CN100508649C - An audio magnetic permeation connection method and device thereof - Google Patents
An audio magnetic permeation connection method and device thereof Download PDFInfo
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- CN100508649C CN100508649C CNB2005100379678A CN200510037967A CN100508649C CN 100508649 C CN100508649 C CN 100508649C CN B2005100379678 A CNB2005100379678 A CN B2005100379678A CN 200510037967 A CN200510037967 A CN 200510037967A CN 100508649 C CN100508649 C CN 100508649C
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Abstract
The earphone signal is loaded into the earphone signal emission coil to generate audio magnetic field, which is received by earphone signal receiving coil in earphone signal amplifying circuit and is transformed into audio voltage signal. Then the signal is loaded into amplifying circuit to drive earphone. Meanwhile the mic in the mic-earphone amplifying circuit picks up the speech of student and sends it into amplifier of mic. After amplifying, it drives mic signal emission coil to generate audio magnetic field. The mic signal is received by mic signal reception coil and is transformed into audio signal of mic that is loaded into the mic plug in socket.
Description
Technical field
The present invention relates to phonetic teaching equipment and university's calculator room equipment, refer in particular to method of attachment of audio frequency magnetic conductance and device thereof between a kind of earphone microphone and phonetic teaching equipment and the university's calculator room equipment.
Background technology
The student's earphone microphone that uses in phonetic teaching equipment and the university calculator room equipment adopts the wired connection mode to link to each other with equipment, earphone microphone in the student unit hangs on the seat, earphone microphone in the shared classroom of refectory student, industry science student's curiosity is strong, last class hour with earphone microphone as moving back and forth object, cause student's earphone microphone spoilage very high, add and be difficult to manage reason, it is more serious to lose phenomenon, directly influenced the safe operation of phonetic teaching equipment, and from having influenced normally carrying out of order in education, increased the difficult management of large tracts of land use speech room, the operating cost height causes university's foreign language listening teaching of many universities and colleges to carry out in speech room securely.
In addition, there is same problem in the earphone microphone in the university in the machine room, damages and to lose phenomenon serious, cause many machine rooms that earphone microphone dare not be set, or the method that adopts the student to carry earphone microphone is carried out autonomous learning etc.When the student carried earphone microphone, because the frequent insertion of plug and extracting, it was serious to cause on the PC socket to damage phenomenon.
Summary of the invention
The purpose of this invention is to provide method of attachment of audio frequency magnetic conductance and device thereof between a kind of earphone microphone and phonetic teaching equipment and the university's calculator room equipment, to address the above problem.
Audio frequency magnetic conductance method of attachment between a kind of earphone microphone and phonetic teaching equipment and the university's calculator room equipment, it is characterized in that: the earphone signal of earphone signal of exporting on the speech room student's desk or the output of machine room PC sound card earphone socket, be added in the earphone signal transmitting coil in the audio frequency magnetic conductance device, produce earphone signal audio frequency magnetic field, earphone signal audio frequency magnetic field is received by the earphone signal receiving coil that the microphone earphone signal receives in the amplifier section, and convert audio voltage signal to, be added to and carry out power amplification in the stereophone driving amplifier, drive stereophone; Simultaneously, built-in microphone picks up student's sound of speech in the microphone earphone signal reception amplifier section, send in the high-fidelity microphone amplifier after converting the signal of telecommunication to, amplify rear drive microphone signal transmitting coil, produce microphone signal audio frequency magnetic field, microphone signal audio frequency magnetic field is received by the microphone signal receiving coil in the audio frequency magnetic conductance device, and convert the microphone audio signal to, be added in the microphone input socket or machine room PC sound card microphone input socket on the speech room student's desk, finish microphone signal transmission, realized that earphone microphone is connected with audio frequency magnetic conductance between phonetic teaching equipment and the university's calculator room equipment.
