CN1163084C - Multimedia wireless speech intercommunication teaching system - Google Patents
Multimedia wireless speech intercommunication teaching system Download PDFInfo
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- CN1163084C CN1163084C CNB011140313A CN01114031A CN1163084C CN 1163084 C CN1163084 C CN 1163084C CN B011140313 A CNB011140313 A CN B011140313A CN 01114031 A CN01114031 A CN 01114031A CN 1163084 C CN1163084 C CN 1163084C
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Abstract
The present invention relates to a multimedia wireless speech intercommunication teaching system which has functions of image teaching, real-time intercommunication, self recitation, self listening, leading reading and following reading. A host machine of the system is composed of a transmitting unit and an antenna, a receiving unit and an antenna, a two-tone encoder, a tape machine, a microphone, an audio amplifier, a volume control unit, a power amplifier output stage, an earphone, an external loudspeaker, an optical driver, a key board and a control unit, wherein the control unit is connected with the key board and is used for respectively controlling the tape machine, the optical driver, the receiving unit, the transmitting unit and the external loudspeaker. A student machine is composed of a receiving antenna, a receiving unit, a two-tone decoder, a mute circuit, a volume power amplifier stage, an earphone and a receiving control unit, wherein the receiving control unit is used for controlling an audio signal to switch to a volume power amplifier unit and a transmitting unit.
Description
Technical field
The present invention is multimedia technology and the application of wireless communication technology in the voice electronic teaching, particularly a kind of multimedia wireless speech intercommunication teaching main frame and student's machine.
Background technology
At present, the wireless speech Education Literature System all is one-way transmission, and promptly teaching machine can only be broadcast voice, and student's machine can only receive voice, between the two can not intercommunication answer and lead in reading aloud with reading, and student's machine can not carry out from reading aloud from listening; In addition, existing wireless speech intercommunication tutoring system all can not be carried out the image teaching, and it is not lively to impart knowledge to students, and is unfavorable for that the student understands the content of courses better.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, provide a kind of have image teaching, intercommunication in real time and can realize the teacher lead in reading aloud the student with read, the student is from reading aloud from multimedia wireless speech intercommunication teaching main frame and the student's machine listened.
Said multimedia wireless speech intercommunication teaching main frame, comprise power supply, the double audio coding device, audio signal is modulated into the transmitter unit of FM signal and the transmitting antenna that the FM signal radiation is gone out, magnetic tape station, microphone, audio frequency amplifier, be connected on the volume control unit and the power amplifier of audio frequency amplifier output, signal output part at power amplifier is connected to earphone and external loudspeaker, said double audio coding device will carry out double audio coding by the real-time intercommunication control command of keyboard input, and after audio frequency amplifier amplifies, deliver to transmitter unit and be modulated into the FM signal and radiate through transmitting antenna, its special character is that the signal input part at audio frequency amplifier is connected to CD drive, said CD drive is connected with a video output interface, and vision signal is exported through this interface, realize that sound and image synchronization transmit, be connected at the input of audio frequency amplifier and be used for that the FM signal is carried out detection and amplify and be reduced into the receiving element of audio signal and be used for receiving the reception antenna of the FM signal that student's machine sends, this multimedia wireless speech intercommunication teaching main frame also comprises a keyboard, a control unit, described keyboard is connected with control unit, and described control unit is used to select magnetic tape station or CD drive work according to the input signal of keyboard, signal transmits between control transmitter unit and the audio frequency amplifier, signal transmission between signal transmission and control power amplifiers and the external loudspeaker between receiving element and the audio frequency amplifier.
Said student's machine comprises the reception antenna that is used for receiving the FM signal that main frame sends, the FM signal is reduced into the receiving element of audio signal, volume power amplifier unit and earphone that audio signal is amplified, the output of receiving element be connected to by filter circuit be used for to main frame in the code signal that sends of the double audio coding device double-tone interpreter code frequently device that carries out interpreter code, its special character is to be connected at receiving element and volume power amplifier unit to be used for preventing that off-mode from producing the mute circuit of noise when finishing classes and leave school the life start, output at double-tone interpreter code frequently device is connected to the reception control unit, said double-tone interpreter code frequently device is reduced into the command level signal with the audio signal that receives and delivers to the reception control unit, receive control unit and be connected on microphone unit, between transmitter unit and the volume power amplifier level, be used for volume power amplifier unit or transmitter unit being delivered in the audio signal switching of microphone unit output according to the command level signal of double-tone interpreter code frequently device output, the transmitting antenna of audio signal through linking to each other with transmitter unit of delivering to transmitter unit radiate to be realized leading in reading aloud and intercommunication function, and the audio signal of delivering to the volume power amplifier unit is reduced into sound through earphone and realizes from reading aloud from listening, with reading function.
