CN207665219U - Public address system - Google Patents
Public address system Download PDFInfo
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- CN207665219U CN207665219U CN201820062066.7U CN201820062066U CN207665219U CN 207665219 U CN207665219 U CN 207665219U CN 201820062066 U CN201820062066 U CN 201820062066U CN 207665219 U CN207665219 U CN 207665219U
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- channel loudspeaker
- apex angle
- public address
- address system
- loudspeaker
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Abstract
The utility model is related to a kind of public address systems, the public address system includes two left channel loudspeakers and two right channel loudspeakers, the left channel loudspeaker and right channel loudspeaker are respectively arranged four vertex in the rectangular area in the space that amplifies, and the loud speaker of the adjacent vertex of the rectangular area left channel loudspeaker and right channel loudspeaker each other.The rectangular area includes upper left apex angle, lower-left apex angle, upper right apex angle, bottom right apex angle, and the left channel loudspeaker is arranged in the upper left apex angle and bottom right apex angle, and the right channel loudspeaker is arranged in the lower-left apex angle and upper right apex angle；The left channel loudspeaker and right channel loudspeaker are hung on the top of the vertex of the rectangular area in the space that amplifies respectively；The left channel loudspeaker and right channel loudspeaker are parallelly back to the longer metope in the KTV boxes when public address system is for KTV boxes.
Description
Technical field
The utility model is related to acoustic-electric technical fields, more particularly to a kind of public address system.
Background technology
The single left channel loudspeaker of public address system generally use in current KTV systems and single right channel loudspeaker,
As shown in Figure 1, left and right acoustic channels loudspeaker arrangement is in the side in the rooms KTV, what this loudspeaker arrangement scheme was formed in the rooms KTV
Stereophonic effect is poor, and sound-filed simulation is also uneven.
After the improvement of technical solution, according to the requirement of public address principle, using left and right binary channels sound field preamble pattern
And its mutation pattern, i.e. both sides add benefit sound, as shown in Fig. 2, be superimposed with stereo music source and monophonic voice source, using in
The sound amplifier at the main wall face both ends or both sides that customer faces in box carries out public address, under such pattern, according to acoustic image in acoustics
The principle of positioning makes sound knot picture be in main wall plane video and shows device location, in the hope of reaching the subjective feeling phase of audio and video
Mutually unified purpose, and the demand that amplifies of user in scene can be met.
But the technical solution of above-mentioned left and right binary channels sound field preamble pattern and its mutation pattern has the following insufficient：
1, more demanding to sweet spot, and range is smaller, this optimum position be in both sides sound amplifier be two base angles just
Triangular form corner position, hearer's left and right displacement can cause sound knot picture to fail, and displacement is excessive or even causes monophonic audition；2, sound
Field distribution is uneven, and sound increases gradually decaying with propagation distance, and it is poor that hearer is in the experienced volume of different location in box
Different larger, acoustic pressure is higher when nearly sound source possibly even causes impaired hearing, and acoustic pressure is smaller when remote sound source, and sound is dimly discernible thin；
3, chanteur position and sound knot image position oppose, and telepresenc is very poor.
Therefore, with the development of acoustic-electric technology, urgently occur in market a kind of sound-filed simulation uniformly, stereophonic effect it is higher
And higher sound system is experienced, higher and higher telepresenc is required to meet people.
The sound system of the public places of entertainment such as cinema equally distinguishes left channel loudspeaker and right channel loudspeaker, but wherein
L channel cannot be overturned with right channel position, in order to matched with certain specific animations to reach video effect, example
Such as, a bullet or adder tongue herb move to right side on the left of screen, and matched sound should also be as from L channel mistake
It crosses to right channel, customer, which just has, immersively to be experienced；And the public address system of the utility model is used, inaccurately distinguish sound
Directionality, L channel and right channel are only distinguished in the space that amplifies, realizes the experience effect of immersion.
Utility model content
The purpose of this utility model is to provide a kind of public address systems, most preferably phoneme to be listened to concentrate in the region that solves to amplify,
Sound-filed simulation is uneven, the very poor problem of telepresenc.
According to public address system provided by the utility model, the public address system includes two left channel loudspeakers and two right sides
Channel loudspeaker, the left channel loudspeaker and right channel loudspeaker are respectively arranged in four tops of the rectangular area in the space that amplifies
At angle, and the loud speaker of the adjacent vertex of the rectangular area left channel loudspeaker and right channel loudspeaker each other.
A kind of preferred implementing form of public address system according to the present utility model, the rectangle are regular quadrangle.
A kind of preferred implementing form of public address system according to the present utility model, the rectangular area include upper left apex angle,
Lower-left apex angle, upper right apex angle, bottom right apex angle arrange the left channel loudspeaker, in institute in the upper left apex angle and bottom right apex angle
It states lower-left apex angle and upper right apex angle arranges the right channel loudspeaker.
