CN108766122A - A kind of device improving pronunciation of English quality with tactile - Google Patents

A kind of device improving pronunciation of English quality with tactile Download PDF

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Publication number
CN108766122A
CN108766122A CN201810649974.0A CN201810649974A CN108766122A CN 108766122 A CN108766122 A CN 108766122A CN 201810649974 A CN201810649974 A CN 201810649974A CN 108766122 A CN108766122 A CN 108766122A
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CN
China
Prior art keywords
installation casing
rectangle installation
english
arc
pronunciation
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Granted
Application number
CN201810649974.0A
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Chinese (zh)
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CN108766122B (en
Inventor
陈凯
涂艳群
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Changzhou Vocational Institute of Light Industry
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Changzhou Vocational Institute of Light Industry
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Priority to CN201810649974.0A priority Critical patent/CN108766122B/en
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00Teaching not covered by other main groups of this subclass
    • G09B19/06Foreign languages
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00Electrically-operated educational appliances
    • G09B5/04Electrically-operated educational appliances with audible presentation of the material to be studied

Abstract

The invention discloses a kind of devices improving pronunciation of English quality with tactile, including rectangle installation casing, audio player, No.1 power amplifier, loud speaker, switch and commercial power interface, the audio player and No.1 power amplifier are placed in lower surface in rectangle installation casing, the switch and commercial power interface are placed in rectangle installation casing side surface lower end, the rectangle installation casing left-hand face offers circular open, the loud speaker is on the inside of circular open, the rectangle installation casing left-hand face and audio collection mechanism is equipped in front of the loud speaker, rectangle installation casing upper surface is equipped with hand held sense of touch ball;The present invention relates to English teaching articles for use fields, loudspeaker vibration frequency is acquired by audio collection mechanism and is converted into electric current, vibration generating mechanism is recycled to convert the current to mechanical kinetic energy, and act on hand held sense of touch ball, so that learner is perceived the correct opportunity of English stress pronunciation by sense of touch, improves pronunciation of English quality.

