CN107979801A - Public address system - Google Patents

Public address system Download PDF

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Publication number
CN107979801A
CN107979801A CN201810036318.3A CN201810036318A CN107979801A CN 107979801 A CN107979801 A CN 107979801A CN 201810036318 A CN201810036318 A CN 201810036318A CN 107979801 A CN107979801 A CN 107979801A
Authority
CN
China
Prior art keywords
apex angle
loudspeaker
channel loudspeaker
public address
address system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810036318.3A
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Chinese (zh)
Inventor
孙志昊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Mode Culture Communication Co Ltd
Original Assignee
Beijing Mode Culture Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Mode Culture Communication Co Ltd filed Critical Beijing Mode Culture Communication Co Ltd
Priority to CN201810036318.3A priority Critical patent/CN107979801A/en
Publication of CN107979801A publication Critical patent/CN107979801A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic

Abstract

The present invention relates to a kind of public address system, 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 loudspeaker 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 public address system is used for during KTV boxes the left channel loudspeaker and right channel loudspeaker abreast back to the longer metope in the KTV boxes.

Description

Public address system
Technical field
The present invention relates to acoustic-electric technical field, more particularly to a kind of public address system.
Background technology
The single left channel loudspeaker of public address system generally use and single right channel loudspeaker in current KTV systems, As shown in Figure 1, left and right acoustic channels loudspeaker arrangement is in the side in KTV rooms, what this loudspeaker arrangement scheme was formed in KTV rooms 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 people sound source, using in The sound amplifier of customer faces in box main wall face both ends or both sides carries out public address, under such a pattern, according to acoustic image in acoustics The principle of positioning, makes sound knot picture be in main wall plane video display device position, in the hope of reaching the subjective feeling phase of audio and video Mutually unified purpose, and can meet the demand that amplifies of user in scene.
But the technical solution of above-mentioned left and right binary channels sound field preamble pattern and its mutation pattern has some following deficiency： 1st, it is more demanding to sweet spot, and scope is smaller, this optimum position be in using both sides sound amplifier as 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；2nd, sound Field distribution is uneven, and sound increases gradually decay with propagation distance, and hearer is in diverse location in box, and to experience volume poor Different larger, acoustic pressure is higher during nearly sound source possibly even causes impaired hearing, and acoustic pressure is smaller during remote sound source, and sound is dimly discernible thin； 3rd, 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 the sound system of higher is experienced, to meet that people require higher and higher telepresenc.
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 R channel position, in order to be engaged with some specific pictures 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 Cross to R channel, customer, which just has, immersively to be experienced；And the side of public address system using the present invention, inaccurately differentiation sound Tropism, simply distinguishes L channel and R channel in the space that amplifies, and realizes the experience effect of immersion.
The content of the invention
It is an object of the invention to provide a kind of public address system, most preferably to listen phoneme to concentrate in the region that solves to amplify, sound field The problem of skewness, telepresenc is very poor.
The public address system provided according to the present invention, the public address system include two left channel loudspeakers and two R channels Loudspeaker, the left channel loudspeaker and right channel loudspeaker are respectively arranged four apex angles in the rectangular area in the space that amplifies Place, and the loudspeaker 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 invention, the rectangle is square.
A kind of preferred implementing form of public address system according to the present invention, 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, on the left side in the upper left apex angle and bottom right apex angle Lower apex angle and upper right apex angle arrange the right channel loudspeaker.
A kind of preferred implementing form of public address system according to the present invention, the left channel loudspeaker of the upper left apex angle and institute The right channel loudspeaker for stating 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 arrange Face to face.
A kind of preferred implementing form of public address system according to the present invention, the left channel loudspeaker and right channel loudspeaker The top of the vertex of the rectangular area in the space that amplifies is hung on respectively.
A kind of preferred implementing form of public address system according to the present invention, the space that amplifies is KTV boxes.
A kind of preferred implementing form of public address system according to the present invention, the left channel loudspeaker and right channel loudspeaker Abreast back to the longer metope in the KTV boxes.
A kind of preferred implementing form of public address system according to the present invention, the left channel loudspeaker and right channel loudspeaker Sound pressure level it is consistent.
A kind of preferred implementing form of public address system according to the present invention, the common position measurement in the space that amplifies When, the stable state maximum sound pressure level difference of the sound of different loudspeakers is less than 2 decibels.
A kind of preferred implementing form of public address system according to the present invention, the common position measurement in the space that amplifies When, distinguish the L channel and R channel of sound.
The public address system of the present invention solves the problems, such as to amplify in the prior art in space, and sweet spot is less, due to Using multiple loudspeakers, preferable stereophonic effect can be experienced in diverse location；Solves diverse location sound pressure level in room The problem of having big difference, the sound pressure level of the loudspeaker in public address system of the invention is consistent, and region is amplified not even in described With position sound pressure level difference also very little；Due to using four loudspeakers, such arrangement, wherein each raising one's voice in the region that amplifies The real output of device can reduce, and can reduce the excessive of sound in room, while reduce noise pollution.
