CN110189559A - A kind of intelligence pronunciation of English tutoring system - Google Patents
A kind of intelligence pronunciation of English tutoring system Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
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Abstract
The present invention provides a kind of intelligent pronunciation of English tutoring system, utilize input equipment, show equipment, image collecting device, power supply indicator, reading data mouth, stereo set, sound transducer, signal processing circuit, image processing apparatus, power supply battery plate, voltage sensor, nozzle type when central processing unit and storage equipment are to the pronunciation and pronunciation of user is acquired, signal amplification is successively carried out using pronunciation signal of the signal processing circuit to acquisition and signal is filtered, the pronunciation of original subscriber can really be gone back, furthermore, nozzle type and standard nozzle type when by by user's pronunciation are shown on the display device in order to user's comparison, and then training correctly pronunciation.
Description
Technical field:
The present invention relates to intelligent tutoring field more particularly to a kind of intelligent pronunciation of English tutoring systems.
Background technique:
With deep and Chinese foreign opening advancement the development of economic globalization, the AC ports benefit of China and countries in the world
Increase.English is as most widely used language in the world, oneself is through as essential work in people mouthful often work and life
One of tool.Start to study English along with more and more Chinese, more and more Expert English language training by qualified teachers mechanisms and English also occurs
Language learning tool.According to statistics, in the number of Chinese English learning, oneself has been more than 400,000,000 5 thousand ten thousand, but the spoken water of English learner
Universal deviation is equalled, the Oral English Practice of only 13.2% people is qualified.Oral English Practice becomes a problem in compatriots' English study,
To find out its cause, essentially consisting in following 3 aspects:
1. English and Chinese have very big difference on manner of articulation.Chinese grow up under Chinese native environment from small,
Many can be made when studying English and oneself be difficult the pronunciation mistake discovered, often formed if corrected not in time when starting study
The very non-type spoken language such as " Chinglish ".
2. domestic school extremely lacks qualified Oral English Practice teacher.Even in the middle and primary schools of big and medium-sized cities, also very
Lack pronunciation standard while can accurately instruct the English teacher of spoken language pronunciation.General multimedia teaching, also can only unilaterally
It is taught, teacher is less able to carry out interaction oral English teaching for the specific condition of student, thus does not also have effectively
Effect.
3. lacking practice spoken time and environment.Language is a kind of mode of exchange, it is most important that multiple sound is practiced more
It practises, but in traditional English study, people often take a significant amount of time and write in English reading, and lack on spoken language pronunciation
The chance of temporal guarantee and practice.
Currently marketed English study software, stresses the raising of the abilities such as English reading and writing mostly.Only some spoken languages
Word pronunciation learning software function is relatively simple, can only carry out simply pronouncing with the operation such as reading, lack to the effective of learner's pronunciation
Feedback, training effect is not ideal enough, and is unable to real embodiment to learner's pronunciation, often there is the case where distortion.
Summary of the invention:
Therefore, in order to overcome the above problem, the present invention is provided a kind of intelligent pronunciation of English tutoring system, is set using input
Standby, display equipment, image collecting device, power supply indicator, reading data mouth, stereo set, sound transducer, signal processing electricity
The pronunciation and reading of road, image processing apparatus, power supply battery plate, voltage sensor, central processing unit and storage equipment to user
Nozzle type when sound is acquired, and successively carries out signal amplification using pronunciation signal of the signal processing circuit to acquisition and signal filters
Processing can really go back the pronunciation of original subscriber, furthermore, nozzle type and standard nozzle type when by by user's pronunciation, which are shown, to be shown
In order to user's comparison in equipment, and then training is correctly pronounced.
Intelligence pronunciation of English tutoring system provided by the invention includes input equipment, display equipment, image collecting device, electricity
Source indicator light, reading data mouth, stereo set, sound transducer, signal processing circuit, image processing apparatus, power supply battery plate, electricity
Pressure sensor, central processing unit and storage equipment.
