CN204791598U - Classroom teaching intelligence sound amplification system,sound reinforcing system - Google Patents
Classroom teaching intelligence sound amplification system,sound reinforcing system Download PDFInfo
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- CN204791598U CN204791598U CN201520442086.3U CN201520442086U CN204791598U CN 204791598 U CN204791598 U CN 204791598U CN 201520442086 U CN201520442086 U CN 201520442086U CN 204791598 U CN204791598 U CN 204791598U
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Abstract
The utility model discloses a classroom teaching intelligence sound amplification system, sound reinforcing system, include: locate the left back public address audio amplifier and the right back public address audio amplifier of putting put of classroom one end, locate the classroom other end and put the audio amplifier in, the microphone subassembly is connected with classroom teaching audio frequency treater between microphone subassembly and the audio amplifier, wherein, the left back public address audio amplifier and right back put is put the public address audio amplifier and is hung respectively in classroom two corners of the left and right sides at the back, and the audio amplifier face incline down, and towards the student, wherein, the left back audio amplifier of putting the public address audio amplifier faces the right front desk, and the right back audio amplifier of putting the public address audio amplifier faces left front face desk, and the public address audio amplifier from the distance of microphone above 5 meters, in put the audio amplifier and install in the middle of blackboard top is positive, it is not vocal to put the audio amplifier in during the public address, the microphone unit mount is preceding positive middle at the podium, and along half meter position behind the podium, and the height that the microphone subassembly hung is in position 2.5-3 meters overhead.
Description
Technical field
The utility model relates to a kind of classroom instruction intelligence sound reinforcement system.
Background technology
According to the introduction of " educational research " magazine; in teacher, more than 70% suffers from laryngitis and vocal cords disease to some extent; more taller than the vocal cords disease Proportion of patients of singer; in order to the throat of available protecting teacher; amplify and to be absolutely necessary in teaching process; it is hand-held wire microphone that traditional teaching amplifies, and uses wireless microphone or wears the modes such as small-sized amplifier, the weakness that these traditional modes of amplifying have it fatal:
1. hand-held wire microphone has seriously fettered both hands and the scope of activities of teacher;
2. use wireless microphone easily to be disturbed by wireless device, easily produce and utter long and high-pitched sounds, increase teacher's burden, need charging or change battery also to increase handling cost.
3. wear small-sized amplifier, its matter is poor, particularly language course use apis florea easily to cause pronunciation nonstandard, in addition, sound field is seriously uneven: teacher and the volume received from the student close to teacher very large, the volume received from the student away from teacher is little, even can not hear clearly, the volume that teacher receives is maximum always, and Long-Time Service can damage teacher's sense of hearing; In addition, it is worn increases teachers' instruction burden, and needs charging or change battery to increase managerial burden.
Utility model content
Goal of the invention of the present utility model is to provide a kind of classroom instruction intelligence sound reinforcement system, and it is mainly used in the shortcoming of the tutoring system poor effect overcome on existing voice course.
It is as follows that the utility model solves the problems of the technologies described above taked technical scheme:
A kind of classroom instruction intelligence sound reinforcement system, comprising: left back the putting being located at one end, classroom amplifies audio amplifier and right backly put the audio amplifier that amplifies, and is located at the center-channel speaker of the classroom other end, microphone assembly, is connected with classroom instruction audio process between microphone assembly and audio amplifier, wherein, described left back amplify audio amplifier and the right back audio amplifier that amplifies of putting put is suspended on corner, two, left and right below, classroom respectively, audio amplifier face tilt down, Student oriented, wherein, the left back audio amplifier putting the audio amplifier that amplifies faces right front desk, the right back audio amplifier putting the audio amplifier that amplifies faces left front desk, and the distance of audio amplifier from microphone that amplify is more than 5 meters, described center-channel speaker is arranged on middle above blackboard, center-channel speaker not sounding during public address, described microphone assembly is arranged on middle before dais, from dais back edge half meter of position, and the height that hangs of microphone assembly is in the overhead position of 2.5 ~ 3 meters.
Further, in described classroom instruction audio process, at least comprise microphone amplifying unit, wherein, described microphone assembly is connected to described microphone amplifying unit, microphone amplifier module is connected to again analog-digital conversion a/d unit, this analog-digital conversion a/d unit is connected to again automatic gain compensation AGC unit, described automatic gain compensation AGC unit is connected to again neighbourhood noise and eliminates unit, this neighbourhood noise is eliminated unit and is connected to again an automatic feedback suppression unit, this automatic feedback suppresses unit to be connected to power amplification unit, this power amplification unit connects again described left back putting respectively and amplifies audio amplifier and right backly put the audio amplifier that amplifies, in addition, be also provided with pre-amplifier unit, it connects audio input signal, and the audio input signal after amplifying is connected to another power amplification unit, and this power amplification unit is connected to again described center-channel speaker.
Further, be also provided with downmixing unit, and this downmixing unit is connected respectively to described pre-amplifier unit and described neighbourhood noise eliminates unit, and finally externally exports recorded audio signals.
