CN109275053B

CN109275053B - Handheld microphone sound box

Info

Publication number: CN109275053B
Application number: CN201811099194.XA
Authority: CN
Inventors: 张锋
Original assignee: Guangzhou Asicer Technology Industrial Co ltd
Current assignee: Guangzhou Asicer Technology Industrial Co ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2024-06-28
Anticipated expiration: 2038-09-20
Also published as: CN109275053A

Abstract

The invention discloses a handheld microphone sound box, which can overcome the problems of standing waves and acoustic short circuits in a symmetrical cavity, and comprises a front shell component and a rear shell component, wherein a main cavity is formed in the front shell component and the rear shell component, a loudspeaker and a vibrating diaphragm which are arranged oppositely are arranged in the main cavity, sound baffle plates with two openings at two ends are arranged between the loudspeakers which are arranged oppositely, the sound baffle plates are used for enabling loudspeaker air flows of left and right channels to generate resonance when the loudspeakers which are arranged oppositely do work to strengthen sound volume, overcoming standing waves and solving the problem of acoustic short circuits of the left and right channels relative to the loudspeakers, and the vibrating diaphragm which is arranged vertically is pushed by the air flows of the openings of the sound baffle plates to strengthen bass.

Description

Handheld microphone sound box

Technical Field

The utility model relates to the field of electronic equipment, in particular to a handheld microphone sound box.

Background

The traditional bluetooth sound box with the microphone as the call function is widely and mature in application, but sound received by the sound box from the microphone can not be directly played from the body sound box, and normally the microphone of the sound box is only used as a common sound box with the sound box connected with a mobile phone for wireless call and manually searching for music bluetooth wireless play. An external microphone is additionally added to realize karaoke; in particular, the handheld bluetooth speaker cannot be made large enough to keep the portable case, so the sound is small, and thus the karaoke effect is not achieved. When the sound box body and the microphone are integrated, the microphone receives sound and then transmits low frequency back to the microphone through the cavity after amplification, the microphone is circularly amplified to easily generate resonance, and high frequency is easily generated from self-excitation howling after space transmission and circulation are amplified, so that the sound box cannot be normally used.

Of course, simple vibration reduction treatment to change the frequency prevents resonant howling from the physical structure, or reduces howling by sacrificing volume to reduce volume, but the sound box cannot be made large enough to achieve good karaoke tone quality and volume experience effect. In addition, when two loudspeakers are used to generate left and right channel sounds, an audio standing wave (the audio standing wave refers to two audio waves with the same amplitude and opposite transmission directions, and a harmful wave in a distribution state along a transmission line form is a harmful wave which causes audio confusion and unclear crime of sound) and an acoustic short circuit (the sound waves are opposite when the vibrating diaphragm of the loudspeaker moves forwards or backwards, so that the sound waves cancel each other) are generated.

Therefore, how to achieve the karaoke sound effect by the handheld microphone sound box under the condition of convenient and small handheld is urgently needed to be solved.

Disclosure of utility model

Aiming at the technical problems, the embodiment of the utility model provides a handheld microphone sound box.

The handheld microphone sound box comprises a front shell component and a rear shell component, wherein a main cavity is formed in the front shell component and the rear shell component, a loudspeaker which is arranged oppositely is arranged in the main cavity, sound baffle plates with two openings are arranged between the loudspeakers which are arranged oppositely, the sound baffle plates are used for enabling loudspeaker airflow of left and right sound channels to generate resonance when the loudspeakers which are arranged oppositely do work to be used for enhancing sound volume, the sound baffle plates are plate-shaped, openings are arranged at the two ends of the sound baffle plates, one opening of one end of each sound baffle plate is slightly larger than the opening of the other end, a vibrating diaphragm is arranged at one side of one opening end of the sound baffle plates, the vibrating diaphragm is arranged at one side of the slightly larger opening end of the sound baffle plates, the surfaces of the sound baffle plates are perpendicular to the surfaces of the vibrating diaphragm, the middle parts of the sound baffle plates are hollow and are matched with the edge shapes of the vibrating diaphragm, and used for fixing a core supporting device and a core supporting device, and the core supporting device are used for protecting the vibrating diaphragm and the vibrating diaphragm of the microphone core and the microphone part; the miaow core is fixed in miaow core strutting arrangement is last, miaow core strutting arrangement holding is in the stereoplasm draw-in groove of main cavity top.