Advantage of the present invention is to become multimedia wireless speech intercommunication tutoring system by multimedia wireless speech intercommunication teaching main frame with several multimedia wireless speech intercommunication teaching student mechanism, multimedia technology and wireless communication technology are blended in phonetic teaching and pass through receiving element, reception antenna, transmitter unit and transmitting antenna and double audio coding device, double-tone interpreter code frequently device is realized real-time intercommunication, lead in reading aloud with reading, from reading aloud from listening, by being set, CD drive realizes the image teaching, and then realization sound, the interactive teaching pattern of the synchronous driving of image, change the single in the past teaching pattern of hearing, quality of instruction and interest are got a qualitative improvement, to improving teaching pattern, improve student's Foreigh-language oral-speech ability to express, played substantial role.
Description of drawings
Fig. 1 is the circuit block diagram of this multimedia wireless speech intercommunication teaching main frame;
Fig. 2 is this multimedia wireless speech intercommunication teaching student machine circuit block diagram;
Fig. 3 is the circuit structure diagram of control unit among Fig. 1;
Fig. 4 is the winding diagram of control unit among Fig. 1;
Embodiment
This multimedia wireless speech intercommunication teaching main machine structure such as Fig. 1, Fig. 3, shown in Figure 4, this main frame has a power supply 19, keyboard 15, be used for receiving the reception antenna 3 of the FM signal that student's machine sends, be used for the FM signal is carried out the receiving element 5 that audio signal is amplified and is reduced in detection, audio signal is modulated into the transmitter unit 2 of FM signal and the transmitting antenna 1 that the FM signal radiation is gone out, be used for to carry out the double audio coding device 4 of double audio coding by the real-time intercommunication control command of keyboard 15 inputs, be used as the magnetic tape station 6 of signal source, microphone 8 and other signal source input terminal 9, between magnetic tape station 6 and microphone 8 outputs and the input of transmitter unit 2 signals, be connected to audio frequency amplifier 10, output at audio frequency amplifier 10 is connected to volume control unit 11 and power amplifier 12, signal output part at power amplifier 12 is connected to earphone 16 and external loudspeaker 17, signal input part at audio frequency amplifier 10 also is connected to CD drive 7, said CD drive 7 also is connected with video output interface 18, and vision signal is drawn through this interface, realize that sound and image synchronization transmit, on keyboard 15, also be connected to control unit 14, described control unit 14 is according to the input signal of keyboard, be used to select magnetic tape station 6 or CD drive 7 work and signal to transmit, the power supply of control transmitter unit 2 and with audio frequency amplifier 10 between the signal transmission, receiving element 5 power supply and with audio frequency amplifier 10 between signal transmit and control power amplifiers 12 and external loudspeaker 17 between the signal transmission, said control unit 14 is by the bistable circuit I (40) of control magnetic tape station 6 and CD drive 7 work, the dual output bistable circuit II (43) of control receiving element 5 work, the bistable circuit III (45) of control transmitter unit 2 work, the bistable circuit IV (47) of control external loudspeaker 17 work, be connected on bistable circuit I～IV (40,43,45 and 47) input is used for controlling bistable circuit I～IV upset and is arranged in four touch-switchs 50～53 on the keyboard 15, be connected on the ON-OFF control circuit I～IV (42 that constitutes by switching tube and relay of bistable circuit I～IV output respectively, 44,46 and 48) constitute normally-closed contact JK among the said ON-OFF control circuit I (42)
2(corresponding 36 and 37) is connected on respectively and is used between power supply 19 and the magnetic tape station 6 power supply being provided, being connected between magnetic tape station 6 and the audio frequency amplifier 10 to magnetic tape station 6, is used for the input of control audio signal, another normally-closed contact JK
1(corresponding 34 and 35) is connected on respectively and is used between power supply 19 and the CD drive 7 power supply being provided, being connected on and being used for the input of control audio signal between CD drive 7 and the audio frequency amplifier 10 to CD drive 7; A normally-closed contact JK among the said ON-OFF control circuit II (44)
4(corresponding 32 and 33) are connected between power supply 19 and the receiving element 5, are used for providing power supply to receiving element 5 another normally-closed contact JK
3(corresponding 38 and 39) is connected on and is used for the control signal input between audio frequency amplifier 10 and the receiving element 5, corresponding normally-closed contact JK among the said ON-OFF control circuit III (46)
6(corresponding 24 and 25) are connected on respectively between power supply 19 and the transmitter unit 2, are used for controlling providing power supply, another normally-closed contact JK for transmitter unit 2
5(corresponding 28 and 29) is connected between audio frequency amplifier 10 and the transmitter unit 2, is used for the output of control signal; Normally-closed contact JK among the said ON-OFF control circuit IV (48)
7(corresponding 30 and 31) are as external output unit 13, be connected between power amplifier 12 and the external loudspeaker 17, be used for controlling the input of external loudspeaker 17 signals, terminal 26 and 27 connects power supply 19, terminal 22 and 23 is connected between keyboard 15 and the volume control unit 11, output at bistable circuit I (40) also is connected to the luminous indicating circuit 41 of tape/CD work that is made of resistance and luminous tube, at bistable circuit II～IV (43,45,47) output is connected to the receiving element/transmitter unit/outer sound output unit working indicating 49 that is made of current-limiting resistance and light-emitting diode.
