CN107172531B - A kind of linear array sound of round-the-clock level pressure and its fault judgment method - Google Patents
A kind of linear array sound of round-the-clock level pressure and its fault judgment method Download PDFInfo
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- CN107172531B CN107172531B CN201710577932.6A CN201710577932A CN107172531B CN 107172531 B CN107172531 B CN 107172531B CN 201710577932 A CN201710577932 A CN 201710577932A CN 107172531 B CN107172531 B CN 107172531B
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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
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Abstract
The present invention provides a kind of round-the-clock linear array sound of level pressure, it uses fixed structure piece and concatenation fastener is fixed and concatenates multiple adjacent water-proof speakers, the number of its water-proof speaker component can be with self-defining, speaker number can be quickly increased or decreased, to adapt to different application scenarios.Using designs such as waterproof cloth, water proof ring, water-proof loudspeaker, waterproof plug-in unit connecting seat, waterproof connecting lines, possess professional waterproof ability.Circuit is carried out by waterproof plug-in unit connecting seat and waterproof connecting line between especially multiple water-proof speakers to connect, can not only all weather operations, the directive property of the sound column sound intensity and sound can also be improved.Passive sound intensity display module can send out the different visible light of intensity according to the size of loudspeaker sound, remind the sound intensity of the current sound column of user.When voltage exceeds threshold value, then shows the visible light of different colours, make warning function.Passive sound intensity display module, moreover it is possible to quickly judge step-down transformer, passive sound intensity display module, water-proof speaker component faults.
Description
Technical field
The present invention relates to the fields of amplifying, the linear array sound of a kind of round-the-clock level pressure especially and its breakdown judge side
Method.
Background technology
With the development of economy and the needs of state utility function construction, broadcast system are more and more widely used, than
Such as：Many megaevent, outdoor large theatrical performances etc..
Generally the propagation of sound can be carried out in these occasions, industry using traditional sound column or Linear array loundspeaker box.It passes
System sound column is the cylindrical sound box for being arranged vertically multiple loudspeaker units in same cavity, usually metal shell；Line
Property array speaker be several independent Professional sound boxes combination, be often active audio amplifier, shell is mostly wooden.
But the mode of amplifying has the following disadvantages.
1. the loudspeaker unit quantity in traditional sound column is fixed, according to different scenes can not increase at any time or
It reduces.
2. there are non-watertight, the relatively high problems of cost for Linear array loundspeaker box.
3. can not know the intensity of sound size of loud speaker by vision.
4. can not failure judgement point, debugging is more inconvenient.
Therefore, designing a set of can show with self-defining loudspeaker unit quantity, waterproof and intuitively its sound intensity
Size, the linear array sound of round-the-clock level pressure that quickly can be judged and debug, it appears particularly urgent.
Closest to the analysis of technology and comparison in the case of existing.
Currently, immediate technical solution is in the case of existing：Application No. is CN103037284A's《A kind of linear array sound
Case》(hereinafter referred " documents 1 "), Authorization Notice No. are CN206117972U's《A kind of linear array sound equipment hanging》It is (hereafter simple
" documents 2 ") and Authorization Notice No. be referred to as CN206024074U's《Combined type linear array sound box system》(hereinafter referred " comparison
File 3 ").
Documents 1, documents 2, documents 3 are all related to linear array speaker, Linear array loundspeaker box, but they
There is prodigious difference with the present invention.
Documents 1, application No. is CN103037284A's《A kind of linear array speaker》, the speaker back side is equipped with adjusting
Device, regulating device include adjustment structure and adjusting rod, are connected by the regulating device on adjacent speaker so that adjacent two sound
Plane and the face of speaking of another speaker where the face of speaking of the one of speaker of case are arranged in an angle, and angle is more than 0 degree,
And connecting hole is articulated and connected by articulated structure on speaker connector and adjacent speaker.The multiple speakers of the present invention pass through left side hand
Bolt, right side hand-tighten bolts adjusting angle are twisted, and multiple speakers use fixed structure piece and concatenation fastener in the present invention
For fixing and concatenating multiple adjacent water-proof speakers.Documents 1 adjust the connection between the angle and multiple speakers of speaker
Structure and connection method are different with the present invention.