Optionally, the core support device is made of soft materials, and the core is arranged on the core support device.

Optionally, the microphone core supporting device comprises a main supporting body and two auxiliary supporting bodies, wherein the two auxiliary supporting bodies are concentric with the main supporting body respectively and are arranged in an upper layer and a lower layer; the two auxiliary supporting bodies are used for preventing the microphone core from shaking due to the inherent gravity center.

Optionally, the intelligent terminal further comprises a control unit, wherein the control unit is integrated with a Bluetooth circuit and a wake-up switch key, and triggering the wake-up switch key can enable the intelligent terminal connected with the Bluetooth circuit to enable a voice control state.

Optionally, the control unit is also integrated with a high-speed DSP integrated circuit for adjusting sound effects, realizing multiple sound effect functions, preventing howling, shifting frequency and eliminating self-excitation resonance amplitude reduction; the plurality of sound effect functions include: ECHO mode, reverberant mode, electric, doll, and sound-changing.

The handheld microphone sound box solves the problems of standing waves inherent in the through symmetrical cavity and the sound short circuit of the left and right sound channels relative to the loudspeaker by opening the two ends of the sound baffle.

Drawings

FIG. 1 is a schematic diagram of a handheld microphone speaker in an embodiment of the utility model;

FIG. 2 is an exploded view of a hand-held microphone enclosure in accordance with an embodiment of the present utility model;

FIG. 3 is another exploded view of a handheld microphone speaker in accordance with an embodiment of the present utility model;

fig. 4 is a schematic view of a microphone support device according to an embodiment of the utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

Referring to fig. 1 and 2, the handheld microphone speaker provided by the present utility model includes a front and rear shell assembly 1, a main cavity 11 is formed in the front and rear shell assembly 1, a speaker and an acoustic baffle 2 are disposed in the main cavity 11, the speakers 7 are disposed in the main cavity 11 in pairs and opposite to each other, and the acoustic baffle 2 is disposed between the two speakers 7 as shown in fig. 2. The sound baffle 2 separates the main cavity 11 into two sound chambers, one of which is the two horns 7. Above the main cavity 11 a microphone assembly 31 is provided. The microphone assembly 31 comprises a microphone 32 and a mesh cover assembly 33, and the mesh cover assembly 33 is covered on the microphone 32. The lower part of the front and rear shell component 1 is provided with a handle part, the handle part comprises a detachable battery, a bin door 13, a cover plate 14, a handle pipe body 15, a tail plug decorating part 13 and a key cover plate 6.

In an embodiment, two horns 7 are disposed in the main cavity 11, and of course, four horns or other horns with a double number may be also provided. Taking two loudspeakers as an example, a sound barrier plate 2 with two openings at two ends is arranged between the loudspeakers arranged oppositely, the sound barrier plate 2 is plate-shaped, and the openings at two ends 21/22 of the sound barrier plate can enable the loudspeaker airflow of the left and right channels to generate resonance for enhancing sound volume when the loudspeakers arranged oppositely do work.

Specifically, in the sealed main cavity 11, when the two horns 7 produce sound to do work, the horn airflow of the left and right channels can flow to the opposite other cavity (the two opposite cavities are formed by isolating the main cavity 11 by the sound barrier plate 2) through the openings 21/22 at the two ends of the middle sound barrier plate 2 to generate resonance, so that the sound volume is enhanced.

In addition, the two ends of the sound barrier plate 2 are provided with openings 21/22, wherein the opening 22 at one end is slightly larger than the opening 21 at the other end. A diaphragm 9 (passive radiator for enhancing the bass effect of the left and right channels of the opposite loudspeakers during work) is also arranged near the opening end of the sound baffle 2, and the diaphragm 9 is near the opening 22. The surface of the sound barrier plate 2 is perpendicular to the surface of the diaphragm 9, in this embodiment, the surface of the sound barrier plate 2 is the larger surface of the plate-shaped sound barrier plate 2 in fig. 2, and the surface of the diaphragm 9 is the circular surface, and the two surfaces are tangential and perpendicular; it is also understood that the sound barrier 2 is disposed on a plane perpendicular to the surface of the diaphragm 9 (the surface of the split diaphragm 9).