After power input 21 connects electricity, energized switch 20, the touch-switch of pressing on the keyboard unit 15 50 is selected magnetic tape station 6 or CD drive 7, insert tape or CD, press corresponding play button in the keyboard unit 15 again, magnetic tape station 6 or CD-ROM drive 7 are delivered to output audio signal to carry out processing and amplifying in the audio frequency amplifier 10 at this moment.Signal after the amplification divides two-way, wherein one the tunnel send into transmitter unit 2, press emission key 52 in the keyboard unit 15 this moment, the audio signal that audio frequency amplifier 10 is sent in transmitter unit 2 work here is modulated, and be modulated into the FM radiofrequency signal, amplify after transmitting antenna 1 radiate; Volume control unit 11 is delivered on another road and power amplifier 12 amplifies, and after the filtering noise reduction process, is reduced into the sound of wash rice clearly through earphone 16.Then external loudspeaker 17 also will be exported clear wash rice sound as if the monitoring key of pressing in the keyboard 15 53 this moment.The external video output terminal of this machine is delivered in the vision signal that CD drive 7 is sent output after processing such as video output interface 18 amplification filtering.This terminal can connect equipment such as large-screen receiver, projector and be reduced into image.Microphone 8 and the audio signal that is connected on audio frequency apparatus 9 ｀ on the miscellaneous equipment input terminal 9 are directly delivered to audio frequency amplifier 10, and audio frequency amplifier unit 10 carries out dividing two-way output after the processing and amplifying, and the control of uncontrolled unit 14.Wherein one tunnel signal of delivering to transmitter unit 2 is modulated into the FM signal and radiate through transmitting antenna 1, volume control unit 11 is delivered on another road, power amplifier 12 is reduced into sound through earphone 16, if monitoring key 53, then external loudspeaker 17 sounding in the keypad 15 again.
Behind the emission key 52 and numerical key in the keypad 15, double audio coding device 4 work output dual tone multiple frequency code signals are delivered to audio frequency amplifier 10 and are delivered to after amplifying that transmitter unit 2 is modulated into the FM signal after transmitting antenna 1 radiate, study of Confucian classics life receive decoding back control student machine read aloud certainly from listen, with reading to lead in reading aloud and two-way intercommunication function.
Said student's machine structure as shown in Figure 2, said student's machine comprises power supply 66, be used for receiving the reception antenna 55 of the FM signal that main frame sends, the FM signal is reduced into the receiving element 56 of audio signal, volume power amplifier unit 63 and earphone 65 that audio signal is amplified, be connected on being used between receiving element 56 and the volume power amplifier unit 63 and prevent that off-mode from producing the mute circuit 60 (model is TDA7021T) of noise when finishing classes and leave school the life start, the output of receiving element 56 be connected to by filter circuit 57 be used for to main frame in reading aloud certainly of sending of diphthong coding device 5 from listening, with reading to lead in reading aloud the double-tone interpreter code frequently device 58 that code signal carries out interpreter code, said double-tone interpreter code frequently device 58 outputs link to each other with reception control unit 61, student's machine energized switch, reception antenna 55 receives to be delivered to receiving element 56 behind the FM signal that main frame sends and is reduced into audio signal divides two-way output after the demodulation detection, wherein one the tunnel after filter circuit 57 filtering, deliver to double-tone frequently interpreter code device 58 decode, be reduced into the command level signal and deliver to reception control unit 61, mute circuit 60 is delivered on another road, delivers to volume power amplifier unit 63 again and is reduced into sound through earphone 65.Receive control unit 61 and be connected on microphone unit 62, between transmitter unit 59 and the volume power amplifier unit 63, be used for volume power amplifier unit 63 or transmitter unit 59 being delivered in the audio signal switching of microphone unit 62 outputs according to the command level signal of double-tone interpreter code frequently device 58 outputs, the transmitting antenna 64 of audio signal through linking to each other with transmitter unit 59 of delivering to transmitter unit 59 radiate to be realized leading in reading aloud and intercommunication function, the audio signal of delivering to volume power amplifier unit 63 is reduced into sound through earphone 65 and realizes from reading aloud from listening, with reading function, said reception control unit 61 can adopt four path analoging switch, and model is 4066.
