CN114501200B - Multi-loudspeaker mutual interference prevention sound box - Google Patents
Multi-loudspeaker mutual interference prevention sound box Download PDFInfo
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- CN114501200B CN114501200B CN202210112420.3A CN202210112420A CN114501200B CN 114501200 B CN114501200 B CN 114501200B CN 202210112420 A CN202210112420 A CN 202210112420A CN 114501200 B CN114501200 B CN 114501200B
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 112
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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
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
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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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
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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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
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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
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
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Abstract
The invention discloses a multi-horn mutual interference prevention sound box, relates to the technical field of sound boxes, and particularly relates to a multi-horn mutual interference prevention sound box which comprises a sound box main body, wherein connecting sheets are fixedly arranged on the outer portions of four corners above and below the sound box main body, a connecting block is fixedly arranged between the upper connecting sheet and the lower connecting sheet, a limiting plate is movably arranged on the outer side of the connecting block, and a first supporting column is fixedly arranged between the upper connecting sheet and the lower connecting sheet. This mutual interference stereo set is prevented to many loudspeaker, through the setting of interior sound absorption piece and outer sound absorption piece, the rectangular channel with external intercommunication is seted up to the interior sound absorption piece that makes sound absorption sponge and support hardboard space top, the inner chamber fixed mounting backup pad of sound absorption piece makes, the side is connected the fly leaf through damping spring about the backup pad, the sound production scope of different face loudspeaker is restricted through the cooperation of interior sound absorption piece and outer sound absorption piece to the convenience when using, avoid influencing each other between the loudspeaker, influence the experience of audience.
Description
Technical Field
The invention relates to the technical field of sound equipment, in particular to a multi-loudspeaker mutual interference prevention sound equipment.
Background
The sound box refers in particular to a set of audio system for making sound by combining electrical equipment, the development history of sound technology can be divided into four stages of an electronic tube, a transistor, an integrated circuit and a field effect tube, the important same equipment of the sound system is a sound box, the sound box generally comprises a loudspeaker unit and a box body, the loudspeaker unit is used as a sound-making part, the box body is used as the supplement of the loudspeaker unit to play a role in correcting the sound, the sound-making principle of the loudspeaker unit is a conversion of converting electric energy into sound, when different electronic energy is transmitted to a coil, the coil generates energy to interact with a magnetic field of a magnet, the interaction causes the vibration of a paper disc, because the electronic energy is changed at any time, the coil of the loudspeaker can move forwards or backwards, so the paper disc of the loudspeaker can move along with the motion, and the action causes the density degree of air to change to generate sound.
Along with the development of stereo set, current stereo set is the scope of reinforcing sound production, guarantees simultaneously that stereo set tone quality all around is the same, can be provided with more loudspeaker usually, nevertheless in the use of stereo set, loudspeaker simultaneous occurrence, sound in the in-process of propagating, can take place mutual interactive condition to lead to the experience of audience not good, influence the result of use of stereo set, experience for improving spectator's seeing and hearing, for this reason, we provide a mutual interference stereo set is prevented to many loudspeakers.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a multi-loudspeaker mutual interference prevention sound box, and solves the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a mutual interference stereo set is prevented to many loudspeaker, includes audio body, the outside fixed mounting in audio body upper and lower four corners has the connection piece, two from top to bottom fixed mounting has the connecting block between the connection piece, the outside movable mounting of connecting block has the limiting plate, two from top to bottom fixed mounting has first support column between the connection piece, the outside movable sleeve of first support column is equipped with first rotation cover, first outside fixedly connected with internal sound absorption piece that rotates the cover, the inside fixed mounting in the internal sound absorption piece outside has the second support column, the outside movable sleeve of second support column is equipped with the second and rotates the cover, the second rotates the outside fixedly connected with external sound absorption piece of cover.
Optionally, the upper portion of the outer side of the inner sound absorption block is fixedly connected with a limiting column, the outer side of the limiting column close to the bottom is fixedly provided with teeth, the outer movable sleeve at the bottom end of the limiting column is provided with a fixed tooth sleeve, the upper portion of the fixed tooth sleeve is fixedly connected with a movable sleeve, the upper portion of the outer sound absorption block is fixedly provided with a reset spring, the upper portion of the outer sound absorption block is fixedly provided with a first damping sleeve, and the top end of the reset spring is fixedly provided with a pull plate.
Optionally, the left wall and the right wall of the inner sound absorption block inner cavity are fixedly provided with sound absorption sponges, the inner side of each sound absorption sponge is fixedly provided with a supporting hard plate, the inner cavity of each inner sound absorption block is fixedly provided with a sound absorption plate, and the inner side of each sound absorption plate is provided with a sound absorption hole.