Wherein, input equipment is set on the shell of intelligent pronunciation of English tutoring system, and user passes through input equipment to intelligence
Can pronunciation of English tutoring system input English word, display equipment, image collecting device, power supply indicator, reading data mouth with
And stereo set is all set on the shell of intelligent pronunciation of English tutoring system, image collecting device is pronouncing for acquiring user
When nozzle type image information；Sound transducer, signal processing circuit, image processing apparatus, power supply battery plate, voltage sensor, in
Centre processing unit, storage equipment are all set in intelligent pronunciation of English tutoring system shell.
Wherein, the output end of sound transducer and the input terminal of signal processing circuit connect, and sound transducer is for acquiring
The pronunciation signal of user, the output end of image collecting device and the input terminal of image processing apparatus connect, and power supply battery plate is intelligence
Pronunciation of English tutoring system provides electric power support, and voltage sensor is used to monitor the residual voltage signal of battery plate of powering, at signal
The output end for managing the output end of circuit, the output end of input equipment, the output end of image processing apparatus and voltage sensor is equal
It is connect with the input terminal of central processing unit, shows the input terminal of equipment, the input terminal of power supply indicator, the input for storing equipment
The input terminal of end and stereo set is connect with the output end of central processing unit, and user reads storage by reading data mouth
Data in equipment.
Preferably, user inputs English word by input equipment, and central processing unit passes the English word of input
It transports to display equipment to be shown, first memory and second memory is stored in central processing unit, in first memory
Be stored with standard pronunciation, be stored with standard nozzle type image in second memory, central processing unit according to the English word of input,
The standard pronunciation of the word stored in first memory is transmitted to stereo set to play out, central processing unit is according to defeated
The standard nozzle type of the word stored in second memory is transmitted to display equipment and shown by the English word entered, user
Voluntarily pronounced according to the English word of input, sound transducer is used to acquire the pronunciation signal of user, and pronunciation signal is transmitted
To signal processing circuit, signal processing circuit is transmitted to central processing dress after carrying out signal processing to the pronunciation signal received
It sets, the pronunciation signal received is transmitted to stereo set and played out by central processing unit, and image collecting device will collect
Nozzle type image transmitting of the user in pronunciation to image processing apparatus, image processing apparatus carries out image to the image received
Central processing unit is transmitted to after processing, the image information received is transmitted to display equipment and shown by central processing unit
Show.
Preferably, sound transducer is used to acquire the pronunciation signal of user, and pronunciation signal is transmitted to signal processing
Circuit, signal processing circuit are transmitted to center after successively carrying out signal amplification and signal filtering processing to the pronunciation signal received
The pronunciation signal received is transmitted to stereo set and played out by processing unit, central processing unit.
Preferably, image collecting device fills nozzle type image transmitting to image procossing of the collected user in pronunciation
It sets, image processing apparatus carries out during image successively carries out being transmitted to after image filtering and image enhancement processing the image that receives
Processing unit is entreated, the image information received is transmitted to display equipment and shown by central processing unit.
Preferably, sound transducer is used to acquire the pronunciation signal of user, and the voice signal of acquisition is converted to voltage
Signal V0, and voltage signal V0 is transmitted to signal processing circuit, V1 be by signal processing circuit treated voltage signal,
Signal processing circuit includes signal amplification unit and signal filter unit, the output end of sound transducer and signal amplification unit
Input terminal connection, the output end of signal amplification unit are connect with the input terminal of signal filter unit, the output of signal filter unit
End is connect with the input terminal of central processing unit.
Preferably, signal amplification unit includes integrated transporting discharging A1-A2, field-effect tube VT1-VT2, capacitor C1-C3 and electricity
Hinder R1-R10.
