CN115460492A - Handheld wireless microphone and sound all-in-one machine capable of preventing howling - Google Patents
Handheld wireless microphone and sound all-in-one machine capable of preventing howling Download PDFInfo
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- CN115460492A CN115460492A CN202211398209.9A CN202211398209A CN115460492A CN 115460492 A CN115460492 A CN 115460492A CN 202211398209 A CN202211398209 A CN 202211398209A CN 115460492 A CN115460492 A CN 115460492A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a handheld wireless microphone and sound all-in-one machine capable of preventing howling, which comprises a shell and a handle, wherein the shell comprises a microphone sound cavity and a loudspeaker sound cavity; the microphone acoustic cavity comprises a moving coil microphone and a microphone bracket, and the moving coil microphone is arranged on the microphone bracket; the loudspeaker sound cavity comprises a loudspeaker sound cavity main shell, and the side wall of the loudspeaker sound cavity main shell is provided with at least one vibrating diaphragm; an asymmetric loudspeaker set is arranged in the main shell of the loudspeaker sound cavity; the microphone bracket is arranged at the top of the main shell of the sound cavity of the loudspeaker, and the periphery of the microphone bracket is abutted with the inner wall of the shell; the bottom of the main shell of the loudspeaker sound cavity comprises a PCB; the handle is connected with the PCB. The invention provides the handheld wireless microphone and sound all-in-one machine which is strong in practicability, reasonable in structure, good in howling inhibition effect, convenient to use and capable of providing user experience.
Description
Technical Field
The invention relates to the technical field of handheld wireless microphone sound, in particular to a handheld wireless microphone sound all-in-one machine capable of preventing howling.
Background
In order to avoid howling, the conventional handheld wireless microphone sound in the market is mainly subjected to structural howling prevention treatment, the orientation of a loudspeaker and the orientation of sound reception of a microphone are generally kept to be greater than or equal to 90 degrees, or the maximum volume of the loudspeaker is limited, so that the howling can be avoided to a certain extent, but because sound is transmitted towards the rear part of the handheld wireless microphone sound, a user cannot easily hear accompanying and music sound; meanwhile, the possibility of howling generated by the handheld wireless microphone sound is increased by turning up the music sound, so that only one of the howling and the song listening experience is usually selected, and the defects of poor howling suppression effect, inconvenience in use and the like are caused.
Disclosure of Invention
The invention mainly aims to provide a handheld wireless microphone and sound all-in-one machine capable of preventing howling, which has the advantages of strong practicability, reasonable structure, good howling inhibiting effect, convenience in use and user experience feeling.
In order to achieve the purpose, the invention provides a handheld wireless microphone and sound all-in-one machine capable of preventing howling, which comprises a shell and a handle, wherein the shell comprises a microphone sound cavity and a loudspeaker sound cavity; the microphone acoustic cavity comprises a moving coil microphone and a microphone bracket, and the moving coil microphone is arranged on the microphone bracket; the loudspeaker sound cavity comprises a loudspeaker sound cavity main shell, and the side wall of the loudspeaker sound cavity main shell is provided with at least one vibrating diaphragm; an asymmetric loudspeaker set is arranged in the main shell of the loudspeaker sound cavity;
the microphone bracket is arranged at the top of the main shell of the sound cavity of the loudspeaker, and the periphery of the microphone bracket is abutted with the inner wall of the shell; the bottom of the main shell of the loudspeaker sound cavity comprises a PCB (printed circuit board); the handle is connected with the PCB.
The shell is a mesh enclosure shell.
The moving coil microphone comprises a microphone silica gel sleeve, and the moving coil microphone is arranged on the microphone bracket through the microphone silica gel sleeve.
The microphone is characterized in that three stand columns are arranged on the microphone support, the microphone silica gel sleeves are arranged on the three stand columns, and the distance between the bottoms of the microphone silica gel sleeves and the plane of the microphone support is 5.5mm.