Optionally, the inner cavity of the outer sound absorption block is fixedly connected with a support plate, the left side and the right side of the support plate are fixedly connected with damping springs which are uniformly distributed, the outer side of the support plate is fixedly connected with second damping sleeves which are uniformly distributed, and the outer part of each damping spring is fixedly connected with a movable plate
Optionally, the bottom of the rear side of the reset spring is fixedly connected with the top surface of the movable sleeve, the reset spring is located in the inner cavity of the first damping sleeve, and a cylindrical groove matched with the limit column is formed in the rear side of the reset spring
Optionally, the inner side of the fixed tooth sleeve is provided with a tooth socket matched with teeth, and the height value of the fixed tooth sleeve is the same as that of the teeth.
Optionally, a rectangular groove is formed in the top end of the inner sound absorption block, the rectangular groove is located above a gap between the support hard plate and the sound absorption plate, and the two sound absorption plates are located between the two support hard plates.
Optionally, the damping spring is located inside the second damping sleeve, the movable sleeve is movably sleeved in an inner cavity of the outer sound absorption block, and the outer surface of the movable plate is located on the inner sides of the left wall and the right wall of the inner cavity of the outer sound absorption block.
Optionally, be equipped with testing arrangement on the stereo set main part, include:
the playing unit is used for controlling the loudspeaker to play the specified detection audio;
the acquisition unit is used for acquiring a first audio frequency emitted by the loudspeaker;
the processing unit is used for establishing a time domain axis according to the specified detection audio and by combining a preset sinusoidal signal, inputting the first audio to the time domain axis and acquiring a test audio;
dividing the test audio into a plurality of sub-tone frequency bands based on the period of the sinusoidal signal, and respectively drawing an envelope line corresponding to each sub-tone frequency band in a preset coordinate system;
simultaneously acquiring the audio energy corresponding to each sub-audio frequency band, and establishing a frequency band-energy list;
dividing the specified detection audio into sub detection sections with corresponding lengths based on the frequency band-energy list, respectively acquiring standard energy corresponding to each sub detection section, and establishing a frequency band-standard energy list;
comparing the frequency band-energy list with the frequency band-standard energy, marking a sub-tone frequency band corresponding to the inconsistency of the standard energy on the test audio, eliminating a first envelope line of the unmarked sub-tone frequency band in the preset coordinate system, and obtaining the amplitude of the residual envelope line;
respectively adjusting the amplitudes of the residual envelope lines to a preset standard, and acquiring a second amplitude of the adjusted corresponding marked sub-tone frequency band;
and obtaining the adjusted adjusting amplitude corresponding to each sub-tone frequency range of the checked audio frequency, establishing an amplitude adjusting scheme, and adjusting the sound signal corresponding to the first audio frequency to a second audio frequency when the user uses the main sound body.
Optionally, be equipped with the noise reduction device on the stereo set main part, include:
the collecting unit is used for collecting real-time audio emitted by a loudspeaker when a user uses the main sound body;
the noise reduction unit is used for acquiring pulses of real-time audio, selecting a first window function from a preset window function list based on the pulses and establishing a windowing domain;
inputting the real-time audio into the windowing domain to obtain a first windowing audio, inputting the first windowing audio into a preset playing domain for playing, and obtaining a voice characteristic value in the playing process of the first windowing audio;
acquiring the noise intensity of the real-time audio in a preset characteristic value-intensity list based on the voice characteristic value, and generating a first noise reduction parameter;
the noise reduction unit is also used for dividing the real-time audio signal into a plurality of sub-period sections based on the period of the real-time audio, and respectively carrying out frequency delay on each sub-period section to obtain a corresponding section to be detected;
sequencing the sections to be detected in sequence based on the position sequence of the sub-period sections on the real-time audio signal, and marking a first noise section overlapped with a front adjacent position on each section to be detected;
establishing a real-time noise signal according to the first noise section, acquiring a complementary signal of the real-time noise signal, and generating a second noise reduction parameter;
and establishing a noise reduction shaft based on the first noise reduction parameter and the second noise reduction parameter, and outputting the noise reduction audio to play through the noise reduction shaft by the real-time audio.
The invention provides a multi-horn mutual interference prevention sound box which has the following beneficial effects:
1. this mutual interference stereo set is prevented to many loudspeaker, through the setting of interior sound absorption piece and outer sound absorption piece, make the inboard left and right wall fixed mounting of interior sound absorption piece inhale the sound sponge, the interior survey fixedly connected with that inhales the sound sponge supports the hardboard, make two support simultaneously and be provided with the abatvoix between the hardboard, the rectangular channel with external intercommunication is seted up to the interior sound absorption piece that makes sound absorption sponge and support hardboard space top, make the inner chamber fixed mounting backup pad of outer sound absorption piece, the side is passed through damping spring and is connected the fly leaf about the backup pad, the sound production scope of not coplanar loudspeaker is restricted in the cooperation of convenient through interior sound absorption piece and outer sound absorption piece when using, avoid influencing each other between the loudspeaker, influence audience's experience.