Wherein, the output end of sound transducer is connect with one end of resistance R1, one end of resistance R1 also with field-effect tube VT1
Grid connection, the other end of resistance R1 connect with the inverting input terminal of integrated transporting discharging A1, the other end of resistance R1 also with capacitor
One end of C1 connects, and one end of resistance R2 is connect with the grid of field-effect tube VT2, the other end of resistance R2 also with resistance R9 one
End connection, the other end of resistance R2 are connect with the non-inverting input terminal of integrated transporting discharging A1, and one end ground connection of capacitor C2, capacitor C2's is another
One end is connect with the non-inverting input terminal of integrated transporting discharging A1, and the other end of capacitor C1 is connect with the output end of integrated transporting discharging A1, resistance
One end of R3 is connect with the output end of integrated transporting discharging A1, one end of capacitor C3 ground connection, and the other end of capacitor C3 is another with resistance R3's
One end connection, the other end of capacitor C3 are also connect with one end of resistance R4, and the other end of resistance R4 is connect with one end of resistance R5,
The other end of resistance R5 is connect with+5V power supply, and one end of resistance R6 is connect with the inverting input terminal of integrated transporting discharging A2, resistance R6's
The other end is connect with one end of resistance R5, and one end of resistance R6 is also connect with the drain electrode of field-effect tube VT1, one end of resistance R7 with
The non-inverting input terminal of integrated transporting discharging A2 connects, and the other end of resistance R7 is connect with+5V power supply, one end of resistance R7 also with field-effect
The drain electrode of pipe VT2 connects, and one end of resistance R8 is connect with -5V power supply, the source electrode of field-effect tube VT1 and the source of field-effect tube VT2
It is extremely connect with the other end of resistance R8, one end ground connection of resistance R10, the other end of resistance R10 and the grid of field-effect tube VT2
Connection, the other end of resistance R10 are also connect with one end of resistance R9, and the other end of resistance R9 and the output end of integrated transporting discharging A2 connect
It connects.
Preferably, signal filter unit includes it is characterized in that, signal filter unit includes resistance R11-R14, capacitor
C4-C5 and integrated transporting discharging A3.
Wherein, the output end of signal amplification unit is connect with one end of resistance R11, the other end and capacitor C4 of resistance R11
One end connection, the other end of resistance R11 also connect with one end of resistance R12, and one end of capacitor C5 is grounded, and capacitor C5's is another
End is connect with the other end of resistance R12, and the other end of resistance R12 is also connect with the non-inverting input terminal of integrated transporting discharging A3, capacitor C4
The other end connect with the output end of integrated transporting discharging A3, one end of resistance R14 ground connection, the other end of resistance R14 and resistance R13's
One end connection, the other end of resistance R14 also connect with the inverting input terminal of integrated transporting discharging A3, the other end of resistance R13 with integrate
The output end of amplifier A3 connects, and the output end of integrated transporting discharging A3 and the input terminal of central processing unit connect, signal filter unit
Voltage signal V1 is transmitted to central processing unit.
Preferably, further include a comparing unit in central processing unit, a predeterminated voltage threshold is stored in comparing unit
Value, the voltage value that voltage sensor will test is transmitted to comparing unit, if the voltage value that comparing unit receives is greater than or waits
In predetermined voltage threshold, then central processing unit control power supply indicator lights green light, if the voltage value that comparing unit receives
Less than predetermined voltage threshold, then central processing unit control power supply indicator lights amber light.
Preferably, the pronunciation signal and image information that receive are transmitted to storage equipment by central processing unit.
Preferably, display equipment is LCD display device.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) present invention provides a kind of intelligent pronunciation of English tutoring system, utilizes input equipment, display equipment, Image Acquisition
Device, power supply indicator, reading data mouth, stereo set, sound transducer, signal processing circuit, image processing apparatus, power supply
Nozzle type when battery plate, voltage sensor, central processing unit and storage equipment are to the pronunciation and pronunciation of user is acquired, and is made
Signal amplification and signal filtering processing are successively carried out with pronunciation signal of the signal processing circuit to acquisition, can really restore use
The pronunciation at family, furthermore, nozzle type and standard nozzle type when by by user's pronunciation are shown on the display device in order to which user compares,
And then training correctly pronunciation.