Microphone silica gel cover is including having annular hollow fine hair that gives sound insulation, and this microphone silica gel cover sets up on three stands of microphone support through this annular hollow fine hair that gives sound insulation.
The moving coil microphone comprises an annular hollow mesh enclosure sponge, and the mesh enclosure sponge is sleeved at the top of the moving coil microphone.
The asymmetric speaker set comprises a first speaker and a second speaker, and the first speaker and the second speaker are arranged in a back-to-back asymmetric mode.
The loudspeaker sound chamber main casing body bottom is provided with the sound chamber lower cover, the PCB board is connected with this sound chamber lower cover.
The PCB comprises a key shell, the PCB is arranged on the key shell, and keys are arranged on the outer wall of the key shell; the handle is connected with the PCB through the button shell.
The handle is internally provided with a power supply device.
The microphone sound cavity forms a partition board which is isolated from air flowing up and down through the microphone bracket and the sound insulation velvet and the edge of the mesh enclosure, so that the sound of the speaker sound cavity below the microphone sound cavity is blocked from being transmitted into the microphone through the air inside the handheld wireless microphone sound to cause echo or squeal, and a sound cavity for receiving sound in one direction is formed; the shell isolation plate with the non-integrated design can effectively reduce sound transmission caused by shell resonance, and further reduce and reduce the possibility of squeaking caused by self-excitation signals generated by the microphone; 2) The loudspeaker sound cavity adopts an asymmetric loudspeaker set consisting of two loudspeakers and at least one vibrating diaphragm, the heights of the two loudspeakers are in asymmetric design, and the loudspeaker sound cavity aims to fully utilize the volume of the sound cavity, reduce resonance propagation generated by a sound cavity shell while enabling sound to be powerful, reduce the condition that sound is propagated to a microphone sound cavity through shell vibration, better transmit sound to a user and optimize the user's experience of listening to songs; 3) The invention has strong practicability, reasonable structure, good squeal inhibiting effect, convenient use and strong user experience, and is suitable for general popularization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a handheld anti-howling wireless microphone and sound all-in-one machine according to an embodiment of the present invention;
fig. 2 is a disassembled schematic view of a handheld anti-howling wireless microphone and sound all-in-one machine according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a hand-held whistling-prevention wireless microphone and sound all-in-one machine with a disassembled top of a housing according to an embodiment of the invention;
fig. 4 is a schematic diagram of a speaker sound cavity disassembly of a handheld anti-howling wireless microphone and sound all-in-one machine according to an embodiment of the present invention;
fig. 5 is a schematic view of a handle device of a handheld anti-howling wireless microphone and sound all-in-one machine according to an embodiment of the present invention, disassembled;
FIG. 6 is a top view of a handheld whistling-prevention wireless microphone and audio all-in-one machine in accordance with an embodiment of the present invention;
FIG. 7 isbase:Sub>A sectional view taken along the direction A-A ofbase:Sub>A top view ofbase:Sub>A handheld anti-howling wireless microphone and sound all-in-one machine according to an embodiment of the invention;
FIG. 8 is a sectional view taken along the direction B-B in the top view of the handheld anti-howling wireless microphone and sound all-in-one machine in accordance with the embodiment of the present invention;
fig. 9 is a simple logic diagram of howling point monitoring and suppression processing for the handheld howling-prevention wireless microphone and sound all-in-one machine according to the embodiment of the present invention;
fig. 10 is a schematic diagram of frequency shift processing of the handheld howling-prevention wireless microphone and sound all-in-one machine according to the embodiment of the present invention.