2. This mutual interference stereo set is prevented to many loudspeaker, the outside through inhaling sound piece top including is connected with spacing post, the outside fixed mounting that makes spacing post bottom has tooth, the fixed tooth cover of outside activity suit at tooth, the top fixed connection movable sleeve that makes fixed tooth cover, the pull plate is connected through reset spring and first damping cover in the top of inhaling the sound piece outward simultaneously, the movable sleeve is connected to the bottom that makes the pull plate left end, the convenient relative angle who adjusts interior sound piece and outer sound piece when using, conveniently guarantee to inhale the sound effect, avoid partial sound to receive the reflection, influence the sound of normal propagation.
3. This mutual interference stereo set is prevented to many loudspeaker, through the outside fixedly connected with connection piece in the audio main unit four corners, make and install the connecting block between the connection piece, outside fixedly connected with limiting plate at the connecting block, the perpendicular version mutually perpendicular in the messenger limiting plate outside, install first support column simultaneously between two connection pieces, the inboard that makes interior sound absorption piece is connected with first rotating sleeve, first support column and the cooperation of first rotating sleeve when not going on to use, conveniently make the outer sound absorption piece of interior sound absorption piece earphone protect loudspeaker, avoid the dust fall of loudspeaker, simultaneously when using, conveniently restrict the position of interior sound absorption piece through the limiting plate, it is different to avoid the arm-tie sound producing effect of different faces.
4. This mutual interference stereo set is prevented to many loudspeaker avoids the stereo set to receive different magnetic field interference under different environment through set up testing arrangement on the audio body, causes the phenomenon of aphonia or wrong sound, before the user uses the stereo set, carries out self earlier and detects, through broadcast test audio frequency, gather the first audio frequency that the stereo set sent and carry out the analysis, acquire the frequency that is disturbed by the surrounding environment, when the user passes through the audio frequency of this frequency of stereo set broadcast, in time adjust the user and provide high-quality use experience.
5. This mutual interference stereo set is prevented to many loudspeaker, through set up the device of making an uproar that falls in the audio main part when the user uses the stereo set, can eliminate the noise of surrounding environment, only amplify the sound that the user sent, at first gather the real-time audio frequency that the user sent, through applying the window function to real-time audio frequency, acquire the intensity of noise, recycle delay method delays real-time audio frequency, acquire the noise in the real-time audio frequency, establish anti-noise, carry out the public address through the body after eliminating the noise in the real-time audio frequency, so not only reached the purpose of public address, user's use experience has still been improved.
Drawings
FIG. 1 is a schematic view of a storage structure according to the present invention;
FIG. 2 is a schematic expanded view of the present invention;
FIG. 3 is a schematic structural diagram of a limiting plate according to the present invention;
FIG. 4 is a schematic structural diagram of an internal acoustic mass according to the present invention;
FIG. 5 is a schematic view of the structure of the external sound absorption block of the present invention;
FIG. 6 is a schematic structural view of a spacing post according to the present invention.
In the figure: 1. a main body of the sound equipment; 2. connecting sheets; 3. connecting blocks; 4. a limiting plate; 5. a first support column; 6. a first rotating sleeve; 7. an inner sound absorption block; 8. a second support column; 9. a second rotating sleeve; 10. an outer sound absorbing block; 11. a limiting post; 12. teeth; 13. fixing a gear sleeve; 14. a movable sleeve; 15. a return spring; 16. a first damping sleeve; 17. pulling a plate; 18. sound-absorbing sponge; 19. supporting the hard board; 20. a sound-absorbing panel; 21. a sound absorption hole; 22. a support plate; 23. a damping spring; 24. a movable plate; 25. and a second damping sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below 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.
Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a mutual interference stereo set is prevented to many loudspeaker, including audio main 1, the outside fixed mounting in audio main 1 upper and lower side four corners has connection piece 2, fixed mounting has connecting block 3 between two upper and lower connection pieces 2, the outside movable mounting of connecting block 3 has limiting plate 4, utilize the setting of connecting block 3 and limiting plate 4, when using, conveniently carry on spacingly to interior sound absorption piece 7 and outer sound absorption piece 10, conveniently make the restriction of interior sound absorption piece 7 personally submit one hundred thirty-five degrees angles for with the sound production loudspeaker, conveniently make outer sound absorption piece 10 and sound production loudspeaker face mutually perpendicular, conveniently thoroughly absorb unnecessary sound wave, fixed mounting has first support post 5 between two upper and lower connection pieces 2, the outside movable sleeve of first support post 5 is equipped with first rotating sleeve 6, through the setting of first rotating sleeve 5, utilize the cooperation of first rotating sleeve 6 when using, conveniently rotate interior sound absorption piece 7, make interior sound absorption piece 7 rotate around first support post 5, can make interior sound absorption piece 7 carry out dust prevention through sound absorption piece 7 when not using loudspeaker.