The opening 22 is designed to be larger, mainly to allow more low frequency air flow to pass through, thereby pushing the diaphragm 9 to enhance bass. The sound barrier plate 2 with the openings 21/22 at the two ends thoroughly solves the problem that standing waves and sound short circuits of the left and right sound channels relative to the loudspeaker exist in the design mode of some sound barrier plate-free design modes, which are easy to design, and the opening sound barrier plate 2 is matched with the vibrating diaphragm 9, so that the enhancement of high and medium tones is equivalent to the increase of the left and right sound channels by one time.

In addition, still be equipped with vibrating diaphragm clamping ring 8 on the vibrating diaphragm 9, vibrating diaphragm clamping ring 8's middle part is the cavity form, with the edge shape looks adaptation of vibrating diaphragm 9 is used for fixing vibrating diaphragm 9. In this embodiment, the diaphragm pressing ring 8 is annular, and is fixed to the front and rear case assembly 1 by a screw, and presses the diaphragm 9 against the front and rear case assembly 1.

As can be seen from the above embodiments, by setting two stereo speakers independently 7, and setting a sound barrier plate 2 with two openings at two ends between the two speakers, standing waves (the audio standing waves refer to two audio waves with the same amplitude and opposite transmission directions) inherent in the through symmetrical cavity are solved (the audio standing waves refer to harmful waves in a distribution state along the transmission line form, which cause audio confusion and unclear sound mishapes) and the problem of sound short circuit (the sound of the left and right channels is relatively counteracted) of the left and right channels relative to the speakers, the sound box cavities of the left and right channels are ventilated through the openings of the sound barrier plate 2 and multiplexed with the cavities of the two speakers 7 (separated by the sound barrier plate 2 relative to the main cavity 11), the side openings of the sound barrier plate 2 break the standing waves, the sound quality is improved, the sound quality is made bright and rich in elasticity, the two cavities are intercommunicated through the sound barrier plate openings and the useful air flow to form resonance enlarged sound, and the speakers do common pushing 9 enhance the bass.

Referring to fig. 3 and 4, the present application provides a handheld microphone speaker, which includes a microphone 32 and a microphone support device 3, wherein the microphone support device 3 fixes the microphone 32 and damps the microphone 32. The handheld microphone sound box further comprises a front shell component 1 and a rear shell component 1, the microphone core 32 and the microphone core supporting device 3 are arranged in the front shell component 1 and the rear shell component 1, a hard clamping groove 10 is formed in the front shell component 1 and the rear shell component 1, and the microphone core supporting device 3 is fixed in the hard clamping groove 10.

Specifically, the microphone core supporting device 3 includes a main supporting body 31 made of soft material and an auxiliary supporting body 32, the auxiliary supporting body 32 is annularly sleeved outside the main supporting body 31, and the auxiliary supporting body 32 is fixedly connected with the main supporting body 31 through a connecting rib 33. Wherein, the connecting ribs 33 are sheet-like connecting ribs 33 formed by extending from the inner side of the auxiliary support body 32 to the outer side of the main support body 31.

In an embodiment, the connecting rib 33 is a hollow connecting rib, and as shown in fig. 2, the connecting rib 33 has a hollow hole 34. Of course, in other embodiments, the connecting rib 33 may be a plurality of ribs having other shapes with certain cross-sectional sizes.

While the portion of the main support 31 slightly protruding from the sub support 32 is used to support the core 32, in one embodiment, the core 32 is stacked on the portion and fixed with a fixing member, and the sub support 32 is used to support the main support 31.

Further, a fixing rib is disposed in the hard clamping groove 10, and the fixing rib is used for fixing the auxiliary supporting body 32. The fixing rib is formed with a protruding rib 12 adapted to the external shape of the auxiliary supporting body 32, and the protruding rib 12 is formed inside the hard clamping groove 10. Thus, when the hand-held microphone sound box falls or vibrates, a part of acting force is firstly exerted on the auxiliary supporting body 32, and then the acting force passes through the connecting rib 33, and the connecting rib 33 stretches and can release the acting force and sound waves caused by vibration. While the main support 31 dampens the forces in the vertical direction for the microphone 32.

As can be seen from the above embodiments, the core supporting device 3 provided by the present application can stably support the precise parts of the core 32 to maximally strong vibration resistance, and the device is stacked with the core 32 and fastened by a screw lock, so that the device is not limited by the outer diameter of the core 32, and is suitable for fixing and protecting cores 32 (moving coil cores, moving iron cores, large vibration mold cores, etc.), etc., of various sizes, as follows:

The main support 31 is cylindrical, the sub support 32 is annular, and the cross section of the main support 31 is concentric with the cross section of the sub support 32.

