit board, and side voice diaphragms are installed on the front side and the rear side of the inner core control box. The vehicle-mounted sound box can solve the problems that an existing vehicle-mounted sound box is inconvenient to disassemble and assemble, installation and fixation in a vehicle are not firm, and the sound box effect is poor.

The utility model discloses a novel linear array sound box, which comprises a paint-sprayed wooden box, a loudspeaker system formed by combining a woofer and a treble horn is arranged in the paint-sprayed wooden box, a front full-iron mesh enclosure is arranged at the front end of the paint-sprayed wooden box, side full-iron mesh enclosures are arranged on two sides of the paint-sprayed wooden box, and the front full-iron mesh enclosure and the side full-iron mesh enclosures are arranged in the paint-sprayed wooden box. The front full-iron mesh enclosure and the side full-iron mesh enclosure are made of high-strength metal materials, front hanging supports are arranged on the two sides of the front end of the paint spraying wooden box, rear angle supports are arranged on the two sides of the rear end of the paint spraying wooden box, and the front hanging supports and the rear angle supports have the multi-angle adjusting function. According to the novel linear array sound box, the design of the front hanging bracket and the rear angle bracket is improved, the fixing and angle adjusting capabilities of the sound box are enhanced, and the front part and the side surfaces of the sound box are comprehensively protected by adopting the full-iron mesh enclosure, so that the protection performance and the heat dissipation efficiency are improved, and the stability and the durability of the sound box in various application scenes are ensured.

The utility model discloses a sound wave guiding device for improving high pitch quality, which relates to the electroacoustic technology field, and comprises a first waveguide plate, a loudspeaker and a sound playing cylinder, the outer surface of the first waveguide plate is provided with a sound receiving hole, the back of the first waveguide plate is connected with a second waveguide plate, and the upper part of the outer surface of the second waveguide plate is connected with a reflection block. And a reflecting strip is connected above the back of the second waveguide plate. Through the arrangement of the first waveguide plate, the second waveguide plate, the third waveguide plate, the sound receiving hole, the reflection block, the sound guide hole, the reflection strip and the sound playing hole, according to the characteristic that the wavelength of a high-frequency sound wave is short, after the loudspeaker unit makes a sound, the sound wave is reflected and compressed for multiple times through the inner wall of the first waveguide plate, the inner wall of the third waveguide plate, the reflection block and the reflection strip, and the sound is played. High-frequency sound waves in different frequency bands are clustered and then are radiated out through the sound playing hole in a concentrated manner, so that the purpose of improving the high-pitch quality is achieved; high-frequency sound waves are clustered through reflection and compression, so that the high-pitch quality is improved.

The utility model discloses a super-high-pitch loudspeaker high-pitch driving head, which comprises a high-pitch driving head body, a plurality of spaced grooves are arranged on the top surface of the upper edge of the high-pitch driving head body, the grooves penetrate through one end of the inner side of the edge, the edge of a vibrating diaphragm is fixed on the high-pitch driving head body through a compression ring, and a plurality of drying cavities corresponding to the grooves are arranged in the compression ring. A drying agent bag is arranged in the drying cavity, a vent hole is formed in the bottom of the drying cavity, the bottom end of the vent hole communicates with the groove, and a communicating hole penetrating through the vent hole is formed in the inner side of the pressing ring; when the vibrating diaphragm vibrates, air inside and outside the driving head can circulate, the pressure of an inner cavity of the driving head is balanced, and high-stability work is kept. The drying agent bag in the drying cavity can absorb water vapor in the loudspeaker through the groove, so that a dry environment is kept in the driving head, the problems of poor contact, corrosion and the like are not easily generated in the driving head, and the service life of the driving head is prolonged.

The utility model discloses a sounding unit, including basin stand, U iron, central magnetic structure, annular magnetic structure, treble vibration subassembly, bracing frame and bass vibration subassembly, U iron's enclosure bulkhead connects basin stand, central magnetic structure is provided on U iron, annular magnetic structure surrounds central magnetic structure and is provided on U iron, annular magnetic structure forms treble magnetic gap between annular magnetic structure and central magnetic structure, a bass magnetic gap is formed between the enclosure wall of the U iron and the annular magnetic structure; the high-pitch vibration assembly comprises a high-pitch vibrating diaphragm assembly which is connected with the annular magnetic structure. The supporting frame is arranged at the top of the annular magnetic structure, the supporting frame is provided with an extending edge extending inwards, and at least part of the area of the extending edge extends to the position above the high-pitch vibrating diaphragm assembly; the bass vibration assembly comprises a bass diaphragm assembly, the bass diaphragm assembly is integrally in a ring frame shape, the inner edge of the bass diaphragm assembly is connected with the extension edge, and the outer edge of the bass diaphragm assembly is connected with the basin stand. The sounding unit is novel and small in structure and good in bass compliance.