First 6 outside fixedly connected with of rotating sleeve internal sound absorption piece 7, the inside fixed mounting in the internal sound absorption piece 7 outside has second support column 8, the outside movable sleeve of second support column 8 is equipped with the second and rotates cover 9, the outside fixedly connected with of second rotation cover 9 inhales sound piece 10 outward, the cooperation of internal sound absorption piece 7 and external sound absorption piece 10, the convenient sound production to different face loudspeaker is kept apart, avoid the sound production mutual interference between the loudspeaker, influence the normal use of stereo set, the setting of second rotation cover 9 and second support column 8 simultaneously, conveniently adjust the angle of internal sound absorption piece 7 and external sound absorption piece 10.
Referring to fig. 3 and 6, a limiting column 11 is fixedly connected to the upper portion of the outer side of the inner sound absorption block 7, teeth 12 are fixedly mounted on the outer side of the limiting column 11 close to the bottom, a fixed tooth sleeve 13 is movably sleeved on the outer portion of the bottom end of the limiting column 11, a tooth socket adapted to the teeth 12 is formed in the inner side of the fixed tooth sleeve 13, the height value of the fixed tooth sleeve 13 is the same as the height value of the teeth 12, and a handheld pulling plate 17 is pulled upwards to enable the first damping sleeve 16 and the first damping sleeve 16 to be in a stretching state under the action of the pulling plate 17. Meanwhile, the pulling plate 17 can drive the movable sleeve 14 and the fixed gear sleeve 13 to move upwards outside the limiting column 11, so that the fixed gear sleeve 13 moves to the upper part of the gear teeth 12, then the fixed gear sleeve 13 and the gear teeth 12 are arranged, when in use, the fixed movement between the inner sound absorption block 7 and the outer sound absorption block 10 is conveniently controlled, the outer sound absorption block 10 can conveniently move around the outer side of the inner sound absorption block 7, the angle of the outer sound absorption block 10 is conveniently adjusted, the movable sleeve 14 is fixedly connected above the fixed gear sleeve 13, the bottom of the rear side of the reset spring 15 is fixedly connected with the top surface of the movable sleeve 14, the reset spring 15 is positioned in the inner cavity of the first damping sleeve 16, a column-shaped groove matched with the limiting column 11 is formed in the rear side of the reset spring 15, the outer sound absorption block 10 is rotated, so that the outer sound absorption block 10 drives the second rotating sleeve 9 to rotate around the second supporting column 8, the outer sound absorption block 10 is enabled to rotate to the outer side of the outer sound absorption block 10 to be attached to the outer side of the connecting block 3, meanwhile, the fixed gear sleeve 13 and the movable sleeve 14 can rotate around the limiting column 11, the rotation center of the outer sound absorption block 10 is conveniently limited, the reset spring 15 is fixedly installed above the outer sound absorption block 10, the first damping sleeve 16 is fixedly installed above the outer sound absorption block 10, the pull plate 17 is fixedly installed at the top end of the reset spring 15, the pull plate 17 is loosened, the reset spring 15 and the first damping sleeve 16 drive the pull plate 17 to move downwards, the fixed gear sleeve 13 is enabled to move to the outer portion of the teeth 12, the teeth 12 fix the fixed gear sleeve 13, meanwhile, the fixed gear sleeve 13 can fix the movable sleeve 14 and the pull plate 17 with the outer sound absorption block 10, fixing of the movable sleeve 14 and the pull plate 17 with the outer sound absorption block 10 is conveniently completed, and use of the device is facilitated.
Referring to fig. 4 to 5, sound absorbing sponges 18 are fixedly mounted on left and right walls of an inner cavity of an inner sound absorbing block 7, a supporting hard plate 19 is fixedly mounted on an inner side of the sound absorbing sponge 18, a sound absorbing plate 20 is fixedly mounted in the inner cavity of the inner sound absorbing block 7, sound absorbing holes 21 are formed in the inner side of the sound absorbing plate 20, sound waves close to a horn enter the inner cavity of the inner sound absorbing block 7 through the inner sound absorbing block 7, the sound absorbing sponges 18 absorb sound once to reduce noise, then the sound is further reduced after passing through the supporting hard plate 19, part of the sound is sent back to the inner cavity of the sound absorbing sponges 18 to be silenced, mutual interference of sound between adjacent speakers is conveniently avoided, a rectangular groove is formed in the top end of the inner sound absorbing block 7 and located above a gap between the supporting hard plates 19 and the sound absorbing plate 20, the two sound absorbing plates 20 are located between the two supporting hard plates 19, sound entering the supporting hard plates 19 is eliminated through clear water, meanwhile, the sound-deadening and sound-absorbing board 20 can complete sound deadening by matching with clear water, and then after use, the sound-absorbing effect can be effectively increased, and sound leakage is avoided, the inner cavity of the sound-absorbing block 10 is fixedly connected with the supporting plate 22, the left side and the right side of the supporting plate 22 are fixedly connected with the damping springs 23 which are uniformly distributed, the outer side of the supporting plate 22 is fixedly connected with the second damping sleeves 25 which are uniformly distributed, the outer part of the damping spring 23 is fixedly connected with the movable plate 24, when sound waves are vertically transmitted to the sound-absorbing block 10, the sound waves can enter the inner cavity of the sound-absorbing block 10 and then are transmitted to the movable plate 24, so that the movable plate 24 vibrates, and then the vibration absorption is completed by matching the damping springs 23 and the movable plate 24, sound absorption is performed, complete sound deadening is facilitated, the transmission of sound in the air is reduced, and the damping springs 23 are positioned inside the second damping sleeves 25, the movable plate 24 is movably sleeved in the inner cavity of the outer sound absorption block 10, the outer side of the movable plate 24 is located on the inner side of the left wall and the right wall of the inner cavity of the outer sound absorption block 10, and gaps are reserved between the movable plate 24 and the inner wall of the outer sound absorption block 10 when in use, so that sound can be conveniently transmitted back and forth between the air, sound can be fully absorbed, mutual interference between loudspeakers is avoided, and the sound production effect of the loudspeakers is influenced.