Claims (2)
1, a kind of multimedia wireless speech intercommunication teaching main frame, comprise power supply, the double audio coding device, audio signal is modulated into the transmitter unit of FM signal and the transmitting antenna that the FM signal radiation is gone out, magnetic tape station, microphone, audio frequency amplifier, be connected on the volume control unit and the power amplifier of audio frequency amplifier output, signal output part at power amplifier is connected to earphone and external loudspeaker, said double audio coding device will carry out double audio coding by the real-time intercommunication control command of keyboard input, and after audio frequency amplifier amplifies, deliver to transmitter unit and be modulated into the FM signal and radiate through transmitting antenna, it is characterized in that: the signal input part at audio frequency amplifier is connected to CD drive, said CD drive is connected with a video output interface, and vision signal is exported through this interface, realize that sound and image synchronization transmit, be connected at the input of audio frequency amplifier and be used for that the FM signal is carried out detection and amplify and be reduced into the receiving element of audio signal and be used for receiving the reception antenna of the FM signal that student's machine sends, this multimedia wireless speech intercommunication teaching main frame also comprises a keyboard, a control unit, described keyboard is connected with control unit, and described control unit is used to select magnetic tape station or CD drive work according to the input signal of keyboard, signal transmits between control transmitter unit and the audio frequency amplifier, signal transmission between signal transmission and control power amplifiers and the external loudspeaker between receiving element and the audio frequency amplifier.
2, a kind of multimedia wireless speech intercommunication teaching student machine, comprise the reception antenna that is used for receiving the FM signal that main frame sends, the FM signal is reduced into the receiving element of audio signal, volume power amplifier unit and earphone that audio signal is amplified, the output of receiving element be connected to by filter circuit be used for to main frame in the code signal that sends of the double audio coding device double-tone interpreter code frequently device that carries out interpreter code, it is characterized in that: between receiving element and volume power amplifier unit, be connected to and be used for preventing that off-mode from producing the mute circuit of noise when finishing classes and leave school the life start, output at double-tone interpreter code frequently device is connected to the reception control unit, said double-tone interpreter code frequently device is reduced into the command level signal with the audio signal that receives and delivers to the reception control unit, receive control unit and be connected on microphone unit, between transmitter unit and the volume power amplifier unit, be used for volume power amplifier unit or transmitter unit being delivered in the audio signal switching of microphone unit output according to the command level signal of double-tone interpreter code frequently device output, the transmitting antenna of audio signal through linking to each other with transmitter unit of delivering to transmitter unit radiate to be realized leading in reading aloud and intercommunication function, and the audio signal of delivering to the volume power amplifier unit is reduced into sound through earphone and realizes from reading aloud from listening, with reading function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011140313A CN1163084C (en) | 2001-06-01 | 2001-06-01 | Multimedia wireless speech intercommunication teaching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011140313A CN1163084C (en) | 2001-06-01 | 2001-06-01 | Multimedia wireless speech intercommunication teaching system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1367619A CN1367619A (en) | 2002-09-04 |
| CN1163084C true CN1163084C (en) | 2004-08-18 |
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ID=4660724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011140313A Expired - Fee Related CN1163084C (en) | 2001-06-01 | 2001-06-01 | Multimedia wireless speech intercommunication teaching system |
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| Country | Link |
|---|---|
| CN (1) | CN1163084C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328137A (en) * | 2016-08-19 | 2017-01-11 | 镇江惠通电子有限公司 | Voice control method, voice control device and voice control system |
| CN106992024A (en) * | 2017-04-11 | 2017-07-28 | 吴子昂 | A kind of modernizing teaching intelligent voice system |
| CN106961587A (en) * | 2017-04-27 | 2017-07-18 | 泰州市永正救护装备有限公司 | Double-directional speech high-resolution wireless digital graphic transmission equipment |
-
2001
- 2001-06-01 CN CNB011140313A patent/CN1163084C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1367619A (en) | 2002-09-04 |
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