Description

A kind of device improving pronunciation of English quality with tactile
Technical field
The present invention relates to English teaching articles for use field, especially a kind of device improving pronunciation of English quality with tactile.
Background technology
During the practice of pronunciation of English quality, stress is label and the soul of English rhythm, without stress just without English Rhythm, perception English rhythm is exactly to perceive English stress, the rhythm characteristic of English stress mainly by pitch, the duration of a sound, loudness of a sound and Four parameters of sound quality emerge from, and the British and the Americans are very sensitive to stress, and tone consciousness is poorer;Chinese to tone very Sensitivity, stress consciousness is then relatively weak, and Chinese speak English carries more apparent Chinese chamber Chinese tune mostly, it is clear that this is Chinese English stress learns the result of incomplete performance and Chinese rhythm mode influences.It is inappropriate in Chinese's pronunciation of English The English communication that stress alternate mode frequently results in Chinese and English native person interrupts, or even misreads, and cuts on the whole The weak comprehensibility of language lacks the big weak link that stress consciousness is Chinese learners, has become in pronunciation Improve a bottleneck of pronunciation of English quality.
The people much to study English at present can correct pronunciation of English by way of listening audio, improve pronunciation of English matter Amount.However during listening audio but can not emphasis catch the opportunity that English stress is sent out, can be thus pronunciation of English Learning tape carrys out extreme difficulties.At present on the market without the product for practice English stress pronunciation, in order to solve this problem, if Count it is a kind of with tactile improve pronunciation of English quality device be necessary.
Invention content
The purpose of the present invention is to solve the above problems, devise a kind of dress improving pronunciation of English quality with tactile It sets.
Realize above-mentioned purpose the technical scheme is that, it is a kind of with tactile improve pronunciation of English quality device, including Rectangle installation casing, audio player, No.1 power amplifier, loud speaker, switch and commercial power interface, the audio player and No.1 power amplifier is placed in lower surface in rectangle installation casing, and the switch and commercial power interface are placed in rectangle installation Babinet side surface lower end, the rectangle installation casing left-hand face offer circular open, and the loud speaker is opened flush-mounted in circle Mouthful inside, the rectangle installation casing left-hand face and is equipped with audio collection mechanism in front of the loud speaker, the rectangle installation Babinet upper surface is equipped with hand held sense of touch ball, is equipped with vibration generating mechanism inside the hand held sense of touch ball, the alternating current connects Mouthful output end be electrically connected by the input terminal of conducting wire and switch, the output end of the switch by conducting wire respectively with sound The input terminal of frequency player, No.1 power amplifier and loud speaker is electrically connected.
The audio collection mechanism includes fold-type mounting bracket, vibrating sensor, microcontroller and No. two power amplifiers, institute It states fold-type mounting bracket and is placed in rectangle installation casing left-hand face upper end and positioned at loud speaker top, the vibrating sensor peace It is placed on fold-type mounting bracket inner surface, the vibrating sensor is in contact with loud speaker front surface, the microcontroller placement In on front side surface, No. two power amplifiers are placed on the left of rectangle installation casing upper surface, institute in rectangle installation casing The output end for stating commercial power interface is electrically connected by the input terminal of conducting wire and microcontroller, the output end of the vibrating sensor It is electrically connected by the input terminal of conducting wire and microcontroller, the output end of the microcontroller passes through conducting wire and No. two power amplifications The input terminal of device is electrically connected.
If the hand held sense of touch ball include spherical shell, No.1 arc shell, No. two arc shells, several supporting rods and Dry compressed spring, the spherical shell upper surface offer arc opening, and the No.1 arc shell is located above arc opening, No. two arc shells are located in spherical shell and below arc opening, the No.1 arc shell and No. two arc shells It is attached support by several supporting rods between body, several described compressed spring one end are both connected to No. two arc shell upper tables Face edge, several compressed spring other ends are fixedly connected with spherical shell inner surface.