After the utility model takes such scheme, be applicable to classroom, meeting-place, can ultimate attainment audio quality provided for user and use flexible convenience, reach public address effect that is perfect, high-quality whereby, people can freely make a speech or give lessons, without the need to standing the constraint of any equipment again and pining down.
Other features and advantages of the utility model will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the utility model.The purpose of this utility model and other advantages realize by structure specifically noted in write instructions, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in detail, to make above-mentioned advantage of the present utility model definitely.
Fig. 1 is the circuit diagram of the utility model classroom instruction intelligence sound reinforcement system;
Fig. 2 be the utility model classroom instruction intelligence sound reinforcement system schematic diagram is set.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in detail.
As shown in Figure 2, the utility model classroom instruction intelligence sound reinforcement system, be made up of following three parts, 1) classroom instruction audio process: processor is integrated with power amplifier feedback inhibition, noise is eliminated, the functions such as Reverberation Rejection 2) high-fidelity amplifies audio amplifier: at least comprise two, be hung in the right and left in classroom, according to the size in classroom, can hang a pair or two pairs of center-channel speakers: hang over above blackboard, follow the rearmounted audio amplifier that amplifies to use together when playing courseware and can ensure that whole classroom sound field is even, say class hour center-channel speaker not sounding, 3) professional directed pickup microphone.
Wherein, in the utility model, the installation principle of audio amplifier is that microphone direction is not aimed in the amplify audio amplifier face of audio amplifier, and the audio amplifier that amplifies as far as possible from the distance of microphone more than 5 meters, two audio amplifiers that amplify are suspended on corner, two, left and right below, classroom, audio amplifier face tilt down, Student oriented, wherein, left voice box faces right front desk. and right voice box faces left front desk.
Center-channel speaker is arranged on middle above blackboard, mid-not sounding during public address, and microphone is arranged on middle above, dais 105, and from dais 105 back edge half meter of position, the height that microphone hangs can in the overhead position of 2.5 ~ 3 meters.
Specifically, a kind of classroom instruction intelligence sound reinforcement system, comprising: left back the putting being located at one end, classroom amplifies audio amplifier 101 and right backly put the audio amplifier 102 that amplifies, and is located at the center-channel speaker 103 of the classroom other end, microphone assembly 104, is connected with classroom instruction audio process between microphone assembly and audio amplifier, wherein, described left back amplify audio amplifier and the right back audio amplifier that amplifies of putting put is suspended on corner, two, left and right below, classroom respectively, audio amplifier face tilt down, Student oriented, wherein, the left back audio amplifier putting the audio amplifier that amplifies faces right front desk, the right back audio amplifier putting the audio amplifier that amplifies faces left front desk, and the distance of audio amplifier from microphone that amplify is more than 5 meters, described center-channel speaker is arranged on middle above blackboard, center-channel speaker not sounding during public address, described microphone assembly is arranged on middle above, dais 105, from dais 105 back edge half meter of position, and the height that hangs of microphone assembly is in the overhead position of 2.5 ~ 3 meters.
On physical circuit, as Fig. 1, this microphone assembly is connected to classroom instruction audio process, this classroom instruction audio process at least comprises: microphone amplifying unit, microphone amplifier module is connected to again analog-digital conversion a/d unit, this analog-digital conversion a/d unit is connected to again automatic gain compensation AGC unit, wherein, this automatic gain compensation AGC unit is connected to again neighbourhood noise and eliminates unit, it has undistorted dynamic noise and eliminates function, can undistorted ground filtering out background and system power noise, thus improve signal to noise ratio (S/N ratio) and improve tonequality, in addition, this neighbourhood noise is eliminated unit and is connected to again an automatic feedback suppression unit, it has self-adaptation Whole frequency band feedback inhibition function, owing to have employed and traditional reaction suppressor diverse self-adaptation room feedback forecasting elimination algorithm, self-excitation howling can be eliminated undistortedly, and without any need for situ configuration.In addition, this automatic feedback suppresses unit to be connected to power amplification unit, and this power amplification unit connects again described left back putting respectively and amplifies audio amplifier and right backly put the audio amplifier that amplifies; In addition, be also provided with pre-amplifier unit, it connects audio input signal, and the audio input signal after amplifying is connected to another power amplification unit, and this power amplification unit is connected to again described center-channel speaker.
Further, be also provided with downmixing unit, and this downmixing unit is connected respectively to described pre-amplifier unit and described neighbourhood noise eliminates unit, and finally externally exports recorded audio signals.
More particularly, the utility model classroom instruction intelligence sound reinforcement system is the intelligent sound reinforcement system of industry first item sound transmission gain up to 15dB, and classroom instruction intelligence sound reinforcement system adopts double-core specialized high-speed floating-point signal processor and leading intelligent audio mixing, noise elimination, acoustic feedback to suppress scheduling algorithm.
It can realize large-scale voice pickup, and effectively can prevent again the generation of the phenomenon of uttering long and high-pitched sounds that external noise disturbs and sound feedback causes, perfection presents the pickup effect of high definition, is extremely applicable to classroom, meeting-place etc. simultaneously.