A kind of preferred implementing form of public address system according to the present utility model, the left channel loudspeaker of the upper left apex angle
It is arranged Face to face with the right channel loudspeaker of the upper right apex angle, right channel loudspeaker and the bottom right of the lower-left apex angle
The left channel loudspeaker of apex angle is arranged Face to face.
A kind of preferred implementing form of public address system according to the present utility model, the left channel loudspeaker and right channel are raised
Sound device is hung on the top of the vertex of the rectangular area in the space that amplifies respectively.
A kind of preferred implementing form of public address system according to the present utility model, the space that amplifies are KTV boxes.
A kind of preferred implementing form of public address system according to the present utility model, the left channel loudspeaker and right channel are raised
Sound device is parallelly back to the longer metope in the KTV boxes.
The public address system of the utility model solves the problems, such as to amplify in the prior art in space, and sweet spot is less,
Due to using multiple loud speakers, preferable stereophonic effect can be experienced in different location；Solves different location sound in room
It arbitrarily downgrades the problem of having big difference, the sound pressure level of the loud speaker in the public address system of the utility model is consistent, even if amplifying described
The different location sound pressure level in region differs also very little；Due in the region that amplifies use four loud speakers, such arrangement, wherein
The real output of each loud speaker can reduce, and can reduce the excessive of sound in room, while reducing noise pollution.
The public address system of the utility model is suitable for most of amplify space, including the rooms KTV, big in the rooms KTV
Subregion produces stereo sound field, forms immersion music experience, enhances the recreational of KTV, improve the body of customer
It tests.
Description of the drawings
Fig. 1 illustrates the arrangement figure of loud speaker in the prior art；
Fig. 2 illustrates left and right binary channels sound field preamble pattern in the prior art and its scheme arrangement figure of mutation pattern；
Fig. 3 illustrates the arrangement figure of the public address system of the utility model.
Specific implementation mode
The public address system of the utility model is explained in detail below in conjunction with the accompanying drawings.
Fig. 3 illustrates the arrangement figure of the public address system of the utility model, as shown in figure 3, the utility model amplifies
System includes two left channel loudspeakers and two right channel loudspeakers, and the left channel loudspeaker and right channel loudspeaker are distinguished
Four vertex of the rectangular area in the space that amplifies are arranged in, and the loud speaker of the adjacent vertex of the rectangular area is each other
Left channel loudspeaker and right channel loudspeaker.
Dotted line delineation region is the layout area of loud speaker in figure 3, can be rectangular area, can also be regular quadrangle
Region.
The space that amplifies of the utility model is the certain space surrounded by screen, can be entire room or packet
Compartment can also be a certain layer that building interconnects, and even whole building includes auditorium or hall, and the rectangle
Region is the part in the space that amplifies, typically the main activities region of personnel, and public address system is arranged in the Regional Overall Planning,
Best sound field environment can be provided to people, the rectangular area is the sweet spot in the space that amplifies, can
L channel and right channel are distinguished, realizes the experience effect of immersion.
As shown in figure 3, the rectangular area includes upper left apex angle, lower-left apex angle, upper right apex angle, bottom right apex angle, it is preferable that
The left channel loudspeaker is arranged in the upper left apex angle and bottom right apex angle, described in the lower-left apex angle and upper right apex angle arrangement
Right channel loudspeaker.
Preferably, the right channel loudspeaker of the left channel loudspeaker of the upper left apex angle and the upper right apex angle is Face to face
Arrangement, the right channel loudspeaker of the lower-left apex angle and the left channel loudspeaker of the bottom right apex angle are arranged Face to face.
The advantages of this arrangement, is, L channel and right sound can be distinguished in any position of the rectangular area
Road, evenly, stereophonic effect is more preferable for sound-filed simulation.
In order to save space, facilitates the lifting of loud speaker, the left channel loudspeaker and right channel loudspeaker can be divided
It is not hung on the top of the vertex of the rectangular area in the space that amplifies.
Preferably, the space that amplifies is KTV boxes.
When the public address system of the utility model is arranged in KTV boxes, the left channel loudspeaker and right channel loudspeaker
Parallelly back to the longer metope in the KTV boxes.
Using the public address system of the utility model, it is preferable that the sound pressure level of four loud speakers is consistent.
Preferably, after the output power for adjusting loud speaker as needed, when the rectangular area is tested, different loud speakers
Between stable state maximum sound pressure level difference be less than 2 decibels, test position include at least four personnel often use LisPos so that
It is clearly felt that sound quality is full when amplifying space audition, rich in level, three-dimensional sense is stronger.
Preferably, after the output power for adjusting loud speaker as needed, when the rectangular area is tested, sound is distinguished
L channel and right channel.