Documents 2, Authorization Notice No. are CN206117972U's《A kind of linear array sound equipment hanging》, it is mainly a kind of will be more
The hanging that a speaker connects includes hanger, front side portion connector, rear attachment, front side portion connection sheet and rear portion
Connection sheet, and multi-angle regulation can be carried out by commissioning requirements, the angle adjustable of each sound enclosure is 0 degree of -8 degree.The present invention
Fixed structure piece and concatenation fastener has been used to fix and concatenate multiple adjacent water-proof speakers, without hanger, connection component is different,
Connection method is also different, and the multiple speakers of the present invention adjust angle by left side hand-tighten bolts, right side hand-tighten bolts, with comparison
The method that file 2 adjusts angle also differs.
Documents 3, Authorization Notice No. are CN206024074U's《Combined type linear array sound box system》, it is that will suspend in midair
Frame, connecting rod, the first sound equipment group, the connection of the second sound equipment group ... N sound equipment groups stack, and the number of sound equipment group is solid
Fixed.The multiple water-proof speakers of the present invention are fixed and are connected in series, connection method by fixed structure piece and concatenation fastener
It is different from documents 3.Moreover, water-proof speaker number of the present invention can be increased or decreased with self-defining.
Documents 1, documents 2 and documents 3 are different with the present invention.
Invention content
The problem to be solved in the present invention.
The present invention is provided under above background.It is an object of the present invention to provide a kind of round-the-clock linear array sounds of level pressure
And its fault judgment method, can freely be customized by several adjacent and number, face of speaking are in the water-proof speaker group of the same side
Part is constituted, and by fixed structure piece and concatenation fastener, several water-proof speakers in the same side is attached, to enhance sound
The sound intensity and directive property of column.Moreover, because speaker component uses waterproof cloth, water proof ring, water-proof loudspeaker, the connection of waterproof plug-in unit
The designs such as seat, waterproof connecting line, can professional waterproof, therefore outdoor environment can be adapted to round-the-clockly.Meanwhile round-the-clock level pressure
Linear array sound equipment also carries passive sound intensity display module, can go out current sound column by visual observation in real time, intuitively
Intensity of sound size can quickly judge guilty culprit if there is failure.
Built-in N number of loud speaker is duplicate in linear array sound column, thus the sound pressure of these loud speakers be it is identical,
The overall sound pressure level of linear array sound column is：One loud speaker sound pressure level (dB)+10lgN (dB), wherein N are the number of identical loudspeaker,
Thus formula is it is known that linear array sound column can improve the sound intensity.
And linear array sound column is in narrow beam in main shaft vertical plane directive property, and energy supposition can radiate at a distance, can
The directive property of very good vertical covering surface is provided, is formed from close and remote covering, good sound effective value can be obtained.Cause
This, linear array sound column is the directive property that can promote sound.
The technical solution solved the problems, such as.
One aspect of the present invention is related to including waterproof technique and voluntarily configures water-proof speaker number of components, and waterproof technique includes：
Waterproof cloth, water proof ring, water-proof loudspeaker, waterproof plug-in unit connecting seat, waterproof connecting line etc.；Simultaneously as using fixed structure
Multiple adjacent water-proof speakers are fixed and concatenated to part and concatenation fastener, thus the number of water-proof speaker be can be with self-defining
's.
The need of the present invention implement function such as.
The intensity of sound size that can intuitively show sound column shows that the intensity of light is big, if sound if sound is strong
It is weak, then show that the intensity of light is weak；If voltage has been more than certain threshold value, sends out different colours light and alarm to user.
It can judge the failures such as the failure of sound column, including water-proof speaker component, passive sound intensity display module.
The advantage of the present invention.
The present invention has very big difference with traditional sound column：First, the number of water-proof speaker can be voluntarily arranged in it, to adapt to
Different scene applications；Secondly, it is waterproof, can be with all weather operations；Furthermore it can intuitively show sound column sound
Intensity；Finally, it can also judge the guilty culprit of sound column.
For the present invention compared with traditional sound column, it is more easy to use, and connection is also opposite simple, reduces study
Cost and time, non-specialized-technical personnel left-hand seat and can also grasp quickly.Due to being round-the-clock level pressure linear array sound
It rings, there is no need to artificial on duty.
Description of the drawings
A kind of round-the-clock linear array sound operating diagrams of level pressure of Fig. 1.