Further, due to the design of above audio amplifier, high-fidelity amplifying effect true to nature: audience feel be exactly talker in loud speech, almost imperceptible sound sends from audio amplifier, and by above design, it has remote pickup effect, user walks about arbitrarily in classroom and gives lessons, classroom instruction intelligence sound reinforcement system can present the audio frequency effect of perfect high-quality and enough public address volumes for you, and, by the accurate Calculation to audio amplifier putting position, the volume of any position in classroom is consistent, simultaneously, it can regulate and spectral equalization control by automatic volume: can automatically identify voice signal and automatically adjust output level and frequency spectrum according to teacher's volume, no matter distance microphone is far and near to make teacher, student easily can catch its every a word.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although be described in detail the utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a classroom instruction intelligence sound reinforcement system, is characterized in that, comprising: left back the putting being located at one end, classroom amplifies audio amplifier and right backly put the audio amplifier that amplifies, and is located at the center-channel speaker of the classroom other end; Microphone assembly, is connected with classroom instruction audio process between microphone assembly and audio amplifier; Wherein, described left back amplify audio amplifier and the right back audio amplifier that amplifies of putting put is suspended on corner, two, left and right below, classroom respectively, audio amplifier face tilt down, Student oriented, wherein, the left back audio amplifier putting the audio amplifier that amplifies faces right front desk, the right back audio amplifier putting the audio amplifier that amplifies faces left front desk, and the distance of audio amplifier from microphone that amplify is more than 5 meters, described center-channel speaker is arranged on middle above blackboard, described microphone assembly is arranged on middle before dais, and from dais back edge half meter of position, and the height that hangs of microphone assembly is in the overhead position of 2.5 ~ 3 meters.
2. a kind of classroom instruction intelligence sound reinforcement system according to claim 1, it is characterized in that, in described classroom instruction audio process, at least comprise microphone amplifying unit, wherein, described microphone assembly is connected to described microphone amplifying unit, microphone amplifier module is connected to again analog-digital conversion a/d unit, this analog-digital conversion a/d unit is connected to again automatic gain compensation AGC unit, described automatic gain compensation AGC unit is connected to again neighbourhood noise and eliminates unit, this neighbourhood noise is eliminated unit and is connected to again an automatic feedback suppression unit, this automatic feedback suppresses unit to be connected to power amplification unit, this power amplification unit connects again described left back putting respectively and amplifies audio amplifier and right backly put the audio amplifier that amplifies, in addition, be also provided with pre-amplifier unit, it connects audio input signal, and the audio input signal after amplifying is connected to another power amplification unit, and this power amplification unit is connected to again described center-channel speaker.
3. a kind of classroom instruction intelligence sound reinforcement system according to claim 2, it is characterized in that, be also provided with downmixing unit, and this downmixing unit is connected respectively to described pre-amplifier unit and described neighbourhood noise eliminates unit, and finally externally export recorded audio signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520442086.3U CN204791598U (en) | 2015-06-25 | 2015-06-25 | Classroom teaching intelligence sound amplification system,sound reinforcing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520442086.3U CN204791598U (en) | 2015-06-25 | 2015-06-25 | Classroom teaching intelligence sound amplification system,sound reinforcing system |
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| CN204791598U true CN204791598U (en) | 2015-11-18 |
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| CN201520442086.3U Active CN204791598U (en) | 2015-06-25 | 2015-06-25 | Classroom teaching intelligence sound amplification system,sound reinforcing system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653038A (en) * | 2016-09-09 | 2017-05-10 | 深圳来邦科技有限公司 | Sound amplifying system |
| CN108777834A (en) * | 2018-06-21 | 2018-11-09 | 深圳市雷森贝尔听力技术有限公司 | A kind of collective is excellent to listen gain system and collective is excellent listens implementation method |
| CN109947386A (en) * | 2019-03-22 | 2019-06-28 | 深圳市智杰芯科技有限公司 | Intelligent-induction formula classroom perseverance system for electrical teaching |
-
2015
- 2015-06-25 CN CN201520442086.3U patent/CN204791598U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653038A (en) * | 2016-09-09 | 2017-05-10 | 深圳来邦科技有限公司 | Sound amplifying system |
| CN108777834A (en) * | 2018-06-21 | 2018-11-09 | 深圳市雷森贝尔听力技术有限公司 | A kind of collective is excellent to listen gain system and collective is excellent listens implementation method |
| CN109947386A (en) * | 2019-03-22 | 2019-06-28 | 深圳市智杰芯科技有限公司 | Intelligent-induction formula classroom perseverance system for electrical teaching |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Xin Inventor before: Jiang Cifu |
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| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161025 Address after: 361000, Zhong Ling 68, Huli District, Fujian, Xiamen Patentee after: As the Xiamen science and Technology Co. Address before: The Lake District of Xiamen City, Fujian province 361000 with second layers of A District No. 50 Yi Lu Patentee before: XIAMEN WANGJIAN TECHNOLOGY CO., LTD. |