CN108322865A - A kind of teaching private classroom speaker unit and application method - Google Patents
A kind of teaching private classroom speaker unit and application method Download PDFInfo
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- CN108322865A CN108322865A CN201711462119.0A CN201711462119A CN108322865A CN 108322865 A CN108322865 A CN 108322865A CN 201711462119 A CN201711462119 A CN 201711462119A CN 108322865 A CN108322865 A CN 108322865A
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a kind of teaching private classroom speaker unit and application methods, including sound pickup device, audio frequency processing system and loudspeaker array, sound pickup device is electrically connected with audio frequency processing system, sound pickup device is mounted on the wall at the top of dais, audio frequency processing system is electrically connected with loudspeaker array, audio frequency processing system is mounted in Rich media cabinet, and loudspeaker array is mounted on the wall around region of listening to the teacher；Audio frequency processing system includes shift frequency module, filter module and signal amplification module, shift frequency module is electrically connected with filter module, shift frequency module changes the frequency of collected voice signal, filter module is electrically connected with signal amplification module, filter module filters out the noise element of collected voice signal, signal amplification module carries out power amplification to collected voice signal, and the present invention has the characteristics that clear sound, sound field are uniform, flexibility is strong.
Description
Technical field
The present invention relates to loud speaker field, specially a kind of teaching private classroom speaker unit and application method.
Background technology
Support energetically with country to educational undertaking, educational institution now have carried out rich and varied curricula,
These courses are often carried out in a manner of personally instructing, and the throat of teacher is easy to come to harm in teaching, has uncomfortable phenomenon, is
The better transmission content of courses do not influence our students and normally listens to the teacher, will teaching of use loudspeaker improve the quality of teaching,
It can be also effectively protected silvery voice simultaneously, be on the one hand convenient for management, student is on the other hand helped to practice hearing.
Teaching loudspeaker is primarily used for the megaphone of teachers' instruction.It is divided into two major classes at present, one kind is waist-mounted type, shoulder extension
Formula teaching loudspeaker, another kind of is wireless type teaching loudspeaker.Waist-mounted type, shoulder mounted type loudspeaker power in 8W or so, frequency
Within 100 meters, tone color sound quality requires high range.Wireless microphone power is by height farther out in 35W to 100W, transmission range
Frequency radio wave transmission is gone out, and receiving terminal pushes speaker operation after receiving demodulation amplification.Both contribute to be mainly used for
The transmission teaching loudspeakers of language message also act as meeting room and amplify, or tour guide or hearing other than it can use teaching
The capable ancillary equipment of problematic people.
But existing teaching loudspeaker has the following defects：
(1) teaching loudspeaker in the prior art is needed to wear relevant equipment and could be amplified, and gives actual teaching
Process brings certain trouble, and the wave volume after amplifying is not high, and audio distortions are more serious；
(2) teaching loudspeaker in the prior art is suspended on by a self-contained loud speaker or two at the top of dais
Loud speaker amplify, teach indoor sound field uneven, student's perceived sounds of front is too big, subsequent student's perceived sounds
It is too small, discomfort not only is brought to student, while having an effect on the efficiency of listening to lecture of student.
Invention content
In order to overcome the shortcomings of prior art, a kind of teaching private classroom speaker unit of present invention offer and use
Method, the present invention have the characteristics that clear sound, sound field are uniform, flexibility is strong, can effectively solve the problem that asking for background technology proposition
Topic.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of teaching private classroom speaker unit, including sound pickup device, audio frequency processing system and loudspeaker array,
The sound pickup device is electrically connected with audio frequency processing system, and the sound pickup device is mounted on the wall at the top of dais,
The audio frequency processing system is electrically connected with loudspeaker array, and the audio frequency processing system is mounted in Rich media cabinet, described
Loudspeaker array is mounted on the wall around region of listening to the teacher；
The audio frequency processing system includes shift frequency module, filter module and signal amplification module, the shift frequency module and filter
Wave module is electrically connected, and the shift frequency module changes the frequency of collected voice signal, and the filter module amplifies mould with signal
Block is electrically connected, and the filter module filters out the noise element of collected voice signal, and the signal amplification module is to collecting
Voice signal carry out power amplification.