The main support 31 is provided with a screw hole 35 penetrating through the support, and the screw hole 35 is used for accommodating a screw for connecting the main support 31 and the microphone core 32.

In one embodiment, one sub-support 32 may be provided, and in other embodiments, a plurality of sub-supports may be provided. For example, in the embodiment shown in fig. 1, the secondary support 32 is provided with two: the auxiliary supporting body 32 comprises a main outer wheel type ring and an auxiliary outer wheel type ring, wherein the thickness of the main outer wheel type ring is larger than that of the auxiliary outer wheel type ring, and the main outer wheel type ring and the auxiliary outer wheel type ring are arranged in an upper layer and a lower layer.

In this embodiment, two concentric circles (i.e., a main outer wheel ring and a sub outer wheel ring, similar to the shape of two wheels) are designed at the upper and lower ends of the main support 31 near the middle position, the connection rib 33 between the main support 31 and the two sub support 32 is in a thin film shape (the thickness is between 0.3mm and 1.0 mm), the thin film structure is designed in a hollowed-out shape to further improve the connection elasticity and enhance the vibration and drop resistance effect, and the size of the connection rib 33 can be adjusted according to the type of the carried microphone core 32.

The microphone core 32 is fixed at the central position of the upper end of the main support body 31 in a stacked mode, when vibration force is conducted to the auxiliary support body 32 during vibration of the hand-held handle, the connecting ribs 33 of the thin sheet stretch to change sound waves and force brought by vibration, and in addition, the two auxiliary support bodies 32 play a role in leverage, so that the microphone core 32 at the top is always fixed at the central circular position of the main support body 31. The swing range is controlled within the interval range between the center circle and the outer ring connecting rib 33. The two-wheel auxiliary support 32 is 720 degrees concentric circles, so that the microphone 32 can be ensured to be stably positioned in the middle of the concentric circles in all directions, and the optimal anti-seismic effect can be achieved at any placement angle.

In addition, a through hole 36 for accommodating the lead wire of the microphone 32 is formed inward along the side wall of the support body. After the main support 31 and the microphone 32 are fixed by screws, the leads of the microphone 32 extend downwards through the through-holes 36 to be connected with the control unit of the hand-held microphone speaker.

In summary, when the microphone core supporting device 3 is used, the main supporting body 31 and the auxiliary supporting bodies 32 are fixed in the hard clamping groove 10, the two auxiliary supporting bodies 32 form two 360-degree omnibearing supports on the main supporting body 31 by the thin-sheet hollow connecting ribs 33, the main supporting body 31 is always centered, and the microphone core 32 is ensured to be centered and prevented from shaking greatly. When the microphone sound box provided with the device is vibrated or falls down by external force, vibration waves are conducted to the main support body 31 and the auxiliary support body 32 through the hard clamping groove 10, and the softness of the thin hollow connecting ribs 33 can be changed in a stretching mode according to the size of the vibration waves, so that harmful vibration and falling impact are counteracted, and the microphone core 32 is effectively protected.

With continued reference to fig. 1 and 2, the handheld microphone speaker further includes a control unit 4, where the control unit 4 is integrated with a bluetooth circuit, a wake-up switch key, and a high-speed DSP integrated circuit. After receiving the audio, the microphone component 31 carries out audio processing through the circuit DSP component to increase the karaoke sound effect (the integrated circuit is AP8224\AP8248\8264DSP or reverberation IC 2399), modifies the sound, and then carries out mixed output with accompaniment (accompaniment is two modes of Bluetooth wireless input and wire connection wired input) to the power amplifier to carry out power amplification and directly plays the power amplifier through the loudspeaker 7, thereby realizing the karaoke effect.

In one embodiment, sound is conducted to a microphone (microphone) to generate resonance after being circularly amplified, high-pitched sound is easy to generate self-excitation problem after being circularly amplified through space radiation, and when detection operation is designed and applied to the inside of an AP8224C, AP8248 or AP8264 series high-speed DSP integrated circuit to confirm that self-excitation and resonance tendency occur, a frequency shift circuit in the integrated circuit executes to process simulated howling, and a amplitude reduction circuit in the integrated circuit processes the resonance problem; the KTV effect is achieved under the condition that the product is loud enough and is not distorted. The detection operation control of the high-speed DSP integrated circuit eliminates the howling and resonance problems, simplifies the structure of the main cavity 11, and is also used for adjusting sound effects to realize various sound effect functions, such as: ECHO mode, reverberant mode, electric, doll, variable sound, and other sound effects.