When the public address system of the utility model is applied to single KTV boxes, specifically include the following steps：
First, the main activities range of amusement personnel is planned in KTV boxes, and is drawn a circle to approve with rectangle, preferably with just
Quadrangle is drawn a circle to approve.
Secondly, identical four loud speakers of performance indicator are respectively arranged four vertex in the rectangular area, such as
Fruit loud speaker starts number clockwise or counter-clockwise with wherein any one and is loud speaker A, loud speaker B, loud speaker C, raises one's voice
Device D, it is diagonally arranged with loud speaker C then loud speaker A and loud speaker B, loud speaker D are adjacently positioned, it is preferable that loud speaker A with raise
Sound device B arranges that loud speaker C is arranged Face to face with loud speaker D Face to face, and in loud speaker and the KTV boxes compared with
Long metope parallel arrangement.
Again, the stereo double-channel signal being disposed in sound processing system is accessed into loud speaker, wherein believing all the way
Number L input loudspeakers A, loud speaker C, another way signal R input loudspeakers B, loud speaker D, at this point, in sound field arbitrary two it is adjacent
Loud speaker may be constructed stereosonic L channel and right channel.
Finally, above-mentioned arrangement is debugged, the output power of four loud speakers is adjusted according to demand,
It chooses no less than four common points in KTV boxes to measure using sound pressure meter so that the stable state maximum sound pressure level of loud speaker
Difference is less than 2 decibels, chooses no less than four common points and carries out subjective assessment of acoustics, can clearly differentiate L channel and right sound
Road, in KTV boxes sound quality it is full and rich in level, sound perspective is strong, immersion experience shock.
Using the public address system of the utility model, can solve different location sound pressure level phase in room in the rooms KTV
The sound pressure level of the excessive problem of difference, the loud speaker in the public address system of the utility model is consistent, even if the difference in the rooms KTV
Position sound pressure level differs also very little；Due to using four loud speakers, such arrangement, wherein each loud speaker in the region that amplifies
Real output can reduce, the excessive of sound in room can be reduced, while reducing noise pollution.
Compared with prior art, the public address system of the utility model can also solve in room sweet spot compared with
Few problem realizes most of region in room and produces stereo sound field, forms immersion music experience, enhance KTV
It is recreational, improve the experience of customer.
The preferred embodiment of the utility model is described above, but the spirit and scope of the utility model are not limited to here
Disclosed particular content.Those skilled in the art can it is according to the present utility model introduction and make more embodiments and
Using these embodiments and application are all in the spirit and scope of the utility model.The spirit and scope of the utility model are not
It is limited, and is defined by the claims by specific embodiment.
Claims (7)
1. a kind of public address system, which is characterized in that
The public address system includes two left channel loudspeakers and two right channel loudspeakers,
The left channel loudspeaker and right channel loudspeaker are respectively arranged four vertex in the rectangular area in the space that amplifies, and
And the loud speaker of the adjacent vertex of the rectangular area left channel loudspeaker and right channel loudspeaker each other.
2. public address system according to claim 1, which is characterized in that the rectangle is regular quadrangle.
3. public address system according to claim 1, which is characterized in that the rectangular area includes upper left apex angle, lower-left top
Angle, upper right apex angle, bottom right apex angle arrange the left channel loudspeaker, in the lower-left in the upper left apex angle and bottom right apex angle
Apex angle and upper right apex angle arrange the right channel loudspeaker.
4. public address system according to claim 3, which is characterized in that the left channel loudspeaker of the upper left apex angle with it is described
The right channel loudspeaker of upper right apex angle arranges Face to face, the right channel loudspeaker of the lower-left apex angle and the bottom right apex angle
Left channel loudspeaker is arranged Face to face.
5. public address system according to any one of claim 1 to 4, which is characterized in that the left channel loudspeaker and the right side
Channel loudspeaker is hung on the top of the vertex of the rectangular area in the space that amplifies respectively.
6. public address system according to any one of claim 1 to 4, which is characterized in that the space that amplifies is KTV packets
Compartment.
7. according to the public address system described in claim 6, which is characterized in that the left channel loudspeaker and right channel loudspeaker
Parallelly back to the longer metope in the KTV boxes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820062066.7U CN207665219U (en) | 2018-01-15 | 2018-01-15 | Public address system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820062066.7U CN207665219U (en) | 2018-01-15 | 2018-01-15 | Public address system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207665219U true CN207665219U (en) | 2018-07-27 |
Family
ID=62945209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820062066.7U Active CN207665219U (en) | 2018-01-15 | 2018-01-15 | Public address system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207665219U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979801A (en) * | 2018-01-15 | 2018-05-01 | 北京麦颂文化传播有限公司 | Public address system |
-
2018
- 2018-01-15 CN CN201820062066.7U patent/CN207665219U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979801A (en) * | 2018-01-15 | 2018-05-01 | 北京麦颂文化传播有限公司 | Public address system |
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