Further, the sound pickup device includes microphone, audio amplification block and analog-to-digital conversion module, the wheat
Gram wind is electrically connected with audio amplification block.The audio amplification block is electrically connected with analog-to-digital conversion module.
Further, the loudspeaker array includes multiple loud speakers, and the loud speaker is mounted on around region of listening to the teacher
On wall, and apart from ground 2-2.5m.
Further, a kind of application method of teaching private classroom speaker unit, includes the following steps：
Step 100, sound pickup device are acquired the voice signal of teachers' instruction content；
Step 200, audio frequency processing system handle the collected sound of sound pickup device, and will treated sound
Sound signal passes to loudspeaker array；
Treated that audio electrical signal is converted to mechanical oscillation by audio frequency processing system for step 300, loudspeaker array, sends out
Sound.
Further, in the step 100, the step of sound pickup device collected sound signal, is as follows：
Step 101, microphone are acquired the voice signal of teachers' instruction content, when teachers' instruction the vibration of sound pass
Onto the vibrating diaphragm of microphone, pushes the magnet of the inside to form the electric current of variation, convert voice signal to analog electrical signal；
Step 102, audio amplification block carry out power amplification to the collected analog electrical signal of microphone, by faint mould
Quasi- electric signal is converted into the analog electrical signal of accessible higher magnitude；
Amplified analog electrical signal is converted to digital electric signal by step 103, analog-to-digital conversion module, is the sound in later stage
Signal processing is prepared.
Further, in the step 200, sound processing system is as follows to the sound processing method of acquisition：
Step 201, shift frequency module change the frequency of analog-to-digital conversion module treated digital electric signal, and it is anti-to destroy generation sound
The condition of feedback, to inhibit acoustic feedback；
Treated that digital electric signal is filtered to shift frequency module for step 202, filter module, will be in digital electric signal
Noise element filters out, and retains the useful component in digital electric signal；
Step 203, signal amplification module carry out power amplification to the useful component in digital electric signal, after power amplification
Digital electric signal sends out larger voice signal through loudspeaker array, and completion amplifies to teachers' instruction content.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) audio frequency processing system of the invention carries out frequency transformation to collected voice signal, reduces voice signal
The distortion factor, filtering operation filtered out the noise element in voice signal, signal amplification so that the sound that loud speaker is sent out is more
Add loud and clear, has the characteristics that low distortion, high loudness；
(2) sound pickup device and loudspeaker array of the invention can acquire the sound letter of teachers' instruction multi-facetedly
Number and send out clear loud sound, the indoor student of religion can not only be allowed clearly to hear the lecture contents of teacher, while
Even sound field also ensures the comfort that student listens to the teacher.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the work flow diagram of the present invention.
Figure label：
1- sound pickup devices；2- audio frequency processing systems；3- loudspeaker arrays；4- shift frequency modules；5- filter modules；6- believes
Number amplification module；7- microphones；8- audio amplification blocks；9- analog-to-digital conversion modules；10- loud speakers.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As depicted in figs. 1 and 2, the present invention provides a kind of teaching private classroom speaker units, including voice pickup to fill
1, audio frequency processing system 2 and loudspeaker array 3 are set, the sound pickup device 1 is electrically connected with audio frequency processing system 2, the sound
Sound pick device 1 is mounted on the wall at the top of dais, and the audio frequency processing system 2 is electrically connected with loudspeaker array 3, the sound
Frequency processing system 2 is mounted in Rich media cabinet, and the loudspeaker array 3 is mounted on the wall around region of listening to the teacher.
In present embodiment, sound pickup device 1 is acquired the voice signal of teachers' instruction content, and will collect
Voice signal pass to audio frequency processing system 2, audio frequency processing system 2 changes collected voice signal into line frequency, makes an uproar
Sound is filtered out to be amplified with signal, and noise element is few in treated signal, and power is big, finally by loudspeaker array 3 send out it is clear,
Resonant voice.
The sound pickup device 1 includes microphone 7, audio amplification block 8 and analog-to-digital conversion module 9, the microphone 7
It is electrically connected with audio amplification block 8.The audio amplification block 8 is electrically connected with analog-to-digital conversion module 9.
The audio frequency processing system 2 includes shift frequency module 4, filter module 5 and signal amplification module 6, the shift frequency module 4
It is electrically connected with filter module 5, the shift frequency module 4 changes the frequency of collected voice signal, the filter module 5 and signal
Amplification module 6 is electrically connected, and the filter module 5 filters out the noise element of collected voice signal, the signal amplification module 6
Power amplification is carried out to collected voice signal.