Audio frequency magnetic conductance jockey between a kind of earphone microphone and phonetic teaching equipment and the university's calculator room equipment, form by each student's desk of speech room or machine room PC earphone and microphone interface, it is characterized in that: increased audio frequency magnetic conductance device, the microphone earphone signal receives amplifier section, stereophone; Audio frequency magnetic conductance device is made up of a microphone signal receiving coil and an earphone signal transmitting coil, the microphone earphone signal receives amplifier section by a microphone, the high-fidelity microphone amplifier, the microphone signal transmitting coil, the earphone signal receiving coil, clear stereo earphone driving amplifier is formed, audio frequency magnetic conductance device is identical with the loop construction that the microphone earphone signal receives in the amplifier section, D.C. resistance is 3～30 Ω, form by low frequency core and the enamelled wire on low frequency core, two coils are not less than 30mm apart, lay respectively at the top of audio frequency magnetic conductance device and the bottom that the microphone earphone signal receives amplifier section; Audio frequency magnetic conductance device links to each other with microphone interface with each student's desk or the machine room PC earphone of speech room by lead-in wire, the microphone earphone signal receive amplifier section be positioned at audio frequency magnetic conductance device directly over, microphone signal receiving coil and earphone signal transmitting coil in microphone signal transmitting coil in the microphone earphone signal reception amplifier section and the earphone signal receiving coil difference perpendicular alignmnet audio frequency magnetic conductance device, the gap of vertical direction is not more than 5mm, and stereophone receives amplifier section by lead-in wire and microphone earphone signal and links to each other.
Receive the fm radio circuit that is provided with the CET examination in the amplifier section in addition at the microphone earphone signal, be used for the usefulness of foreign language listening examination.
An audio frequency magnetic conductance device location notch is set, and the coil in the assurance microphone earphone signal reception amplifier section is corresponding one by one with the coil in the audio frequency magnetic conductance device.
The present invention has properly settled the problem of speech room and the machine room middle school student of university earphone microphone difficult management from technological layer, make university's foreign language listening class large tracts of land enter speech room and obtained the reliable assurance on the equipment on class, set up a kind of new speech room and the machine room middle school student of university earphone microphone management mode: the microphone earphone signal of everyone pair receives amplifier section when utilizing every university student to enter the school, last hearing class or bring this earphone microphone when entering machine room into, as the earphone microphone in speech room and the machine room, thoroughly having solved speech room middle school student earphone microphone loses seriously, the strange high phenomenon of spoilage, thereby guaranteed the normal operation of teaching equipment reliably, guarantee normally carrying out of order in education, also greatly reduced the equipment operation cost simultaneously.The present invention has also highlighted following advantage: the one, can adopt apparatus of the present invention at low cost for existing all kinds speech room, and can realize all instructional functions of former speech room; The 2nd, after adopting apparatus of the present invention, the former student's earphone microphone of speech room is safeguarded and operating cost disappears, and the annual operating cost that needs to increase student's earphone microphone no longer occurs; The 3rd, adopt the audio frequency magnetic field of earphone and microphone signal directly to conduct voice signal, realizing not having between student's shared speech room equipment of earphone microphone school and the machine room PC machinery contact voice directly conducts, do not have the machinery contact and do not have enamelled wire and is connected, it is approaching zero to be connected the rate of breakdown that brings with enamelled wire by Mechanical Contact in theory; The 4th, student's microphone earphone signal receives amplifier section oneself and takes away keeping, and the artificial damage of thoroughly having stopped student's earphone microphone has participated in the management of school instruction equipment the student; The 5th, after student's earphone microphone was taken away voluntarily, the speech room system can be totally-enclosed, guaranteed the safety of entire equipment, and speech room can be used as other classrooms and uses, and the classroom utilization rate obviously improves.
Description of drawings
Fig. 1 coil and low frequency core structural representation
Coil position schematic diagram in Fig. 2 audio frequency magnetic conductance device
Fig. 3 microphone earphone signal receives the coil position schematic diagram in the amplifier section
Fig. 4 audio frequency magnetic conductance device and microphone earphone signal receive amplifier section relative position schematic diagram
Fig. 5 signal flow schematic diagram
1, low frequency core 2, enamelled wire 3, microphone signal receiving coil 4, earphone signal transmitting coil 5, microphone signal transmitting coil 6, earphone signal receiving coil 7, audio frequency magnetic conductance device 8, microphone earphone signal receive amplifier section
Embodiment
The following embodiment of institute will be further specified the present invention, but not thereby limiting the invention.