The reference numbers indicate:
100-a housing; 1-a top cover; 2-top cover sponge; 3-a first screw; 4-mesh enclosure shell; 5-mesh enclosure sponge; 6-moving coil microphone; 7-microphone silica gel cover; 8-sound insulation velvet; 9-a second screw; 10-a microphone stand; 101-a first upright; 102-a second upright; 103-a third column; 11-a diaphragm; 12-speaker acoustic chamber main housing; 131-a first speaker; 1311-third screw; 132-a second speaker; 1321-fourth screw; 14-acoustic chamber lower cover; 141-fifth screw; 15-a decorative piece; 151-sixth screw; 16-a PCB board; 17-a USB plug; 18-a key housing; 181-seventh screw; 19-a key; 20-a battery; 21-a battery compartment; 22-a handle; 23-a base;
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a handheld wireless microphone and sound all-in-one machine capable of preventing howling.
Referring to fig. 1 to 8, in an embodiment of the present invention, the handheld anti-howling wireless microphone-sound all-in-one machine includes a housing 100 and a handle 22, where the housing 100 includes a microphone sound cavity and a speaker sound cavity, and the microphone sound cavity is disposed above the speaker sound cavity; the microphone acoustic cavity comprises a moving coil microphone 6 and a microphone support 10, and the moving coil microphone 6 is arranged on the microphone support 10; the loudspeaker sound cavity comprises a loudspeaker sound cavity main shell 12, and the side wall of the loudspeaker sound cavity main shell 12 is at least provided with a vibrating diaphragm 11; an asymmetric loudspeaker set is arranged in the main shell 12 of the loudspeaker sound cavity;
the microphone bracket 10 is arranged on the top of the main shell 12 of the sound cavity of the loudspeaker, and the periphery of the microphone bracket 10 is abutted against the inner wall of the shell 100; the bottom of the main shell 12 of the loudspeaker sound cavity comprises a PCB 16; the handle 22 is connected to the PCB board 16.
In this embodiment, preferably, the housing 100 is a mesh enclosure housing 4.
In this embodiment, a top cover 1 is disposed on the top of the mesh enclosure housing 4, preferably, a top cover sponge 2 is disposed between the top cover 1 and the mesh enclosure housing 4, and the top cover 1 is disposed on the top of the mesh enclosure housing 4 through the top cover sponge 2. Further, preferably, the top cover 1 is connected with the mesh enclosure housing 4 through a first screw 3.
In this embodiment, it is preferable that the microphone holder 10 is shaped like a circular disc, the microphone holder 10 is disposed on the top of the main housing 12 of the speaker sound cavity, and the periphery of the microphone holder 10 abuts against the inside of the housing 100; that is to say, two sides of the cross section of the microphone bracket 10 are abutted against the inner wall of the mesh enclosure shell 4, and the microphone sound cavity forms a partition board which is isolated from the flowing of the air up and down through the microphone bracket 10 and the inner edge of the mesh enclosure shell 4, so that the sound of the speaker sound cavity below is blocked from being transmitted into the microphone through the air inside the handheld wireless microphone sound to cause echo or squeal, and a sound cavity for receiving sound in one direction is formed; and the shell isolation plate with the non-integrated design can effectively reduce sound transmission caused by shell resonance, and further reduce and reduce the possibility of squeaking caused by self-excitation signals generated by the microphone.
In this embodiment, the microphone bracket 10 and the edge inside the mesh enclosure housing 4 form a partition plate for isolating the air in the acoustic cavity of the speaker below, so that the intensity of the resonance sound transmission of the mesh enclosure housing 4 is reduced, and the air flow between the acoustic cavity of the microphone and the air flow inside the handheld wireless microphone speaker is isolated.
Most of the existing hand-held wireless microphone sound devices directly use the upper shell of the sound cavity of the loudspeaker as the lower shell of the sound cavity of the microphone, which is not beneficial to reducing the vibration transmission between the shells.
In this embodiment, the isolation between the microphone bracket 10 and the edge inside the mesh enclosure housing 4 may further include a flannelette isolation or a silica gel isolation or a sponge isolation between the microphone bracket 10 and the edge inside the mesh enclosure housing 4.