In present embodiment, shift frequency module 4 can change the frequency of electric signal, destroy the condition for generating acoustic feedback, to
Inhibit acoustic feedback；Public address amount of gain can not only be improved, moreover it is possible to improve frequency characteristic, correct and adjust by frequecy characteristic, can make
Frequency characteristic is uniform, to reduce frequency distortion, reduces the distortion factor, filter module 5 can be to the noise element in acquisition signal
It is filtered out so that the sound that loudspeaker array is sent out is more clear, and is closer to the primary sound of teachers' instruction, and signal amplifies mould
Block 6 carries out power amplification to filtered electric signal, and drive the speaker array sends out resonant voice.
The loudspeaker array 3 includes multiple loud speakers 10, and the loud speaker 10 is mounted on the wall around region of listening to the teacher
On, and apart from ground 2-2.5m.
In present embodiment, multiple loud speakers 10 are mounted on the wall around region of listening to the teacher, and religion can not only be allowed indoor
Student clearly hears the teaching of teacher, while teaching room sound field uniform, will not give and bring uncomfortable feeling to student, traditional
Twin loudspeaker is different in the sound field of classroom everywhere, affects listening to the teacher for student.
The application method of teaching private classroom speaker unit, includes the following steps：
The first step：Sound pickup device 1 is acquired the voice signal of teachers' instruction content, specially：
Step 101, microphone 7 are acquired the voice signal of teachers' instruction content, the vibration of sound when teachers' instruction
It passes on the vibrating diaphragm of microphone, pushes the magnet of the inside to form the electric current of variation, convert voice signal to analog electrical signal；
Step 102, audio amplification block 8 carry out power amplification to 7 collected analog electrical signal of microphone, will be faint
Analog electrical signal is converted into the analog electrical signal of accessible higher magnitude；
Amplified analog electrical signal is converted to digital electric signal by step 103, analog-to-digital conversion module 9, is the sound in later stage
Sound signal processing is prepared.
Second step：Audio frequency processing system 2 handles 1 collected sound of sound pickup device, and by treated
Voice signal passes to loudspeaker array 3, specially：
Step 201, shift frequency module 4 change the frequency of treated the digital electric signal of analog-to-digital conversion module 9, destroy generation sound
The condition of feedback, to inhibit acoustic feedback；
Treated that digital electric signal is filtered to shift frequency module 4 for step 202, filter module 5, will be in digital electric signal
Noise element filter out, retain digital electric signal in useful component；
Step 203, signal amplification module 6 carry out power amplification to the useful component in digital electric signal, after power amplification
Digital electric signal send out larger voice signal through loudspeaker array, completion amplifies to teachers' instruction content.
Third walks：Treated that audio electrical signal is converted to mechanical oscillation by audio frequency processing system 2 for loudspeaker array 3, hair
Go out clear, resonant voice.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (6)
1. a kind of teaching private classroom speaker unit, including sound pickup device (1), audio frequency processing system (2) and loud speaker
Array (3), it is characterised in that：The sound pickup device (1) is electrically connected with audio frequency processing system (2), the voice pickup dress
(1) is set on the wall at the top of dais, the audio frequency processing system (2) is electrically connected with loudspeaker array (3), the audio
Processing system (2) is mounted in Rich media cabinet, and the loudspeaker array (3) is mounted on the wall around region of listening to the teacher；
The audio frequency processing system (2) includes shift frequency module (4), filter module (5) and signal amplification module (6), the shift frequency
Module (4) is electrically connected with filter module (5), and the shift frequency module (4) changes the frequency of collected voice signal, the filtering
Module (5) is electrically connected with signal amplification module (6), and the filter module (5) filters out the noise element of collected voice signal,
The signal amplification module (6) carries out power amplification to collected voice signal.
2. a kind of teaching private classroom speaker unit according to claim 1, it is characterised in that：The voice pickup dress
It includes microphone (7), audio amplification block (8) and analog-to-digital conversion module (9) to set (1), and the microphone (7) amplifies mould with audio
Block (8) is electrically connected, and the audio amplification block (8) is electrically connected with analog-to-digital conversion module (9).