The public address system of the present invention is suitable for most of amplify space, including KTV rooms, the major part in KTV rooms Region can generate stereo sound field, form immersion music experience, enhance the recreational of KTV, improve the experience of customer.
Brief description of the drawings
Fig. 1 illustrates the arrangement figure of loudspeaker in the prior art；
Fig. 2 illustrates left and right binary channels sound field preamble pattern of the prior art and its scheme arrangement figure of mutation pattern；
Fig. 3 illustrates the arrangement figure of the public address system of the present invention.
Embodiment
The public address system of the present invention is explained below in conjunction with the accompanying drawings.
Fig. 3 illustrates the arrangement figure of the public address system of the present invention, as shown in figure 3, the public address system of the present invention includes Two left channel loudspeakers and two right channel loudspeakers, the left channel loudspeaker and right channel loudspeaker are respectively arranged in expansion Four vertex of the rectangular area in sound space, and the loudspeaker of the adjacent vertex of the rectangular area each other raise by L channel Sound device and right channel loudspeaker.
Dotted line delineation region is the layout area of loudspeaker in figure 3, can be rectangular area or square Region.
The space that amplifies of the present invention is the certain space surrounded by screen, can be whole room or box, Can be a certain layer that building interconnects, even whole building includes auditorium or hall, and the rectangular area It is the part in the space that amplifies, is typically the main activities region of personnel, public address system is arranged in the Regional Overall Planning, can Give people to provide optimal sound field environment, the rectangular area is the sweet spot in the space that amplifies, and can be distinguished L channel and R channel, realize 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 the optional position of the rectangular area Road, evenly, stereophonic effect is more preferable for sound-filed simulation.
In order to save space, facilitate the lifting of loudspeaker, can be by the left channel loudspeaker and right channel loudspeaker point The top of the vertex of the rectangular area in the space that amplifies is not hung on.
Preferably, the space that amplifies is KTV boxes.
When the public address system of the present invention is arranged in KTV boxes, the left channel loudspeaker is parallel with right channel loudspeaker Ground is back to the longer metope in the KTV boxes.
Public address system using the present invention, it is preferable that the sound pressure level of four loudspeakers is consistent.
Preferably, after the output power for adjusting loudspeaker as needed, when being tested in the rectangular area, different loudspeakers Between stable state maximum sound pressure level difference be less than 2 decibels, its test position often uses LisPos including at least four personnel so that It is clearly felt that tonequality is full when amplifying space audition, it is stronger rich in level, three-dimensional sense.
Preferably, after the output power for adjusting loudspeaker as needed, when being tested in the rectangular area, sound is distinguished L channel and R channel.
When the public address system of the present invention is applied to single KTV boxes, specifically comprise the following steps：
First, the main activities scope 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, four identical loudspeakers of performance indicator are respectively arranged four vertex in the rectangular area, such as Fruit loudspeaker starts numbering clockwise or counter-clockwise with wherein any one and is loudspeaker A, loudspeaker B, loudspeaker C, raises one's voice Device D, then loudspeaker A and loudspeaker B, loudspeaker D are adjacently positioned, diagonally arranged with loudspeaker C, it is preferable that loudspeaker A is with raising Sound device B arranges that loudspeaker C is arranged Face to face with loudspeaker D Face to face, and in loudspeaker 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 loudspeaker, wherein believing all the way Number L input loudspeakers A, loudspeaker C, another way signal R input loudspeakers B, loudspeaker D, at this time, in sound field any two it is adjacent Loudspeaker may be constructed stereosonic L channel and R channel.
Finally, above-mentioned arrangement is debugged, the output power of four loudspeakers is adjusted according to demand, Choose point position common no less than four in KTV boxes to measure using sound pressure meter so that the stable state maximum sound pressure level of loudspeaker Difference is less than 2 decibels, chooses point position common no less than four and carries out subjective assessment of acoustics, can clearly differentiate L channel and right sound Road, tonequality is full and strong rich in level, sound perspective in KTV boxes, immersion experience shock.
Public address system using the present invention, can solve diverse location sound pressure level in room in KTV rooms and differ The problem of big, the sound pressure level of the loudspeaker in public address system of the invention is consistent, the diverse location acoustic pressure in KTV rooms Level differs also very little；Due to using four loudspeakers, such arrangement, wherein the reality of each loudspeaker is defeated in the region that amplifies Going out power can reduce, and can reduce the excessive of sound in room, while reduce noise pollution.
Compared with prior art, it is less that public address system of the invention can also solve sweet spot in room Problem, stereo sound field can be generated by realizing most of region in room, formed immersion music experience, enhanced the joy of KTV Happy property, improves the experience of customer.
Describe the preferred embodiment of the present invention above, but the spirit and scope of the present invention be not limited to it is disclosed herein Particular content.Those skilled in the art can according to the present invention instruct and make more embodiments and application, these realities Apply mode and application would be within the spirit and scope of the present invention.The spirit and scope of the present invention are not limited by specific embodiment, And it is defined by the claims.