Referring to fig. 2, fig. 3, fig. 4, fig. 6, fig. 7, fig. 8, in this embodiment, preferably, the moving coil microphone 6 includes a microphone silicone sleeve 7, and the moving coil microphone 6 is disposed on the microphone holder 10 through the microphone silicone sleeve 7.
In this embodiment, further, preferably, three upright columns are disposed on the microphone bracket 10, and the three upright columns include a first upright column 101, a second upright column 102, and a third upright column 103; the microphone silica gel cover 7 is arranged on the three upright posts, and the distance between the bottom of the microphone silica gel cover 7 and the plane of the microphone support 10 is 5.5mm.
In this embodiment, further, preferably, the microphone silica gel case 7 includes an annular hollow sound insulation wool 8, and preferably, the sound insulation wool 8 is made of flannelette; the microphone silica gel cover 7 is arranged on three columns of the microphone bracket 10 through the annular hollow sound insulation velvet 8. Still further, preferably, the sound insulation velvet 8 is connected with the microphone holder 10 by a second screw 9.
In this embodiment, preferably, the moving-coil microphone includes an annular hollow mesh enclosure sponge 5, and the mesh enclosure sponge 5 is sleeved on the top of the moving-coil microphone 6.
In the embodiment, the bottom of the moving coil microphone 6 is completely nested on the microphone silica gel sleeve 7, the microphone silica gel sleeve 7 is fixed at the center of the cross section of the microphone bracket, the plane distance between the microphone silica gel sleeve 7 and the lower microphone bracket 10 is 5.5mm, the microphone is ensured to be in a suspended state, the microphone has the advantages that the position of the microphone can be ensured to be unchanged all the time, and when the microphone collides with the outside, the interference on the moving coil microphone 6 is reduced to the maximum extent.
The sound cavity of the microphone forms a partition board which is isolated from the flowing of air up and down through the microphone bracket 10 and the sound insulation velvet 8 and the inner edge of the mesh enclosure shell 4, so that the sound of the sound cavity of the loudspeaker below is blocked from being transmitted into the microphone through the air to cause echo or squeal, and a sound cavity for receiving sound in one direction is formed; and the shell isolation plate with the non-integrated design can effectively reduce sound transmission caused by shell resonance, and further reduce and reduce the possibility of squeaking caused by self-excitation signals generated by the microphone.
In this embodiment, the mesh enclosure housing 4 and the top cover 1 are provided with sound receiving holes for collecting external sound, and the sound receiving direction of the moving coil microphone 6 is the same as the hole opening direction of the top cover 1, and both directions are vertical upward.
Most of the existing microphones of the handheld wireless microphone sound are fixed with an upper shell of a loudspeaker sound cavity by adopting a damping sponge and a silica gel sleeve, or the microphone silica gel sleeve is fixed by adopting two upright posts, so that the microphones are easy to shake in the cavity, and are easy to generate noise and squeal when being impacted.
In this embodiment, it is preferable that the asymmetric speaker set includes a first speaker 131 and a second speaker 132, and the first speaker 131 and the second speaker 132 are arranged in a back-to-back highly asymmetric manner.
In this embodiment, further, preferably, the first speaker 131 is connected to the speaker sound chamber main housing 12 through a third screw 1311; the second speaker 132 is connected to the speaker chamber main housing 12 by fourth screws 1321.
The back-facing asymmetric arrangement of the first speaker 131 and the second speaker 132 is that the heights of the first speaker 131 and the second speaker 132 are not equal, and the first speaker 131 and the second speaker 132 are arranged back-facing; the heights of the first loudspeaker 131 and the second loudspeaker 132 are designed asymmetrically, and the height difference of the two loudspeakers is 8.4mm, so that the volume of the sound cavity is fully utilized, the sound is forcefully and simultaneously resonance transmission generated by the sound cavity shell is reduced, and the condition that the sound is transmitted to the sound cavity of the microphone through the shell vibration is reduced; the included angle between the orientation of the loudspeaker and the sound receiving direction of the microphone is smaller than 90 degrees, sound can be better transmitted to a user, and the song listening experience of the user is optimized.