On each student's desk of speech room or machine room desk, install an audio frequency magnetic conductance device (7) additional, in audio frequency magnetic conductance device (7), establish a microphone signal receiving coil (3) and an earphone signal transmitting coil (4), two loop constructions are identical, with D.C. resistance is that the enamelled wire (2) of 12 Ω go up to constitute coil around low frequency core (1) respectively, as shown in Figure 1, again two coils are placed on the top of audio frequency magnetic conductance device (7), and to make two coil-spans be 30mm, as shown in Figure 2, microphone input interface on microphone signal receiving coil (3) and speech room desk or the machine room table links to each other by lead-in wire, and earphone signal transmitting coil (4) links to each other by going between with headset output interface on speech room desk or the machine room table; On audio frequency magnetic conductance device (7), keep flat a microphone earphone signal and receive amplifier section (8), in microphone earphone signal reception amplifier section (8), be provided with a microphone, high-fidelity microphone amplifier and microphone signal transmitting coil (5), earphone signal receiving coil (6), clear stereo earphone driving amplifier, two loop constructions are identical, with the coil D.C. resistance is that the enamelled wire (2) of 12 Ω go up to constitute coil around low frequency core (1) respectively, as shown in Figure 1, again two coils are placed on the bottom of microphone earphone signal reception amplifier section (8), and make two coils at a distance of being 35mm, as shown in Figure 3, the microphone earphone signal is received amplifier section (8) to be lain in the audio frequency magnetic conductance device location notch, guarantee microphone signal receiving coil (3) and earphone signal transmitting coil (4) in microphone signal transmitting coil (5) and earphone signal receiving coil (6) the difference perpendicular alignmnet audio frequency magnetic conductance device (7), make that the gap of vertical direction is 3mm, as shown in Figure 4; The earphone signal of earphone signal of exporting on the speech room student's desk or the output of machine room PC sound card earphone socket, be added in the earphone signal transmitting coil in the audio frequency magnetic conductance device (7) (4), produce earphone signal audio frequency magnetic field, earphone signal audio frequency magnetic field is received by the earphone signal receiving coil (6) that the microphone earphone signal receives in the amplifier section (8), and convert audio voltage signal to, be added to and carry out power amplification in the stereophone driving amplifier, drive stereophone; Simultaneously, built-in microphone picks up student's sound of speech in the microphone earphone signal reception amplifier section (8), send in the high-fidelity microphone amplifier after converting the signal of telecommunication to, amplify rear drive microphone signal transmitting coil (5), produce microphone signal audio frequency magnetic field, this microphone signal audio frequency magnetic field is received by the microphone signal receiving coil (3) in the audio frequency magnetic conductance device (7), and convert the microphone audio signal to, be added in the microphone input socket or machine room PC sound card microphone input socket on the speech room student's desk, finish the microphone signal transmission, thereby realize that earphone microphone is connected with audio frequency magnetic conductance between phonetic teaching equipment and the university's calculator room equipment, Fig. 5 is the signal flow schematic diagram.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100379678A CN100508649C (en) | 2005-03-04 | 2005-03-04 | An audio magnetic permeation connection method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100379678A CN100508649C (en) | 2005-03-04 | 2005-03-04 | An audio magnetic permeation connection method and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1713782A CN1713782A (en) | 2005-12-28 |
| CN100508649C true CN100508649C (en) | 2009-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100379678A Expired - Fee Related CN100508649C (en) | 2005-03-04 | 2005-03-04 | An audio magnetic permeation connection method and device thereof |
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| Country | Link |
|---|---|
| CN (1) | CN100508649C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109803188B (en) * | 2018-12-27 | 2020-09-22 | 维沃移动通信有限公司 | Electronic device and earphone |
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2005
- 2005-03-04 CN CNB2005100379678A patent/CN100508649C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1713782A (en) | 2005-12-28 |
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Granted publication date: 20090701 Termination date: 20100304 |