To sum up, this mutual interference stereo set is prevented to many loudspeaker, when needs use, through inserting limiting plate 4 to the outside of connecting block 3, make interior sound absorption piece 7 drive first rotating sleeve 6 and rotate around first support column 5 afterwards, make interior sound absorption piece 7 rotate the outside of interior sound absorption piece 7 and laminate with the outside of connecting block 3, handheld arm-tie 17 upwards pulls afterwards, makes first damping cover 16 and first damping cover 16 be in tensile state under arm-tie 17's effect. Meanwhile, the pull plate 17 can drive the movable sleeve 14 and the fixed gear sleeve 13 to move upwards outside the limiting column 11, so that the fixed gear sleeve 13 moves to the upper part of the gear teeth 12, then the outer sound absorption block 10 is rotated, the outer sound absorption block 10 drives the second rotating sleeve 9 to rotate around the second supporting column 8, the outer sound absorption block 10 rotates to the outer side of the outer sound absorption block 10 to be attached to the outer side of the connecting block 3, then the pull plate 17 is loosened, the return spring 15 and the first damping sleeve 16 drive the pull plate 17 to move downwards, so that the fixed gear sleeve 13 moves to the outer part of the gear teeth 12, the gear teeth 12 fix the fixed gear sleeve 13, meanwhile, the fixed gear sleeve 13 can fix the movable sleeve 14 and the pull plate 17 with the outer sound absorption block 10, so that the outer sides of the sound absorption block 7 and the outer sound absorption block 10 are attached to the outer side of the connecting block 3, then water is added into the inner cavity of the inner sound absorption block 7 through a rectangular groove above the inner sound absorption block 7, so that clean water enters between the two supporting hard plates 19, when the loudspeaker of the main sound body 1 is used, sound is radiated in a fan shape, the sound close to the loudspeaker firstly enters the inner cavity of the inner sound absorption block 7 through the inner sound absorption block 7, the sound absorption sponge 18 firstly absorbs sound once to reduce the noise, then the sound continuously passes through the support hard plates 19 to be further reduced, part of the sound is sent back to the inner cavity of the sound absorption sponge 18 to be silenced, the sound entering the support hard plates 19 can eliminate the vibration of the sound through clear water between the two support hard plates 19 and is simultaneously silenced, the sound absorption plate 20 can complete the silencing by matching with the clear water, when the sound is radiated outwards, the sound is vertically transmitted to the outer sound absorption block 10, the sound enters the inner cavity of the outer sound absorption block 10 and is then transmitted to the movable plate 24, so that the movable plate 24 vibrates, and then the damping is completed by matching of the damping spring 23 and the movable plate 24, inhale the sound, after finishing using afterwards, rotate outer sound absorption piece 10 and be one hundred eighty degrees as to interior sound absorption piece 7, make interior sound absorption piece 7 rotate the outside to loudspeaker around first support column 5 afterwards, protect loudspeaker, avoid dust to get into loudspeaker's inner chamber, can.