The vibration generating mechanism includes miniature motor, round turntable, hemispherical projections and idler wheel, No. two arc shells Body lower surface offers arc groove, and the idler wheel is placed on arc groove inner surface, and the miniature motor is placed in ball In shape shell in right lateral surface, the round turntable is placed on the output end of miniature motor, the round turntable side surface with Idler wheel mutually overlaps, and the hemispherical projections are placed on round turntable side surface, and the output end of No. two power amplifiers is logical The input terminal for crossing conducting wire and miniature motor is electrically connected.
Rectangle installation casing upper surface right side opening is equipped with hemispherical groove, and it is recessed that the spherical shell is positioned over hemispherical Within slot.
The spherical shell side surface is connected with protection connecting rope, the protection connecting rope other end and rectangle installation casing Right lateral surface upper end is fixedly connected.
Ball-shaped anti-slide set is cased on the spherical shell.
The spherical shell and ball-shaped anti-slide set lower surface offer heat emission hole.
The rectangle installation casing right lateral surface offers maintenance window, and the rectangle installation casing right lateral surface is connected with The protective cover to match with maintenance window.
Rectangle installation casing lower surface is connected with supporting rack.
A kind of device improving pronunciation of English quality with tactile made using technical scheme of the present invention, is adopted by audio Collecting mechanism acquires loudspeaker vibration frequency and is converted into electric current, and vibration generating mechanism is recycled to convert the current to mechanical kinetic energy, And hand held sense of touch ball is acted on, so that learner is perceived the correct opportunity of English stress pronunciation by sense of touch, improves pronunciation of English Quality.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of device improving pronunciation of English quality with tactile of the present invention;
Fig. 2 is a kind of front view of device improving pronunciation of English quality with tactile of the present invention;
Fig. 3 is a kind of vertical view of the spherical shell of device improving pronunciation of English quality with tactile of the present invention;
Fig. 4 is a kind of front view of the round turntable of device improving pronunciation of English quality with tactile of the present invention;
Fig. 5 be it is of the present invention it is a kind of with tactile improve pronunciation of English quality device Fig. 1 in A enlarged drawing.
In figure, 1, rectangle installation casing;2, audio player;3, No.1 power amplifier;4, loud speaker;5, it switchs;6, Commercial power interface;7, circular open;8, fold-type mounting bracket;9, vibrating sensor;10, microcontroller;11, No. two power amplifiers; 12, spherical shell;13, No.1 arc shell;14, No. two arc shells;15, supporting rod;16, compressed spring;17, arc is opened Mouthful;18, miniature motor;19, round turntable;20, hemispherical projections;21, idler wheel;22, arc groove;23, hemispherical groove; 24, connecting rope is protected;25, ball-shaped anti-slide set;26, heat emission hole;27, maintenance window;28, protective cover;29, supporting rack.
Specific implementation mode
The present invention is specifically described below in conjunction with the accompanying drawings, it is as shown in Figs. 1-5, a kind of to improve pronunciation of English matter with tactile The device of amount, including rectangle installation casing 1, audio player 2, No.1 power amplifier 3, loud speaker 4, switch 5 and alternating current connect Mouth 6, the audio player 2 and No.1 power amplifier 3 are placed in lower surface in rectangle installation casing 1,5 He of the switch Commercial power interface 6 is placed in 1 side surface lower end of rectangle installation casing, and 1 left-hand face of rectangle installation casing offers circle Opening 7, the loud speaker 4 is flush-mounted in 7 inside of circular open, 1 left-hand face of rectangle installation casing and before loud speaker 4 Side is equipped with audio collection mechanism, and 1 upper surface of rectangle installation casing is equipped with hand held sense of touch ball, in the hand held sense of touch ball Portion is equipped with vibration generating mechanism, and the output end of the commercial power interface 6 is electrically connected by the input terminal of conducting wire and switch 5 It connects, the output end of the switch 5 passes through the conducting wire input with audio player 2, No.1 power amplifier 3 and loud speaker 4 respectively End is electrically connected.