In this embodiment, it is further preferable that the asymmetric arrangement of the first speaker 131 and the second speaker 132 includes a horizontal and vertical asymmetric arrangement, and also includes an irregular layout arrangement.
In this embodiment, it is further preferable that, according to actual conditions, two side walls of the main housing 12 of the speaker sound cavity are respectively provided with a diaphragm 11.
In this embodiment, the bottom of the main housing 12 of the speaker sound chamber is preferably provided with a lower cover 14 of the sound chamber, and the PCB 16 is connected with the lower cover 14 of the sound chamber. Further, preferably, the acoustic chamber lower cover 14 is connected to the bottom of the speaker acoustic chamber main housing 12 through a fifth screw 141.
In this embodiment, it is further preferable that a decoration member 15 is disposed between the acoustic cavity lower cover 14 and the PCB 16, and the PCB 16 is connected to the decoration member 15. Further, it is preferable that the decoration member 15 is connected to the PCB 16 by a sixth screw 151.
In this embodiment, preferably, the PCB 16 includes a key casing 18, the PCB 16 is disposed on the key casing 18, and the outer wall of the key casing 18 is provided with a key 19; the handle 22 is connected to the PCB board 16 through the key housing 18.
In this embodiment, further, preferably, the key casing 18 includes a USB plug 17, and the USB plug 17 is fixed in a limited manner; the USB plug 17 plays a role in dust and water prevention.
In this embodiment, the acoustic cavity lower cover 14 is connected through the point-fixed lower key decoration 15, so that resonance of the housing of the microphone is further reduced, sound is prevented from being transmitted to the microphone through vibration of the housing, and the distance between the acoustic cavity lower cover 14 and the lower key decoration 15 is 8.4mm, so that heat can be dissipated by a PCB 16 below the key decoration, and the overall performance of the microphone is stable.
The direct fixed design of the module of the invention: the microphone sound cavity module, the loudspeaker sound cavity module and other modules are fixed in a point fixing mode, so that the amplitude of vibration transmitted by the inner shell is reduced when music and singing are played, and the generation of howling is reduced.
Most of the existing handheld wireless microphone sound devices are integrally designed, and the internal sound cavity module is integrally connected with other modules, so that the vibration transmission between the shells is not favorably reduced.
The orientation of the loudspeaker and the orientation of the sound reception of the microphone are less than 90 degrees, the design can ensure that the loudspeaker can generate sound towards the ear direction of a user, the user can conveniently and clearly hear music sound when using the microphone, and the hearing sense is downward or the microphone is better when the microphone is used for playing music alone.
Most of existing handheld wireless microphone sound equipment are larger than 90 degrees or are 180 degrees to put towards and microphone radio reception direction, and a user can easily hear unclear accompaniment when using the equipment.
The loudspeaker adopts the loudspeaker design with the asymmetric design, reduces the possibility of squealing caused by resonance of the sound cavity shell, can output higher power, enables the loudspeaker to release higher sound, and enables squealing prevention, high-volume playing and microphone calling to be compatible.
Most of existing hand-held wireless microphone sound devices adopt a loudspeaker symmetrical design, and the sound cavity vibration is used for obtaining better sound quality, but the invention is not a pure sound box, and the invention should mainly sing in consideration of the characteristics of the invention.
In this embodiment, it is preferable that a power supply device is disposed in the handle 22.
In this embodiment, further, preferably, a base 23 is disposed below the handle 22; the base 23 is more convenient and more stable to use.
In this embodiment, the handle 22 is a hollow cylinder, and the battery 20 may be disposed in the handle 22; further, preferably, a battery compartment 21 may be disposed in the handle 22, and the battery 20 is disposed in the battery compartment 21.
