CN2293869Y

CN2293869Y - Multi-media pronunciation learning device

Info

Publication number: CN2293869Y
Application number: CN 97235684
Authority: CN
Inventors: 马自成; 许炜
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-08
Filing date: 1997-04-08
Publication date: 1998-10-07
Anticipated expiration: 2007-04-08

Abstract

The utility model relates to a multiple media pronunciation learning device for the computer pronunciation teaching and is mainly composed of a pronunciation frequency input circuit, a pronunciation frequency output circuit, a pronunciation frequency magnification circuit, a switching circuit, a central controlling circuit, a displaying circuit, an address storage circuit and a pressing key converting circuit. The output end of the pronunciation frequency input circuit is connected with the input end of the switching circuit, and the output end of the switching circuit is connected with the input ends of the pronunciation frequency output circuit and the pronunciation frequency magnification circuit. The controlling end of the switching circuit is connected with the controlling end of the central controlling circuit, and the address storage circuit and the pressing key converting circuit are respectively and directly connected with the central controlling circuit.

Description

The multi-media voice learner

The utility model is a kind of phonetic study device that is applicable to the computerized speech teaching, belongs to computer language study equipment technical field.

Computer room and speech room are the modern teaching equipment of universities, middle and primary schools' indispensability.At present, the network-capable computer teaching makes teacher and student very convenient in the information interchange of image and text mode, but realizes that on computer network perfect phonetic teaching function is not too easy.Though the product of realizing part phonetic teaching function on computer network is abroad arranged at present, and insufficiency costs an arm and a leg, and has taken the software and hardware resources and the network service resource of computer in use.Must solve following problem if improve the phonetic teaching function:

One, improves server and workstation arithmetic speed and memory size;

Two, improve the data transfer rate of network;

Three, the low layer drive software of sound card versatility problem on the net.

Addressing these problems to implement just must cause hardware cost to strengthen and the software resource loss.

Goal of the invention of the present utility model just provides and a kind ofly makes computer network teaching possess the multi-media voice of improving instructional function and lower-cost multi-media voice learner.

Multi-media voice learner of the present utility model is made up of audio frequency input circuit, audio output circuit, audio amplifier circuit, commutation circuit, central control circuit, display circuit, address storage circuit, button, change-over circuit, the input end of the output termination commutation circuit of audio frequency input circuit, the output termination audio output circuit of commutation circuit and the input end of audio amplifier circuit, the control of commutation circuit and the control end of central control circuit join, display circuit, address storage circuit, button, change-over circuit respectively directly and central control circuit join.Its sound intermediate frequency input circuit mainly comprises operational amplifier U2:A, U2:B, U2:C, U2:D; Audio output circuit mainly comprises operational amplifier U5:A, U5:B, U5:D; Audio amplifier circuit mainly comprises integrated circuit U3 and U8; Commutation circuit mainly comprises on-off circuit U4 and U6; Central control circuit mainly is made of single chip microcomputer U1; Display circuit mainly is made up of circuit of display driving and LCD display; The address storage circuit mainly is made of integrated circuit U9; Button is made of ten buttons; Change-over circuit mainly is made of integrated circuit U7.The control end of commutation circuit respectively with the P of central control circuit U1 ₁₀～P ₁₆End joins." TXD " of central control circuit U1 and " AXD " end joins with " RO " and " DI " of change-over circuit U9 respectively.Address storage circuit U7 " CS, SK, DI, DO " end respectively with " WR, RD, T1, the R of central control circuit U1 _2.7" end be connected.

Multi-media voice learner of the present utility model directly is contained on the position of 5 cun floppy disks of computing machine, therefore, its power supply is directly directly powered by the Switching Power Supply of computing machine, this learner serves as the control core with central control circuit U1 (its model is 89C51), management control audio input circuit, audio output circuit, audio amplifier circuit, commutation circuit, display circuit, address storage circuit, change-over circuit and button.Its course of work is: distribute through amplifying and switching with microphone signal with from several groups of signals (CH1, CH2, CH3, GI) of program interchanger, send two groups of signals (MD, GO) again back to the program interchanger, another group signal send audio amplifying circuit is given earphone, and the control mode of central control circuit is to be determined by the instruction that teacher's main control computing machine sends.Communication is carried out with 488 communications portals between the main control computer of central control circuit U1 and outside, the input of U1 (89C51) " TXD, RXD ", output signal converts the AB parallel signal to through U9 (MAX487), this communication modes transmitting range can reach several kilometers, and communication line only needs simple twisted-pair feeder to connect 64 of terminal access.Address memory is signal and some information in order to preserve each terminal mainly.Button mainly is that data are provided with usefulness, by the P of U1 ₂₀-P ₂₆The key scanning circuit of formation 4 * 3 joins with it.