The audio collection mechanism includes fold-type mounting bracket 8, vibrating sensor 9, microcontroller 10 and No. two power amplifications Device 11, the fold-type mounting bracket 8 is placed in 1 left-hand face upper end of rectangle installation casing and positioned at 4 top of loud speaker, described to shake Dynamic sensor 9 is placed on 8 inner surface of fold-type mounting bracket, and the vibrating sensor 9 is in contact with 4 front surface of loud speaker, The microcontroller 10 is placed in rectangle installation casing 1 on front side surface, and No. two power amplifiers 11 are placed in rectangle peace It cases on the left of 1 upper surface of body, the output end of the commercial power interface 6 is electrically connected by the input terminal of conducting wire and microcontroller 10 It connects, the output end of the vibrating sensor 9 is electrically connected by the input terminal of conducting wire and microcontroller 10, the microcontroller 10 Output end be electrically connected by the input terminal of conducting wire and No. two power amplifiers 11.
The hand held sense of touch ball includes spherical shell 12, No.1 arc shell 13, No. two arc shells 14, several supports Bar 15 and several compressed springs 16,12 upper surface of the spherical shell offer arc opening 17, the No.1 arc shell 13 Above arc opening 17, No. two arc shells 14 are located in spherical shell 12 and positioned at 17 lower section of arc opening, institutes It states and is attached support, several compressions by several supporting rods 15 between No.1 arc shell 13 and No. two arc shells 14 16 one end of spring is both connected at No. two 14 top surface edges of arc shell, several 16 other ends of the compressed spring with spherical shape 12 inner surface of shell is fixedly connected.
The vibration generating mechanism includes miniature motor 18, round turntable 19, hemispherical projections 20 and idler wheel 21, and described two Number 14 lower surface of arc shell offers arc groove 22, and the idler wheel 21 is placed on 22 inner surface of arc groove, described Miniature motor 18 is placed in spherical shell 12 in right lateral surface, and the round turntable 19 is placed in the output end of miniature motor 18 On, 19 side surface of the round turntable is overlapped with 21 phase of idler wheel, and the hemispherical projections 20 are placed in 19 side surface of round turntable On, the output end of No. two power amplifiers 11 is electrically connected by the input terminal of conducting wire and miniature motor 18.
1 upper surface right side opening of the rectangle installation casing is equipped with hemispherical groove 23, and the spherical shell 12 is positioned over half Within spherical groove 23.
12 side surface of the spherical shell is connected with protection connecting rope 24, and 24 other end of protection connecting rope is pacified with rectangle 1 right lateral surface upper end of vanning body is fixedly connected.
Ball-shaped anti-slide set 25 is cased on the spherical shell 12.
The spherical shell 12 and ball-shaped anti-slide cover 25 lower surfaces and offer heat emission hole 26.
1 right lateral surface of rectangle installation casing offers maintenance window 27, and 1 right lateral surface of rectangle installation casing connects It is connected to the protective cover 28 to match with maintenance window 27.
1 lower surface of rectangle installation casing is connected with supporting rack 29.
The characteristics of the present embodiment, is, during use device, picks up hand held sense of touch ball first, that is, holds spherical shape Shell 12, then pass through 5 opening device of switch.The audio player 2 in rectangle installation casing 1 starts and plays English study at this time Audio, and by 3 amplified signal of No.1 power amplifier, raise one's voice and play out through loud speaker 4, learnt at this time by listening audio Pronunciation of English.At the same time audio collection mechanism starts, i.e., the vibrating sensor 9 and 4 phase of loud speaker that fold-type mounting bracket 8 supports Contact, according to the difference of English pronunciation weight, sound size and acuity are also different for the vibration that when 4 sounding of loud speaker generates, Therefore the vibration frequency of loud speaker 4 is also different, and loud speaker 4 plays the entire vibration processes of voice all by vibrating sensor 9 It captures, and is converted into faint current signal, after the processing of microcontroller 10, re-form command signal and be transmitted to No. two power and put At big device 11, through No. two 11 amplified signals of power amplifier, the electric current of generation carries for the vibration generating mechanism in spherical shell 12 For electric energy.I.e. miniature motor 18 starts, and round turntable 19 and hemispherical projections 20 is driven to be rotated, round turntable 19 and half Hemisphere jut 20 will utilize the idler wheel 21 jacked up in arc groove 22 of hemispherical projections 20 again and again during rotating, after And No. two arc shells 14 can be also jacked up, then under the drive of the connection through supporting rod 15, keep No.1 arc shell 13 continuous certainly Arc opening 17 ejects, and keeps the feel that hold spherical shell 12 vibrated.And