In this embodiment, the handle 22 and the battery compartment 21 are connected to the key casing 18 through a seventh screw 181;
in this embodiment, the PCB 16 may be provided with an LED lamp, or the handle 22 may be provided with an LED lamp, so that the handle 22 becomes a light-transmitting handle.
The invention adopts the proposal of the indicator light that the light is sent into the transparent handle 22, so that the invention is more beautiful and uniform as a whole, and the user can make the state of the invention more definite, without rotating the indicator light to determine the state of the invention.
In this embodiment, it is further preferable that the handle 22 is divided into a transparent layer and a decorative layer, and a transparent layer is left in the middle of the key casing 18, so that the light of the PCB board-mounted LED can be uniformly distributed on the transparent handle 22 and the base 23 of the present invention.
Referring to fig. 9 and 10, the howling prevention of the present invention may further include: the PCB 16 is provided with a squeaking prevention circuit which comprises a main control circuit chip; the anti-howling circuit performs frequency shift processing and howling point suppression processing on the audio signal.
In fig. 10, the audio signal of the input microphone is expressed; a line-line, which represents an audio signal output by a microphone; -, representing the audio signal output by the speaker;
the processing method comprises the following steps:
(1) The howling point monitoring and inhibiting process specifically comprises the following steps: the main control circuit chip monitors the input audio signals in real time, and once the excessive response times of a certain audio within a short time are found (namely, sound enters the microphone twice or repeatedly in a radiation mode or a sound reflection mode to cause the sound to generate howling by self excitation, orThe method is characterized in that when an internal sound-electricity signal is gained, the sound with the same frequency is amplified and output for multiple times in a self-excited way to cause howling, and the frequency point of the audio with the characteristic is referred to as a howling point below，The voltage of the audio signal is continuously pulled down in time, the possibility of generating howling is inhibited, or the generated howling is quickly eliminated.
(2) The frequency shift processing specifically comprises: the method comprises the steps of moving the sound frequency of an input microphone to the left or the right by 1-3 Hz, transmitting an audio signal with the moved frequency into an audio processing module, moving the received audio signal to the left or the right by 1-3 Hz by the audio processing module, and outputting the audio signal to a power amplifier, wherein the audio output by a loudspeaker has a frequency difference of 2-6 Hz compared with the audio signal input into the microphone, so that the generation of a howling point is avoided, and the effect of avoiding the howling is achieved.
The invention can be used by matching two machines, under the condition of double-machine matching, the music played by the two devices can output the sound of the left and right sound channels from the two devices respectively, under the condition of double-machine matching, the volume of the loudspeaker of the two devices is controlled by the host machine in the double machine, the volume of the microphone is controlled by the two devices independently, and the sound effect is controlled by the two devices independently.
The invention has a monitoring interface and a live broadcast interface, wherein the monitoring interface comprises: the audio signal of the invention can be output to the external equipment through the monitoring interface by inserting the audio line into the monitoring interface, and the external equipment can not input the audio signal through the monitoring interface and transmit the audio signal to the invention. And (3) live broadcasting interface: the external equipment can realize audio signal interaction with the invention by inserting the external equipment into the live interface through the audio cable, and the external equipment can input the audio signal into the invention through the live interface.
The invention utilizes the squealing prevention circuit to avoid squealing of the hand-held wireless microphone and sound integrated machine during use through the improvement of the mechanical structure. The mechanical structure of the invention is improved by isolating the sound cavity of the microphone from the air flow in the all-in-one machine and adopting anti-resonance design at multiple places, so that the sound is transmitted to the microphone through the vibration of the shell, and the possibility of squeaking is further reduced while the user's experience of listening to the song is ensured;
the anti-howling circuit comprises audio frequency shift processing, signal suppression, amplification processing and the like, performs audio frequency shift processing on input and output sounds to avoid howling points, collects feedback signals at the same time, and continuously reduces the output voltage of the possible or generated howling points to achieve the effect of suppressing the howling in the anti-howling process. The invention has the effect of improving the user experience.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the present invention, and all changes and modifications that come within the spirit of the invention and any equivalents thereof or any direct/indirect use thereof within the scope of the following claims are intended to be embraced therein.