Fig. 2 water-proof speaker assembly assumption diagrams.
Fig. 3 fixed structure pieces and concatenation fastener constructions figure.
The passive sound intensity display module operating diagrams of Fig. 4.
The passive sound intensity display module breakdown judge flow charts of Fig. 5.
Label declaration.
100：Water-proof speaker component.
101：Guard.
102：Waterproof cloth.
103：Procapsid.
104：Water proof ring.
105：Step-down transformer.
106：Passive sound intensity display module.
1061：Drive circuit assembly.
10611：Division module.
10612：Current limiter.
10613：LED drive circuit.
10614：LED warning circuits.
1062：LED array of display components.
10621：A coloured light array of display.
10622：B coloured light array of display.
1063：Show figure astigmatism plate.
107：Water-proof loudspeaker.
108：Back casing.
109：Waterproof plug-in unit connecting seat.
110：Waterproof connecting line.
200：Fixed structure piece.
201：Left side brackets.
202：Right side holder.
203：Left side damping gasket.
204：Right side damping gasket.
205：Left side hand-tighten bolts.
206：Right side hand-tighten bolts.
207：Support locating rack.
208：Left side brackets fixing bolt.
209：Left side brackets spring shim.
210：Right side bracket fixing bolt.
211：Right side stand spring gasket.
212：Support locating rack fixed expansion bolt.
213：Support locating rack fixed expansion nut.
300：Concatenate fastener.
301：Concatenate fastening plates.
302：Support locating rack bolt.
303：Support locating rack spring shim.
Specific implementation mode
It is a kind of linear array sound of round-the-clock level pressure such as Fig. 1, it includes such as lower part：Water-proof speaker component, fixed knot
Component and concatenation fastener.
Water-proof speaker component includes：Guard, waterproof cloth, procapsid, water proof ring, step-down transformer, passive sound intensity display group
Part, water-proof loudspeaker, back casing, waterproof plug-in unit connecting seat, waterproof connecting line.
Passive sound intensity display module includes：Drive circuit assembly, LED array of display component, display figure astigmatism plate.
Drive circuit assembly includes：Division module, current limiter, LED drive circuit and LED warning circuits.
LED array of display components include：A coloured light array of display and B coloured light array of display；Display figure astigmatism plate is placed on
Between LED array of display and water-proof speaker guard.
Fixed structure piece includes：Left side brackets, right side holder, left side damping gasket, right side damping gasket, left side hand twist spiral shell
Bolt, right side hand-tighten bolts, support locating rack, left side brackets fixing bolt, left side brackets spring shim, right side holder fix spiral shell
Bolt, right side stand spring gasket, support locating rack fixed expansion bolt, support locating rack fixed expansion nut.
Concatenating fastener includes：Concatenate fastening plates, 2 support locating rack bolts, 2 support locating rack spring shims.
Such as Fig. 1, a kind of operating diagram of the round-the-clock linear array sound of level pressure, water-proof speaker number can voluntarily determine
Justice is fixed and is concatenated multiple adjacent water-proof speakers due to the use of fixed structure piece and concatenation fastener, increases or decreases anti-
The number of hygrechema case is very convenient；Power amplifier output voltage carries out voltage and is adjusted after being depressured by step-down transformer,
Stablized with output and matched voltage, outputs this to water-proof loudspeaker, make its sounding, due to the use of multiple water-proof speakers,
The sound column sound intensity can be improved, and promotes directive property；Used waterproof cloth, water proof ring, water-proof loudspeaker, waterproof plug-in unit connecting seat,
The designs such as waterproof connecting line, therefore it is waterproof, can accomplish all weather operations；It is shown since water-proof speaker possesses the passive sound intensity
Show component, therefore can intuitively show the sound intensity of sound column.
Such as Fig. 2, the structure chart of water-proof speaker component, waterproof plug-in unit connecting seat possesses input terminal and output end, waterproof connection
Line one end plug is inserted into the output end of upper water-proof speaker waterproof plug-in unit connecting seat, and it is anti-that other end plug is inserted into next water-proof speaker
The input terminal of water cutting part connecting seat connect to which water-proof speaker is carried out circuit with adjacent water-proof speaker.
Such as Fig. 3, fixed structure piece structure chart and concatenation fastener constructions figure can be divided into fixed structure piece structure chart and concatenation
Fastener constructions figure two parts.