The utility model provides a mutual interference stereo set is prevented to many loudspeaker, be equipped with testing arrangement on the stereo set main part 1, include:
the playing unit is used for controlling the loudspeaker to play the specified detection audio;
the acquisition unit is used for acquiring a first audio frequency emitted by the loudspeaker;
the processing unit is used for establishing a time domain axis according to the specified detection audio and by combining a preset sinusoidal signal, inputting the first audio to the time domain axis and acquiring a test audio;
dividing the test audio into a plurality of sub-tone frequency bands based on the period of the sinusoidal signal, and respectively drawing an envelope line corresponding to each sub-tone frequency band in a preset coordinate system;
simultaneously acquiring the audio energy corresponding to each sub-audio frequency band, and establishing a frequency band-energy list;
dividing the specified detection audio into sub detection sections with corresponding lengths based on the frequency band-energy list, respectively acquiring standard energy corresponding to each sub detection section, and establishing a frequency band-standard energy list;
comparing the frequency band-energy list with the frequency band-standard energy, marking a sub-tone frequency band corresponding to the inconsistency of the standard energy on the test audio, eliminating a first envelope line of the sub-tone frequency band which is not marked in the preset coordinate system, and obtaining the amplitude of the residual envelope line;
respectively adjusting the amplitude of the residual envelope lines to a preset standard, and acquiring a second amplitude of the adjusted corresponding marked sub-tone frequency band;
and obtaining the adjusted adjusting amplitude corresponding to each sub-tone frequency range of the test audio frequency, establishing an amplitude adjusting scheme, and adjusting the sound signal corresponding to the first audio frequency to a second audio frequency when the user uses the main sound body.
In this example, the specified detected audio represents a multi-band sound signal;
in this example, the time domain axis represents that established based on the length and playing time domain of the specified detected audio;
in this example, the envelope represents a line tangent to the lowest frequency of the sub-tone band;
in this example, the bin-to-energy list represents a table of audio energy collections for each sub-bin.
The working principle and the beneficial effects of the technical scheme are as follows: this mutual interference stereo set is prevented to many loudspeaker, avoid the stereo set to receive different magnetic field interference under different environment through set up testing arrangement on sound main body, cause the phenomenon of aphonia or wrong sound, before the user uses the stereo set, self detects earlier, through broadcast test audio frequency, gather the first audio frequency that the stereo set sent and carry out the analysis, acquire the frequency by surrounding environment interference, when the user passes through the audio frequency of this frequency of stereo set broadcast, in time adjust the user and provide high-quality use and experience.
The utility model provides a mutual interference stereo set is prevented to many loudspeaker, be equipped with the noise reduction device on the stereo set main part 1, include:
a collecting unit for collecting real-time audio emitted from a speaker when a user uses the main body 1;
the noise reduction unit is used for acquiring pulses of real-time audio, selecting a first window function from a preset window function list based on the pulses and establishing a windowing domain;
inputting the real-time audio into the windowing domain to obtain a first windowing audio, inputting the first windowing audio into a preset playing domain to be played, and obtaining a voice characteristic value in the playing process of the first windowing audio;
acquiring the noise intensity of the real-time audio in a preset characteristic value-intensity list based on the voice characteristic value, and generating a first noise reduction parameter;
the noise reduction unit is further configured to divide the real-time audio signal into a plurality of sub-period segments based on the period of the real-time audio, and perform frequency delay on each sub-period segment to obtain a corresponding segment to be detected;
sequencing the sections to be detected in sequence based on the position sequence of the sub-period sections on the real-time audio signal, and marking a first noise section overlapped with a front adjacent position on each section to be detected;
establishing a real-time noise signal according to the first noise section, acquiring a complementary signal of the real-time noise signal, and generating a second noise reduction parameter;
and establishing a noise reduction shaft based on the first noise reduction parameter and the second noise reduction parameter, and outputting the noise reduction audio to play through the noise reduction shaft by the real-time audio.
In this example, the window function represents a time-domain clipping function that clips the signal;
in this example, the speech feature values represent speech intensity features of the first windowed audio;
in this example, the frequency delay process means that the frequency of the sub-period segment is separated from the time domain, and the frequency is post-shifted to generate a characteristic that does not correspond to the time domain.
The working principle and the beneficial effects of the technical scheme are as follows: this mutual interference stereo set is prevented to many loudspeaker, when the user uses the stereo set through setting up the device of making an uproar that falls in the audio main body, can eliminate the noise of surrounding environment, only amplify the sound that the user sent, at first gather the real-time audio frequency that the user sent, through applying the window function to real-time audio frequency, acquire the intensity of noise, recycle delay method and postpone real-time audio frequency, acquire the noise in the real-time audio frequency, establish anti-noise, again carry out the public address through the body after eliminating the noise in the real-time audio frequency, so not only reached the purpose of public address, user's use experience has still been improved.