Claims (10)
1. The utility model provides a wireless microphone stereo set all-in-one of handheld anti-howling, includes casing and handle, its characterized in that: the shell comprises a microphone sound cavity and a loudspeaker sound cavity; the microphone acoustic cavity comprises a moving coil microphone and a microphone bracket, and the moving coil microphone is arranged on the microphone bracket; the loudspeaker sound cavity comprises a loudspeaker sound cavity main shell, and the side wall of the loudspeaker sound cavity main shell is at least provided with a vibrating diaphragm; an asymmetric loudspeaker set is arranged in the main shell of the loudspeaker sound cavity;
the microphone bracket is arranged at the top of the main shell of the sound cavity of the loudspeaker, and the periphery of the microphone bracket is abutted with the inner wall of the shell; the bottom of the main shell of the loudspeaker sound cavity comprises a PCB (printed circuit board); the handle is connected with the PCB.
2. A handheld whistling-prevention wireless microphone and sound all-in-one machine as claimed in claim 1, wherein: the shell is a mesh enclosure shell.
3. A handheld howling prevention wireless microphone and sound all-in-one machine as claimed in claim 2, characterized in that: the moving coil microphone comprises a microphone silica gel sleeve, and the moving coil microphone is arranged on the microphone bracket through the microphone silica gel sleeve.
4. A handheld howling prevention wireless microphone and sound all-in-one machine as claimed in claim 3, characterized in that: the microphone is characterized in that three stand columns are arranged on the microphone support, the microphone silica gel sleeves are arranged on the three stand columns, and the distance between the bottoms of the microphone silica gel sleeves and the plane of the microphone support is 5.5mm.
5. A handheld anti-howling wireless microphone and sound all-in-one machine as claimed in claim 4, wherein: microphone silica gel cover is including having annular hollow fine hair that gives sound insulation, and this microphone silica gel cover sets up on three stands of microphone support through this annular hollow fine hair that gives sound insulation.
6. A handheld anti-howling wireless microphone and sound all-in-one machine as claimed in claim 5, wherein: the moving coil microphone comprises an annular hollow mesh enclosure sponge, and the mesh enclosure sponge is sleeved at the top of the moving coil microphone.
7. A handheld howling prevention wireless microphone and sound all-in-one machine as claimed in claim 6, characterized in that: the asymmetric speaker set comprises a first speaker and a second speaker, and the first speaker and the second speaker are arranged in a back-to-back asymmetric mode.
8. A handheld howling prevention wireless microphone and sound all-in-one machine as claimed in claim 7, wherein: the loudspeaker sound chamber main casing body bottom is provided with the sound chamber lower cover, the PCB board is connected with this sound chamber lower cover.
9. The handheld howling-preventing wireless microphone-sound all-in-one machine as claimed in claim 8, wherein: the PCB comprises a key shell, the PCB is arranged on the key shell, and keys are arranged on the outer wall of the key shell; the handle is connected with the PCB board through the key shell.
10. The handheld howling-preventing wireless microphone-sound all-in-one machine as claimed in claim 8, wherein: the handle is internally provided with a power supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211398209.9A CN115460492A (en) | 2022-11-09 | 2022-11-09 | Handheld wireless microphone and sound all-in-one machine capable of preventing howling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211398209.9A CN115460492A (en) | 2022-11-09 | 2022-11-09 | Handheld wireless microphone and sound all-in-one machine capable of preventing howling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115460492A true CN115460492A (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211398209.9A Pending CN115460492A (en) | 2022-11-09 | 2022-11-09 | Handheld wireless microphone and sound all-in-one machine capable of preventing howling |
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| Country | Link |
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| CN (1) | CN115460492A (en) |
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Application publication date: 20221209 |
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