Claims (10)

  1. A kind of 1. public address system, it is characterised 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 loudspeaker of the adjacent vertex of the rectangular area left channel loudspeaker and right channel loudspeaker each other.
  2. 2. public address system according to claim 1, it is characterised in that the rectangle is square.
  3. 3. public address system according to claim 1, it is characterised in that the rectangular area includes upper left apex angle, lower-left is pushed up 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. 4. public address system according to claim 3, it is characterised 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. 5. public address system according to any one of claim 1 to 4, it is characterised 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. 6. public address system according to any one of claim 1 to 4, it is characterised in that the space that amplifies is KTV bags Railway carriage or compartment.
  7. 7. according to the public address system described in claim 6, it is characterised in that the left channel loudspeaker and right channel loudspeaker Abreast back to the longer metope in the KTV boxes.
  8. 8. public address system according to claim 1, it is characterised in that the left channel loudspeaker and right channel loudspeaker Sound pressure level is consistent.
  9. 9. public address system according to claim 1, it is characterised in that in the common position measurement in the space that amplifies, The stable state maximum sound pressure level difference of the sound of different loudspeakers is less than 2 decibels.
  10. 10. public address system according to claim 1, it is characterised in that in the common position measurement in the space that amplifies, Distinguish the L channel and R channel of sound.
CN201810036318.3A 2018-01-15 2018-01-15 Public address system Pending CN107979801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810036318.3A CN107979801A (en) 2018-01-15 2018-01-15 Public address system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810036318.3A CN107979801A (en) 2018-01-15 2018-01-15 Public address system

Publications (1)

Publication Number Publication Date
CN107979801A true CN107979801A (en) 2018-05-01

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CN201810036318.3A Pending CN107979801A (en) 2018-01-15 2018-01-15 Public address system

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710023A (en) * 1971-09-27 1973-01-09 Int Technical Dev Corp Sound reproducing system for a four speaker stereo utilizing signal expansion and signal delay
CN1230331A (en) * 1996-08-13 1999-09-29 L·G·芬斯特尔 Recording and play-back two-channel system for providing holophonic reproduction of sounds
CN1719949A (en) * 2004-07-08 2006-01-11 乐金电子（惠州）有限公司 Karaoke system with real effect
CN103079149A (en) * 2013-01-31 2013-05-01 朱毓淳 Method for restore field sound in highly true way by using two-channel sound source
US20130108057A1 (en) * 2011-10-28 2013-05-02 Yamaha Corporation Sound Processing Apparatus
KR20150004505A (en) * 2013-07-03 2015-01-13 주식회사 비전테크 Multi-voice signal playing devices
CN104506994A (en) * 2014-12-06 2015-04-08 宁波市镇海声势清扬音响科技有限公司 Vehicular audio loudspeaker of bus
CN106686498A (en) * 2015-11-10 2017-05-17 王卫平 Cinema seat multichannel stereophonic loudspeaker system
CN207665219U (en) * 2018-01-15 2018-07-27 北京麦颂文化传播有限公司 Public address system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710023A (en) * 1971-09-27 1973-01-09 Int Technical Dev Corp Sound reproducing system for a four speaker stereo utilizing signal expansion and signal delay
CN1230331A (en) * 1996-08-13 1999-09-29 L·G·芬斯特尔 Recording and play-back two-channel system for providing holophonic reproduction of sounds
CN1719949A (en) * 2004-07-08 2006-01-11 乐金电子（惠州）有限公司 Karaoke system with real effect
US20130108057A1 (en) * 2011-10-28 2013-05-02 Yamaha Corporation Sound Processing Apparatus
CN103079149A (en) * 2013-01-31 2013-05-01 朱毓淳 Method for restore field sound in highly true way by using two-channel sound source
KR20150004505A (en) * 2013-07-03 2015-01-13 주식회사 비전테크 Multi-voice signal playing devices
CN104506994A (en) * 2014-12-06 2015-04-08 宁波市镇海声势清扬音响科技有限公司 Vehicular audio loudspeaker of bus
CN106686498A (en) * 2015-11-10 2017-05-17 王卫平 Cinema seat multichannel stereophonic loudspeaker system
CN207665219U (en) * 2018-01-15 2018-07-27 北京麦颂文化传播有限公司 Public address system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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豆丁网: "ktv基本调音", Retrieved from the Internet <URL:https://www.docin.com/p-1495245138.html> *

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