The utility model provides a mutual interference stereo set is prevented to many loudspeaker, testing arrangement still includes:
the rechecking unit is used for playing the regulated specified detection audio and collecting the rechecking audio corresponding to the played regulated specified detection audio;
dividing the reinspection audio into reinspection sections with preset lengths, inputting the reinspection sections into a preset space, and respectively drawing the reinspection envelope lines corresponding to the reinspection sections;
calculating the retest voice characteristic value of the retest audio according to formulas (I) and (II);
wherein δ represents a first frequency conversion coefficient between the adjusted specified detected audio and the retested audio, sgn () represents a step function, e represents a second frequency conversion coefficient between the specified detected audio before and after adjustment, γ represents an adjustment coefficient, and f represents a historical second frequency conversion coefficient mean value;
wherein T represents the retest speech characteristic value of the retest audio, r n Representing the amplitude of the rechecking envelope of the nth rechecking segment, and m representing the total number of the rechecking segments;
when the rechecking voice characteristic value of the rechecking audio is not in a preset range, acquiring the minimum difference value between the rechecking voice characteristic value and a standard range, and generating an amplitude compensation coefficient;
the processing unit is further configured to adjust the recheck envelope based on the amplitude compensation coefficient, obtain a corresponding third frequency based on the recheck envelope, and replace the second frequency with the third frequency.
The working principle and the beneficial effects of the technical scheme are as follows: in order to ensure that the intensity of the sound signal after the frequency conversion is consistent with that of the sound signal of other frequencies when the sound signal after the frequency conversion is played, the regulated specified detection audio is rechecked, and the second frequency is regulated to achieve the preset purpose.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a mutual interference stereo set is prevented to many loudspeaker, includes stereo set main part (1), its characterized in that: the loudspeaker is characterized in that connecting pieces (2) are fixedly arranged on the outer portions of four corners above and below the loudspeaker body (1), a connecting block (3) is fixedly arranged between the upper connecting piece and the lower connecting piece (2), a limiting plate (4) is movably arranged on the outer side of the connecting block (3), a first supporting column (5) is fixedly arranged between the upper connecting piece and the lower connecting piece (2), a first rotating sleeve (6) is movably sleeved on the outer portion of the first supporting column (5), an inner sound absorption block (7) is fixedly connected to the outer side of the first rotating sleeve (6), a second supporting column (8) is fixedly arranged inside the outer side of the inner sound absorption block (7), a second rotating sleeve (9) is movably sleeved on the outer portion of the second supporting column (8), and an outer sound absorption block (10) is fixedly connected to the outer side of the second rotating sleeve (9);
the utility model discloses a sound absorption device, including interior sound absorption piece (7), top fixedly connected with is spacing post (11) in the outside, outside fixed mounting that spacing post (11) are close to the bottom has tooth (12), the outside movable sleeve of spacing post (11) bottom is equipped with fixed tooth cover (13), the top fixedly connected with movable sleeve (14) of fixed tooth cover (13), the top fixed mounting who inhales sound piece (10) outward has reset spring (15), the top fixed mounting who inhales sound piece (10) outward has first damping cover (16), the top fixed mounting of reset spring (15) has arm-tie (17).
2. The multi-horn anti-mutual-interference sound box as claimed in claim 1, wherein: the utility model discloses a sound absorption piece, including interior sound absorption piece (7), the inboard fixed mounting who inhales sound sponge (18) has support hardboard (19), the inner chamber fixed mounting of interior sound absorption piece (7) has abatvoix (20), sound absorption hole (21) have been seted up to the inboard of abatvoix (20).
3. The multi-horn anti-mutual-interference sound box as claimed in claim 1, wherein: the outer sound absorption block (10) is characterized in that a supporting plate (22) is fixedly connected to an inner cavity, damping springs (23) are fixedly connected to the left side and the right side of the supporting plate (22) and are evenly distributed, second damping sleeves (25) are fixedly connected to the outer side of the supporting plate (22) and are evenly distributed, and a movable plate (24) is fixedly connected to the outer portion of each damping spring (23).
4. The multi-horn anti-mutual-interference sound box as claimed in claim 1, wherein: the bottom of reset spring (15) rear side and the top surface fixed connection of movable sleeve (14), reset spring (15) are located the inner chamber of first damping cover (16), the post groove that is equipped with spacing post of adaptation (11) is opened to the rear side of reset spring (15).
5. The multi-horn anti-mutual-interference sound box as claimed in claim 1, wherein: the inner side of the fixed tooth sleeve (13) is provided with a tooth socket matched with the teeth (12), and the height value of the fixed tooth sleeve (13) is the same as that of the teeth (12).
6. The multi-horn anti-mutual-interference sound box as claimed in claim 2, wherein: the top end of the inner sound absorption block (7) is provided with a rectangular groove, the rectangular groove is positioned above a gap between the support hard plate (19) and the sound absorption plate (20), and the two sound absorption plates (20) are positioned between the two support hard plates (19).
7. The multi-horn anti-mutual-interference sound box as claimed in claim 3, wherein: the damping spring (23) is located inside the second damping sleeve (25), the movable sleeve of the movable plate (24) is movably sleeved in the inner cavity of the outer sound absorption block (10), and the outer face of the movable plate (24) is located on the inner side of the left wall and the right wall of the inner cavity of the outer sound absorption block (10).