Further, triggering the wake-up switch button may enable a voice control state of an intelligent terminal connected with the bluetooth circuit. Specifically, the bluetooth circuit of the handheld microphone audio amplifier is in wireless connection with the smart mobile phone, a wake-up switch button is designed on a control pin of the bluetooth circuit, when the button is pressed, an APP of the wake-up intelligent terminal (such as a mobile phone or a tablet and the like) is controlled to enter a voice recognition state by sending an instruction through the bluetooth module, at the moment, voice can be collected through the microphone 32 and the APP of the intelligent terminal is sent to identify and search songs, network contents and the like on a network through bluetooth, and the APP of the intelligent terminal is wirelessly transmitted back to the handheld microphone audio amplifier to be played, so that the functions of playing songs on an AI intelligent voice on-demand network or audio files on the network are realized, or other software installed on the intelligent terminal is opened, or a telephone call is dialed and the like are realized.

The intelligent terminal is skillfully connected with the intelligent terminal through Bluetooth to control APP to realize voice song requesting K song, the function of artificial intelligent voice karaoke is realized at the lowest cost, the novel AI intelligent entertainment experience of leading user experience is brought, the application range of products is expanded, karaoke can be realized by separating the intelligent terminal, the intelligent terminal can be used for teaching by teachers, the tour guide can be used for explaining sound amplifying, and the intelligent terminal can be used for live broadcasting, listening to music, voice requesting, recording audio and the like.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides a handheld microphone audio amplifier, its characterized in that includes front and back shell subassembly, front and back shell subassembly internal shaping has the main cavity body, install the loudspeaker of relative setting in the main cavity body, be equipped with the sound baffle of both ends open-ended between the loudspeaker of relative setting, the sound baffle is used for making the loudspeaker air current of the left and right sound channel produce resonance and be used for reinforcing sound volume when the loudspeaker of relative setting is acting, the sound baffle takes the form of platy, the opening that the both ends of sound baffle set up, the opening of one end is slightly greater than the opening of the other end, one side of the opening one end of sound baffle is equipped with the vibrating diaphragm, the vibrating diaphragm is used for reinforcing the bass effect of the left and right sound channel when the loudspeaker of relative setting is acting;

The vibrating diaphragm is positioned at one side of the slightly larger end of the opening of the sound barrier plate, and the surface of the sound barrier plate is perpendicular to the surface of the vibrating diaphragm;

The vibrating diaphragm is also provided with a vibrating diaphragm pressing ring, and the middle part of the vibrating diaphragm pressing ring is hollow and is matched with the edge shape of the vibrating diaphragm to fix the vibrating diaphragm;

the microphone comprises a microphone body, a microphone core supporting device and a microphone core, wherein the microphone core supporting device is positioned at the bottom of the microphone core and is used for buffering, damping and protecting precise parts in the microphone; the miaow core is fixed in miaow core strutting arrangement is last, miaow core strutting arrangement holding is in the stereoplasm draw-in groove of main cavity top.

2. The hand-held microphone enclosure of claim 1 wherein the core support is made of a soft material and the core is seated on the core support.

3. The hand-held microphone enclosure of claim 2 wherein the microphone support means comprises a main support and two secondary supports, the two secondary supports being concentric with the main support and being disposed one above the other; the two auxiliary supporting bodies are used for preventing the microphone core from shaking due to the inherent gravity center.

4. The hand-held microphone enclosure of claim 1 further comprising a control unit having a bluetooth circuit and a wake-up switch button integrated thereon, triggering the wake-up switch button enabling a smart terminal connected to the bluetooth circuit to enable a voice control state.

5. The hand-held microphone enclosure of claim 4 wherein the control unit further incorporates a high speed DSP integrated circuit for adjusting sound effects, implementing multiple sound effect functions, and frequency shifting to prevent howling and to eliminate self-excited resonance with amplitude reduction;

The plurality of sound effect functions include: ECHO mode, reverberant mode, electric and doll sounds.