3. a kind of teaching private classroom speaker unit according to claim 1, it is characterised in that：The loudspeaker array
(3) include multiple loud speakers (10), the loud speaker (10) is mounted on the wall around region of listening to the teacher, and apart from ground 2-
2.5m。
4. a kind of application method of teaching private classroom speaker unit, it is characterised in that：Include the following steps：
Step 100, sound pickup device are acquired the voice signal of teachers' instruction content；
Step 200, audio frequency processing system handle the collected sound of sound pickup device, and sound is believed by treated
Number pass to loudspeaker array；
Treated that audio electrical signal is converted to mechanical oscillation by audio frequency processing system for step 300, loudspeaker array, sends out sound
Sound.
5. a kind of application method of teaching private classroom speaker unit according to claim 4, it is characterised in that：It is described
In step 100, the step of sound pickup device collected sound signal, is as follows：
Step 101, microphone are acquired the voice signal of teachers' instruction content, when teachers' instruction the vibration of sound pass to wheat
On the vibrating diaphragm of gram wind, pushes the magnet of the inside to form the electric current of variation, convert voice signal to analog electrical signal；
Step 102, audio amplification block carry out power amplification to the collected analog electrical signal of microphone, by faint simulation electricity
Signal is converted into the analog electrical signal of accessible higher magnitude；
Amplified analog electrical signal is converted to digital electric signal by step 103, analog-to-digital conversion module, is the voice signal in later stage
Processing is prepared.
6. a kind of application method of teaching private classroom speaker unit according to claim 4, it is characterised in that：It is described
In step 200, sound processing system is as follows to the sound processing method of acquisition：
Step 201, shift frequency module change the frequency of analog-to-digital conversion module treated digital electric signal, destroy and generate acoustic feedback
Condition, to inhibit acoustic feedback；
Treated that digital electric signal is filtered to shift frequency module for step 202, filter module, by the noise in digital electric signal
Ingredient filters out, and retains the useful component in digital electric signal；
Step 203, signal amplification module carry out power amplification, the number after power amplification to the useful component in digital electric signal
Electric signal sends out larger voice signal through loudspeaker array, and completion amplifies to teachers' instruction content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711462119.0A CN108322865A (en) | 2017-12-28 | 2017-12-28 | A kind of teaching private classroom speaker unit and application method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711462119.0A CN108322865A (en) | 2017-12-28 | 2017-12-28 | A kind of teaching private classroom speaker unit and application method |
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| Publication Number | Publication Date |
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| CN108322865A true CN108322865A (en) | 2018-07-24 |
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| CN201711462119.0A Pending CN108322865A (en) | 2017-12-28 | 2017-12-28 | A kind of teaching private classroom speaker unit and application method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111883157A (en) * | 2020-07-23 | 2020-11-03 | 广东职业技术学院 | Language education system applied to mask environment |
| CN112232127A (en) * | 2020-09-14 | 2021-01-15 | 辽宁对外经贸学院 | Intelligent speech training system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103797816A (en) * | 2011-07-14 | 2014-05-14 | 峰力公司 | Speech enhancement system and method |
| CN105142089A (en) * | 2015-06-25 | 2015-12-09 | 厦门一心智能科技有限公司 | Onsite classroom pickup and loudspeaking system adapted to position of a speaker |
| CN107493528A (en) * | 2016-11-15 | 2017-12-19 | 北京唱吧科技股份有限公司 | A kind of sound processing method, device and microphone |
-
2017
- 2017-12-28 CN CN201711462119.0A patent/CN108322865A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103797816A (en) * | 2011-07-14 | 2014-05-14 | 峰力公司 | Speech enhancement system and method |
| CN105142089A (en) * | 2015-06-25 | 2015-12-09 | 厦门一心智能科技有限公司 | Onsite classroom pickup and loudspeaking system adapted to position of a speaker |
| CN107493528A (en) * | 2016-11-15 | 2017-12-19 | 北京唱吧科技股份有限公司 | A kind of sound processing method, device and microphone |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111883157A (en) * | 2020-07-23 | 2020-11-03 | 广东职业技术学院 | Language education system applied to mask environment |
| CN112232127A (en) * | 2020-09-14 | 2021-01-15 | 辽宁对外经贸学院 | Intelligent speech training system and method |
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Application publication date: 20180724 |
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