8. The multi-horn anti-mutual-interference sound box according to claim 1, wherein a testing device is arranged on the sound box body (1), and the testing device comprises:
the playing unit is used for controlling the loudspeaker to play the specified detection audio;
the acquisition unit is used for acquiring a first audio frequency emitted by the loudspeaker;
the processing unit is used for establishing a time domain axis according to the specified detection audio and by combining a preset sinusoidal signal, inputting the first audio to the time domain axis and acquiring a test audio;
dividing the test audio into a plurality of sub-tone frequency bands based on the period of the sinusoidal signal, and respectively drawing an envelope line corresponding to each sub-tone frequency band in a preset coordinate system;
simultaneously acquiring the audio energy corresponding to each sub-audio frequency band, and establishing a frequency band-energy list;
dividing the specified detection audio into sub detection segments with corresponding lengths based on the frequency band-energy list, respectively acquiring standard energy corresponding to each sub detection segment, and establishing a frequency band-standard energy list;
comparing the frequency band-energy list with the frequency band-standard energy, marking a sub-tone frequency band corresponding to the inconsistency of the standard energy on the test audio, eliminating a first envelope line of the sub-tone frequency band which is not marked in the preset coordinate system, and obtaining the amplitude of the residual envelope line;
respectively adjusting the amplitude of the residual envelope lines to a preset standard, and acquiring a second amplitude of the adjusted corresponding marked sub-tone frequency band;
and obtaining the adjusted adjusting amplitude corresponding to each sub-tone frequency range of the checked audio frequency, establishing an amplitude adjusting scheme, and adjusting the sound signal corresponding to the first audio frequency to a second audio frequency when the user uses the main sound body (1).
9. The multi-horn anti-mutual-interference sound box according to claim 1, wherein a noise reduction device is arranged on the sound box body (1), and the noise reduction device comprises:
the collecting unit is used for collecting real-time audio emitted by a loudspeaker when a user uses the main sound body (1);
the noise reduction unit is used for acquiring pulses of real-time audio, selecting a first window function from a preset window function list based on the pulses and establishing a windowing domain;
inputting the real-time audio into the windowing domain to obtain a first windowing audio, inputting the first windowing audio into a preset playing domain to be played, and obtaining a voice characteristic value in the playing process of the first windowing audio;
acquiring the noise intensity of the real-time audio in a preset characteristic value-intensity list based on the voice characteristic value, and generating a first noise reduction parameter;
the noise reduction unit is further configured to divide the real-time audio signal into a plurality of sub-period segments based on the period of the real-time audio, and perform frequency delay on each sub-period segment to obtain a corresponding segment to be detected;
sequencing the sections to be detected in sequence based on the position sequence of the sub-period sections on the real-time audio signal, and marking a first noise section overlapped with a front adjacent position on each section to be detected;
establishing a real-time noise signal according to the first noise section, acquiring a complementary signal of the real-time noise signal, and generating a second noise reduction parameter;
and establishing a noise reduction shaft based on the first noise reduction parameter and the second noise reduction parameter, and outputting the noise reduction audio to play through the noise reduction shaft by the real-time audio.
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| CN213028455U (en) * | 2020-11-05 | 2021-04-20 | 王宗剑 | Loudspeaker box with multi-directional arrangement |
| CN213754867U (en) * | 2020-12-31 | 2021-07-20 | 广东三欣实业有限公司 | Integrated home theater sound device |
| CN214154742U (en) * | 2020-11-30 | 2021-09-07 | 深圳市伟毅宸科技股份有限公司 | Multi-loudspeaker interference-preventing intelligent sound box |
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| DE112010000671T5 (en) * | 2009-02-20 | 2012-11-08 | Nittobo Acoustic Engineering Co. Ltd. | Sound generation system, sound recording system, sound generation method, sound recording method, sound adjustment method, sound adjustment program, sound field adjustment system, speaker stands, furniture, speaker cabinet and speaker device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN213028455U (en) * | 2020-11-05 | 2021-04-20 | 王宗剑 | Loudspeaker box with multi-directional arrangement |
| CN214154742U (en) * | 2020-11-30 | 2021-09-07 | 深圳市伟毅宸科技股份有限公司 | Multi-loudspeaker interference-preventing intelligent sound box |
| CN213754867U (en) * | 2020-12-31 | 2021-07-20 | 广东三欣实业有限公司 | Integrated home theater sound device |
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Effective date of registration: 20240506 Address after: No. 1623 Yongle East Road, Zhuangshi Street, Zhenhai District, Ningbo City, Zhejiang Province, 315100 Patentee after: NINGBO ZHENHAI KEBITE SOUND EQUIPMENT CO.,LTD. Country or region after: China Address before: 518000 Room 101, No. 88, zone 1, No. 5 Industrial Zone, Shangfen community, Minzhi street, Longhua District, Shenzhen, Guangdong Province Patentee before: SHENZHEN V-SENT TECHNOLOGY CO.,LTD. Country or region before: China |
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