Fixed structure piece：Left side brackets, right side holder, left side damping gasket, right side damping gasket, left side hand-tighten bolts,
Right side hand-tighten bolts, support locating rack, left side brackets fixing bolt, left side brackets spring shim, right side bracket fixing bolt, the right side
Side stand spring shim, support locating rack fixed expansion bolt, support locating rack fixed expansion nut.Wherein, left side brackets and
Right side holder is Z-shaped, and left side damping gasket and right side damping gasket are on the inside of Z-shaped supporting frame one end；Left side hand-tighten bolts
It is circle with right side hand-tighten bolts；Support locating rack is the iron plate that a cross section is U-shaped, and there are 3 drillings, two sides in front
There are 3 groups of (6) circular bores per side；Left/right side stand fixing bolt is hexagon socket head cap screw；Support locating rack fixed expansion spiral shell
Mother is outer-hexagonal nut.
Its connection method is：Left side brackets one end connects a water-proof speaker left side by left side damping gasket, left side hand-tighten bolts
Side；Right side holder one end is connected by right side damping gasket, right side hand-tighten bolts on the right side of water-proof speaker；The left side brackets other end with
Locating rack left end is supported, is connected with left side brackets spring shim by left side brackets fixing bolt, waterproof is fixed from left side physics
Speaker, left side brackets spring shim prevent from causing bolt to slide because of vibration；The right side holder other end and support locating rack right end,
It is connected with right side stand spring gasket by right side bracket fixing bolt, water-proof speaker, right side holder bullet is fixed from right side physics
Spring gasket prevents from causing bolt to slide because of vibration；2 bracket fixing bolts are spatially parallel to each other, to prevent left side brackets
It is rotated because of only 1 bolt with right side holder, to cause water-proof speaker to be subjected to displacement；Support locating rack passes through same
3 support locating rack fixed expansion screws of plane squeeze into positive 3 drilling of support locating rack, to be fixed on sound column.
Concatenate fastener：Fastening plates are concatenated, for the iron plate that a cross section is U-shaped, two sides there are 2 groups of brills up and down per side
Hole；2 support locating rack bolts；2 support locating rack spring shims.
Its series-mounting is：2 support locating rack bolts, 2 support locating rack spring shims pass through 2 in concatenation fastening plates
Group drilling supports locating rack for concatenating up and down, adjacent 2 water-proof speaker component strings is connected in round-the-clock constant-pressure line from structure
Property array sound.It is to prevent from causing bolt to slide because of vibration to support locating rack spring shim main function.
Such as Fig. 4, passive sound intensity display module operating diagram, the voltage after division module is depressured step-down transformer carries out
Adjustment, is stablized and matched voltage and current with output, the voltage and current after adjustment is exported to current limiter, while by voltage
It exports and gives LED warning circuits.
LED warning circuits only just open access when detecting that division module output voltage is more than or equal to threshold value, simultaneously will
After the electric current of step-down transformer input is reduced by current limiter, by LED warning circuits, export to the B coloured light of LED array of display
Array of display sends out B coloured light, alarms to user, it is excessively high to report to the current sound intensity.
After the electric current that current limiter exports division module reduces, by LED drive circuit, export to the A of LED array of display
Color array of display sends out A coloured light, while detecting the size of current after current limiter reduces, make to send out the brightness size of A coloured light with
This size of current is directly proportional, intuitively to show the power of water-proof loudspeaker sound：Then brightness is big greatly for electric current, to show sound
By force, the small then brightness of electric current is small, to show that sound is weak.
Show figure astigmatism plate, figure can be with customized, such as trade mark, mark etc., while A coloured light being shown
Array or (and) visible light that sends out of B coloured light array of display breaks up, it appears that it is evenly and natural.
Such as Fig. 5, passive sound intensity display module breakdown judge flow chart, fault judgment method includes：Detect that LED is shown
Array light-emitting, while water-proof loudspeaker is noiseless：Judge water-proof speaker component faults；Detect that LED array of display does not shine, simultaneously
Water-proof loudspeaker sounding：It is judged as passive sound intensity display module failure；Detect that LED array of display does not shine, while anti-bigcatkin willow
Sound device is noiseless：It is judged as step-down transformer failure or passive sound intensity display module and water-proof speaker component simultaneous faults.