as No. two power amplifiers 11 are small-sized The size of current that motor 18 provides constantly converts, and 18 velocity of rotation of miniature motor also constantly converts, and also makes No.1 arc shell 13 The frequency of vibration constantly converts, and user can experience pronunciation of English variation by sense of touch, and pronunciation of English is then made to learn thing Half work(times improves pronunciation of English quality, acquires loudspeaker vibration frequency by audio collection mechanism and is converted into electric current, recycles Vibration generating mechanism converts the current to mechanical kinetic energy, and acts on hand held sense of touch ball, so that learner is passed through sense of touch and perceives English On the correct opportunity of language stress pronunciation, improve pronunciation of English quality.
In the present embodiment, powered on first by commercial power interface 6, be powered for whole device.Wherein alternating current The output end of interface 6 is electrically connected by the input terminal of conducting wire and switch 5, the output end of switch 5 by conducting wire respectively with The input terminal of audio player 2, No.1 power amplifier 3 and loud speaker 4 is electrically connected.The output end of commercial power interface 6 is logical The input terminal for crossing conducting wire and microcontroller 10 is electrically connected, and the output end of vibrating sensor 9 passes through conducting wire and microcontroller 10 Input terminal is electrically connected, and the output end of microcontroller 10 is carried out electrically by the input terminal of conducting wire and No. two power amplifiers 11 Connection.The output end of No. two power amplifiers 11 is electrically connected by the input terminal of conducting wire and miniature motor 18.It is using During device, hand held sense of touch ball is picked up first, that is, holds spherical shell 12, then pass through 5 opening device of switch.Square at this time Audio player 2 in shape installation casing 1 starts and plays English study audio, and is amplified by No.1 power amplifier 3 and believed Number, it raises one's voice and plays out through loud speaker 4, at this time by listening audio come the pronunciation that studies English.At the same time audio collection mechanism opens Dynamic, i.e., the vibrating sensor 9 that fold-type mounting bracket 8 supports is in contact with loud speaker 4, the vibration root that when 4 sounding of loud speaker generates According to the difference of English pronunciation weight, sound size and acuity are also different, therefore the vibration frequency of loud speaker 4 is not yet Together, the entire vibration processes of the broadcasting of loud speaker 4 voice are all captured by vibrating sensor 9, and are converted into faint current signal, are passed through After the processing of microcontroller 10, re-forms command signal and be transmitted at No. two power amplifiers 11, put through No. two power amplifiers 11 The electric current of big signal, generation provides electric energy for the vibration generating mechanism in spherical shell 12.I.e. miniature motor 18 starts, and drives Round turntable 19 and hemispherical projections 20 are rotated, and half will be utilized during round turntable 19 and the rotation of hemispherical projections 20 The idler wheel 21 jacked up in arc groove 22 of hemisphere jut 20 again and again, then can also jack up No. two arc shells 14, then Under connection through supporting rod 15 drives, so that No.1 arc shell 13 is constantly ejected from arc opening 17, make to hold spherical shell 12 feel is vibrated.And as No. two power amplifiers 11 are that the size of current that miniature motor 18 provides constantly converts, 18 velocity of rotation of miniature motor also constantly converts, and so that the frequency that No.1 arc shell 13 vibrates constantly is converted, user's energy Experience pronunciation of English variation by sense of touch, so that pronunciation of English study is got twice the result with half the effort, improve pronunciation of English quality.Wherein fill When setting idle, spherical shell 12 can be made to be positioned within hemispherical groove 23.It is spherical that protection connecting rope 24 plays connection The effect of shell 12 and rectangle installation casing 1 prevents spherical shell 12 from being slid from hand and breaks.Ball-shaped anti-slide set 25 is sleeved on spherical shape Anti-skidding effect is played on shell 12.Heat emission hole 26 plays the role of heat dissipation to miniature motor 18.Protective cover 28 is wherein opened, from Maintenance window 27 can be to safeguarding inside rectangle installation casing 1.Wherein supporting rack 29 plays the role of supporting whole device.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art The principle of the present invention is embodied to some variations that some of which part may be made, belongs to the scope of protection of the present invention it It is interior.