This reality is novel to have the following advantages:

1. adopt this utility model, make to have had the phonetic teaching function in the computer network teaching, by the phonetic teaching function, the interchange between the teacher and student is more convenient, more direct, and by means of the computer network function, the multimedia interaction teaching makes phonetic teaching more vivid.

2. owing to adopt this utility model, it physically is what to separate that the computer network Communication Control that makes is controlled at the voice exam analysis, does not therefore have the occupation problem of software and hardware resource between the two, and the compatibility of system is very strong.

3. owing to adopt this utility model, making tutoring system have take an examination preliminary work and examination aftertreatment work of standardization analytic function teacher can directly be finished by main frame, has improved teaching efficiency so greatly, has alleviated teacher's work load.

4. owing to adopt this utility model, data communication is used 488 modes, makes that the connection between each student's machine only needs a cable to link to each other, and has improved the reliability of system like this, has reduced the whole cost cost of system, has alleviated installment work intensity.

5. can finish following special instructional function:

A. six program source can be play two programs simultaneously;

B. can two people, the four-player group discussion, the teacher can insert any group at any time and take part in discussion;

C. the teacher can select one or one group of student to present a demonstration for full class;

D. the teacher can select to monitor the student arbitrarily and learn situation under the state that student's demonstration is not perceiveed;

E. the teacher can select any student to carry out the unit dialogue, and unit is given lessons;

F. teacher's sound-track engraving apparatus is collected arbitrary program source or arbitrary students in learning process;

G. the student starts shooting and registers screen display student call signal automatically;

H. the standardization examination analytic function can carry out list topic test, many topic tests, and the answer selected of real time monitoring student;

I. after examination finishes can, add up automatically and show number and the shared number percent of the appointment topic number being selected various answers, the appointment topic number is answered correct number and shared number percent, but and the various statisticses of convenient printing.

Fig. 1 is a structured flowchart of the present utility model.

Fig. 2 is an electrical schematic diagram of the present utility model.

Fig. 3 is a panel construction synoptic diagram of the present utility model.

Embodiment of the present utility model is as follows:

The characteristics that are eliminated according to 5 cun floppy disks of PC, structure of the present utility model is designed to the structure the same with floppy disk physical dimension, a power switch is arranged on panel, four LCD, A, B, C, D, INC, DEC, VOL+, VOL-and CALL button, the audio socket of two diameters 3.5, A, B, C, D, E is as the answer options button, when taking an examination for many topics, INC and DEC turn over paper topic key for the student, VOL is as the volume adjusting key, topic when volume and standardization examination number, model answer, get grading information, two audio sockets of MIC and PHONE are connected use for student's microphone earphone, MIC input student microphone signal, the signal after PHONE mouth output power is amplified is given student's earphone.

It is the single chip microcomputer of " 89C51 " that integrated circuit U1 wherein adopts model, it is the operational amplifier of " LM324 " that U2, U5 adopt new number, it is " 4051 " that U3 adopts model, the model of U4, U6 is " 4066 ", U7 is the EEP-RAM of " 93C46 ", U8 is power amplification circuit " LM386 ", and the model of U9 is " MAX487 ".This learner can be contained in respectively on some " Student computer " He Yitai " Computer for teachers ", links to each other with the program interchanger of teacher's special use with one group of parallel cable, to constitute a complete computer network language teaching system.

Claims

1. multi-media voice learner, it is characterized in that this phonetic study device is by audio frequency input circuit (1), audio output circuit (2), audio amplifier circuit (3), commutation circuit (4), central control circuit (5), display circuit (6), address storage circuit (7), button (8), change-over circuit (9) is formed, the input end of the output termination commutation circuit (4) of audio frequency input circuit (1), the output termination audio output circuit (2) of commutation circuit (4) and the input end of audio amplifier circuit (3), the control end of the control end of commutation circuit (4) and central control circuit (5) joins, display circuit (6), address storage circuit (7), button (8), change-over circuit (9) is distinguished directly and central control circuit (5) joins.

2. multi-media voice learner according to claim 1, the control end that it is characterized in that commutation circuit (4) respectively with the P of central control circuit (5) U1 ₁₀～P ₁₆End joins.

3. multi-media voice learner according to claim 1 and 2 is characterized in that " TXD " and " AXD " end of central control circuit (5) U1 joins with " RO " and " DI " of change-over circuit (9) U9 respectively.

4. multi-media voice learner according to claim 1 and 2, " CS, SK, DI, the DO " end that it is characterized in that address storage circuit (7) U7 respectively with " WR, RD, T1, the P of central control circuit (5) _2.7" end be connected.