It finally it should be emphasised that, specific implementation mode of the present invention is illustrative, without being restrictive, therefore
The present invention includes the embodiment being not limited to described in specific implementation mode, every according to the present invention by those skilled in the art
The other embodiment that technical solution obtains, also belongs to the scope of protection of the invention.
Claims (7)
1. a kind of linear array sound of round-the-clock level pressure, the round-the-clock linear array sound of level pressure can by several adjacent and number
The water-proof speaker component that freely customize, face of speaking is in the same side is constituted, and the round-the-clock linear array sound of level pressure also wraps
Fixed structure piece and concatenation fastener are included, for being attached the several water-proof speakers for being in the same side, to enhance sound column
The sound intensity and directive property；
The water-proof speaker component includes：
Guard, waterproof cloth, procapsid, water proof ring, step-down transformer, passive sound intensity display module, water-proof loudspeaker, back casing,
Waterproof plug-in unit connecting seat, waterproof connecting line；
The passive sound intensity display module configures in water-proof speaker, the sound intensity for showing water-proof loudspeaker, including：Driving
Circuit unit, LED array of display component, display figure astigmatism plate；
The wherein described drive circuit assembly includes：Division module, current limiter, LED drive circuit and LED warning circuits；
The wherein described LED array of display component includes：A coloured light array of display and B coloured light array of display；
The wherein described display figure astigmatism plate is placed between LED array of display and water-proof speaker guard.
2. the round-the-clock linear array sound of level pressure as described in claim 1, which is characterized in that above-mentioned fixed structure piece and string
Fastener is connect for fixing and concatenating multiple adjacent water-proof speakers.
3. the round-the-clock linear array sound of level pressure as described in claim 1, which is characterized in that the waterproof plug-in unit connecting seat
Possess input terminal and output end, waterproof connecting line one end plug is inserted into the defeated of upper water-proof speaker waterproof plug-in unit connecting seat
Outlet, other end plug is inserted into the input terminal of next water-proof speaker waterproof plug-in unit connecting seat, to carry out circuit connection.
4. the round-the-clock linear array sound of level pressure as described in claim 1, which is characterized in that above-mentioned fixed structure piece includes：
Left side brackets, right side holder, left side damping gasket, right side damping gasket, left side hand-tighten bolts, right side hand-tighten bolts, branch
Support locating rack, left side brackets fixing bolt, left side brackets spring shim, right side bracket fixing bolt, right side stand spring gasket,
Support locating rack fixed expansion bolt, support locating rack fixed expansion nut；Wherein, left side brackets and right side holder are Z-shaped
Type, left side damping gasket and right side damping gasket are on the inside of Z-shaped supporting frame one end；Left side hand-tighten bolts and right side hand-tighten bolts are equal
For circle；Support locating rack is the iron plate that a cross section is U-shaped, and front has 3 drillings, two sides to have 3 groups of circles to bore per side
Hole, every group 2, totally 6；Left side brackets fixing bolt and right side bracket fixing bolt are hexagon socket head cap screw；Support locating rack
Fixed expansion nut is outer-hexagonal nut；
Left side brackets one end is connected by left side damping gasket, left side hand-tighten bolts on the left of water-proof speaker；Right side holder one end is logical
Cross right side damping gasket, right side hand-tighten bolts connection water-proof speaker right side；The left side brackets other end and support locating rack left end are logical
It crosses left side brackets fixing bolt with left side brackets spring shim to be connected, water-proof speaker, left side brackets spring is fixed from left side physics
Gasket prevents from causing bolt to slide because of vibration；The right side holder other end and support locating rack right end, are fixed by right side holder
Bolt is connected with right side stand spring gasket, fixes water-proof speaker from right side physics, right side stand spring gasket is prevented because of vibration
And bolt is caused to slide；2 bracket fixing bolts are spatially parallel to each other, to prevent left side brackets and right side holder because only
1 bolt and rotate, to cause water-proof speaker to be subjected to displacement；Support locating rack fixed by conplane 3 supports
Position frame fixed expansion screw squeezes into positive 3 drilling of support locating rack, to be fixed on sound column.