Claims (10)

1. a kind of device improving pronunciation of English quality with tactile, including rectangle installation casing(1), audio player(2), No.1 Power amplifier(3), loud speaker(4), switch(5)And commercial power interface(6), which is characterized in that the audio player(2)With one Number power amplifier(3)It is placed in rectangle installation casing(1)Interior lower surface, the switch(5)And commercial power interface(6)Dispose In rectangle installation casing(1)Side surface lower end, the rectangle installation casing(1)Left-hand face offers circular open(7), described Loud speaker(4)Flush-mounted in circular open(7)Inside, the rectangle installation casing(1)Left-hand face and be located at loud speaker(4)Front Equipped with audio collection mechanism, the rectangle installation casing(1)Upper surface is equipped with hand held sense of touch ball, in the hand held sense of touch ball Portion is equipped with vibration generating mechanism, the commercial power interface(6)Output end pass through conducting wire with switch(5)Input terminal carry out it is electrical Connection, the switch(5)Output end by conducting wire respectively with audio player(2), No.1 power amplifier(3)And loud speaker (4)Input terminal be electrically connected.
2. a kind of device improving pronunciation of English quality with tactile according to claim 1, which is characterized in that the audio Collecting mechanism includes fold-type mounting bracket(8), vibrating sensor(9), microcontroller(10)With No. two power amplifiers(11), described Fold-type mounting bracket(8)It is placed in rectangle installation casing(1)Left-hand face upper end and be located at loud speaker(4)Top, the vibration Sensor(9)It is placed in fold-type mounting bracket(8)On inner surface, the vibrating sensor(9)With loud speaker(4)Front surface phase Contact, the microcontroller(10)It is placed in rectangle installation casing(1)On interior front side surface, No. two power amplifiers(11)Peace It is placed in rectangle installation casing(1)On the left of upper surface, the commercial power interface(6)Output end pass through conducting wire and microcontroller(10)It is defeated Enter end to be electrically connected, the vibrating sensor(9)Output end pass through conducting wire and microcontroller(10)Input terminal carry out electricity Property connection, the microcontroller(10)Output end pass through conducting wire and No. two power amplifiers(11)Input terminal electrically connected It connects.
3. a kind of device improving pronunciation of English quality with tactile according to claim 1, which is characterized in that the holding Formula sense of touch ball includes spherical shell(12), No.1 arc shell(13), No. two arc shells(14), several supporting rods(15)If with Dry compressed spring(16), the spherical shell(12)Upper surface offers arc opening(17), the No.1 arc shell(13) Positioned at arc opening(17)Top, No. two arc shells(14)Positioned at spherical shell(12)It is interior and be located at arc opening(17) Lower section, the No.1 arc shell(13)With No. two arc shells(14)Between pass through several supporting rods(15)It is attached branch Support, several compressed springs(16)One end is both connected to No. two arc shells(14)At top surface edge, several compressions Spring(16)The other end is and spherical shell(12)Inner surface is fixedly connected.
4. a kind of device improving pronunciation of English quality with tactile according to claim 1,2 and 3, which is characterized in that institute It includes miniature motor to state vibration generating mechanism(18), round turntable(19), hemispherical projections(20)And idler wheel(21), described No. two Arc shell(14)Lower surface offers arc groove(22), the idler wheel(21)It is placed in arc groove(22)Inner surface On, the miniature motor(18)It is placed in spherical shell(12)In interior right lateral surface, the round turntable(19)It is placed in small-sized Motor(18)Output end on, the round turntable(19)Side surface and idler wheel(21)It mutually overlaps, the hemispherical projections(20) It is placed in round turntable(19)On side surface, No. two power amplifiers(11)Output end pass through conducting wire and miniature motor (18)Input terminal be electrically connected.
5. a kind of device improving pronunciation of English quality with tactile according to claim 1 and 3, which is characterized in that described Rectangle installation casing(1)Upper surface right side opening is equipped with hemispherical groove(23), the spherical shell(12)It is recessed to be positioned over hemispherical Slot(23)Within.
6. a kind of device improving pronunciation of English quality with tactile according to claim 1 and 3, which is characterized in that described Spherical shell(12)Side surface is connected with protection connecting rope(24), the protection connecting rope(24)The other end and rectangle installation casing (1)Right lateral surface upper end is fixedly connected.
7. a kind of device improving pronunciation of English quality with tactile according to claim 1 and 3, which is characterized in that described Spherical shell(12)On be cased with ball-shaped anti-slide set(25).
8. a kind of device improving pronunciation of English quality with tactile according to claim 1,3 and 7, which is characterized in that institute State spherical shell(12)With ball-shaped anti-slide set(25)Lower surface offers heat emission hole(26).
9. a kind of device improving pronunciation of English quality with tactile according to claim 1, which is characterized in that the rectangle Installation casing(1)Right lateral surface offers maintenance window(27), the rectangle installation casing(1)Right lateral surface is connected with and safeguards Window(27)The protective cover to match(28).
10. a kind of device improving pronunciation of English quality with tactile according to claim 1, which is characterized in that the square Shape installation casing(1)Lower surface is connected with supporting rack(29).
CN201810649974.0A 2018-06-22 2018-06-22 Device for improving English pronunciation quality by touch sense Active CN108766122B (en)

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Cited By (3)

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CN109598991A (en) * 2019-01-11 2019-04-09 张翩 A kind of pronunciation of English tutoring system, device and method
CN110491271A (en) * 2019-08-02 2019-11-22 安徽盛鸿展览工程有限公司 A kind of machinery rhythm apparatus for demonstrating demonstration ball promotion diversion mechanism
CN114822092A (en) * 2022-04-13 2022-07-29 西安财经大学 Device for improving English pronunciation quality by touch sense

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CN109598991A (en) * 2019-01-11 2019-04-09 张翩 A kind of pronunciation of English tutoring system, device and method
CN110491271A (en) * 2019-08-02 2019-11-22 安徽盛鸿展览工程有限公司 A kind of machinery rhythm apparatus for demonstrating demonstration ball promotion diversion mechanism
CN110491271B (en) * 2019-08-02 2021-05-21 安徽盛鸿展览工程有限公司 Mechanical rhythm demonstration device promotes reposition of redundant personnel mechanism with demonstration ball
CN114822092A (en) * 2022-04-13 2022-07-29 西安财经大学 Device for improving English pronunciation quality by touch sense
CN114822092B (en) * 2022-04-13 2023-10-20 西安财经大学 Device for improving English pronunciation quality by using touch sense

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