5. the round-the-clock linear array sound of level pressure as described in claim 1, which is characterized in that above-mentioned concatenation fastener packet
It includes：
Fastening plates are concatenated, for the iron plate that a cross section is U-shaped, two sides there are 2 groups of drillings up and down per side；2 support positioning
Frame bolt；2 support locating rack spring shims；Wherein,
2 support locating rack bolts, 2 support locating rack spring shims pass through 2 groups of drillings in concatenation fastening plates, for going here and there up and down
Support locating rack is connect, adjacent 2 water-proof speaker component strings are connected in the linear array sound of round-the-clock level pressure from structure；
It is to prevent from causing bolt to slide because of vibration to support locating rack spring shim main function.
6. a kind of linear array sound of round-the-clock level pressure, wherein the sound intensity display methods of passive sound intensity display module is：Passive sound
Strong display module includes division module, and division module executes following action：Voltage after being depressured to step-down transformer is adjusted,
To export stable and matched voltage, while outputing current to current limiter；
Passive sound intensity display module includes LED drive circuit, and LED drive circuit executes following action：It will be after current limiter reduces
Electric current export to the A color array of display of LED array of display, while detecting the size of current limiter output current, send out A coloured light
Brightness size is directly proportional to output current size, intuitively to show the power of water-proof loudspeaker sound：Then brightness is big greatly for electric current,
To show that sound is strong, the small then brightness of electric current is small, to show that sound is weak；
Passive sound intensity display module includes LED warning circuits, and LED warning circuits execute following action：Only exported in division module
Voltage just opens access when being more than or equal to threshold value, while the electric current after current limiter reduces being exported to the B colors of LED array of display
Light array of display makes it send out B coloured light, alarms to user, it is excessively high to report to the current sound intensity；
Passive sound intensity display module includes display figure astigmatism plate, and display figure astigmatism plate executes following action：LED is shown into battle array
It arranges the visible light sent out to break up, it appears that evenly and natural；
Passive sound intensity display module include display figure astigmatism plate, show figure astigmatism plate figure can with customized,
Such as trade mark, mark etc..
7. a kind of fault judgment method of the round-the-clock linear array sound of level pressure as described in claim 1 includes：
Detect that LED array of display shines, while water-proof loudspeaker is noiseless：Judge water-proof speaker component faults；
Detect that LED array of display does not shine, while water-proof loudspeaker sounding：It is judged as passive sound intensity display module failure；
Detect that LED array of display does not shine, while water-proof loudspeaker is noiseless：It is judged as step-down transformer failure or the passive sound intensity
Display module and water-proof speaker component simultaneous faults.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710577932.6A CN107172531B (en) | 2017-07-15 | 2017-07-15 | A kind of linear array sound of round-the-clock level pressure and its fault judgment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710577932.6A CN107172531B (en) | 2017-07-15 | 2017-07-15 | A kind of linear array sound of round-the-clock level pressure and its fault judgment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107172531A CN107172531A (en) | 2017-09-15 |
| CN107172531B true CN107172531B (en) | 2018-11-02 |
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ID=59817697
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710577932.6A Active CN107172531B (en) | 2017-07-15 | 2017-07-15 | A kind of linear array sound of round-the-clock level pressure and its fault judgment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113810834B (en) * | 2021-10-27 | 2023-05-12 | 安徽井利电子有限公司 | Adjustable loudspeaker with belt-type arrangement inside sound equipment and debugging method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7813516B1 (en) * | 2006-07-24 | 2010-10-12 | Graber Curtis E | System for cardioid sound field generation from dissimilar sources |
| CN201699951U (en) * | 2010-06-30 | 2011-01-05 | 王润辉 | Output indicator of sound box |
| CN206024074U (en) * | 2016-08-24 | 2017-03-15 | 广州爱新电器有限公司 | Combined type linear array sound box system |
-
2017
- 2017-07-15 CN CN201710577932.6A patent/CN107172531B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7813516B1 (en) * | 2006-07-24 | 2010-10-12 | Graber Curtis E | System for cardioid sound field generation from dissimilar sources |
| CN201699951U (en) * | 2010-06-30 | 2011-01-05 | 王润辉 | Output indicator of sound box |
| CN206024074U (en) * | 2016-08-24 | 2017-03-15 | 广州爱新电器有限公司 | Combined type linear array sound box system |
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| Publication number | Publication date |
|---|---|
| CN107172531A (en) | 2017-09-15 |
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