(2) a kind of intelligent pronunciation of English tutoring system provided by the invention, inventive point of the invention are also resided in due to sound
The signal of sensor acquisition is faint current signal, thus signal amplification unit passes through integrated transporting discharging A1-A2, field-effect tube
VT1-VT2, capacitor C1-C3 and resistance R1-R10 amplify processing to the voltage V0 that sound transducer exports, by integrated transporting discharging
The signal amplification unit that A1-A2, field-effect tube VT1-VT2, capacitor C1-C3 and resistance R1-R10 are constituted only has the drift of 0.7 μ V/ DEG C
The noise of 1.7nV in offset, 100pA bias current and the broadband 0.1Hz to 10Hz within shifting, 2 μ V.Wherein, signal filtering is single
Member is carried out at low-pass filtering using resistance R11-R14, capacitor C4-C5 and integrated transporting discharging A3 to by amplified voltage signal
Reason, to improve the precision to the detection of user's pronunciation.
Detailed description of the invention:
Fig. 1 is the functional diagram of intelligent pronunciation of English tutoring system of the invention；
Fig. 2 is the main view of intelligent pronunciation of English tutoring system of the invention；
Fig. 3 is the circuit diagram of signal processing circuit of the invention.
Appended drawing reference:
1- input equipment；2- shows equipment；3- image collecting device；4- power supply indicator；5- reading data mouth；6- sound equipment
Equipment.
Specific embodiment:
Intelligent pronunciation of English tutoring system provided by the invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figs. 1-2, intelligent pronunciation of English tutoring system provided by the invention include input equipment 1, display equipment 2,
Image collecting device 3, power supply indicator 4, reading data mouth 5, stereo set 6, sound transducer, signal processing circuit, image
Processing unit, power supply battery plate, voltage sensor, central processing unit and storage equipment.
Wherein, input equipment 1 is set on the shell of intelligent pronunciation of English tutoring system, user by input equipment 1 to
Intelligent pronunciation of English tutoring system inputs English word, shows equipment 2, image collecting device 3, power supply indicator 4, reading data
Mouth 5 and stereo set 6 are all set on the shell of intelligent pronunciation of English tutoring system, and image collecting device 3 is used for acquiring
Nozzle type image information of the family in pronunciation；Sound transducer, signal processing circuit, image processing apparatus, power supply battery plate, voltage pass
Sensor, central processing unit, storage equipment are all set in intelligent pronunciation of English tutoring system shell.
Wherein, the output end of sound transducer and the input terminal of signal processing circuit connect, and sound transducer is for acquiring
The pronunciation signal of user, the output end of image collecting device 3 and the input terminal of image processing apparatus connect, and power supply battery plate is intelligence
Pronunciation of English tutoring system provides electric power support, and voltage sensor is used to monitor the residual voltage signal of battery plate of powering, at signal
The output end for managing the output end of circuit, the output end of input equipment 1, the output end of image processing apparatus and voltage sensor is equal
It is connect with the input terminal of central processing unit, shows the input terminal of equipment 2, the input terminal of power supply indicator 4, stores the defeated of equipment
The input terminal for entering end and stereo set 6 is connect with the output end of central processing unit, and user is read by reading data mouth 5
Store the data in equipment.
In above embodiment, input equipment 1, display equipment 2, image collecting device 3, power supply indicator 4, data are utilized
Reading-port 5, stereo set 6, sound transducer, signal processing circuit, image processing apparatus, power supply battery plate, voltage sensor, in
It centre processing unit and stores nozzle type of the equipment to the pronunciation and pronunciation of user when and is acquired, using signal processing circuit to adopting
The pronunciation signal of collection successively carries out signal amplification and signal filtering processing, can really go back the pronunciation of original subscriber, furthermore, pass through
Nozzle type and standard nozzle type when by user's pronunciation show in order to user's comparison in display equipment 2, and then training is correctly sent out
Sound.
Specifically, user inputs English word by input equipment 1, and central processing unit transmits the English word of input
It is shown to display equipment 2, first memory and second memory, first memory memory is stored in central processing unit
Standard pronunciation is contained, standard nozzle type image is stored in second memory, central processing unit, will according to the English word of input
The standard pronunciation of the word stored in first memory is transmitted to stereo set 6 and plays out, and central processing unit is according to defeated
The standard nozzle type of the word stored in second memory is transmitted to display equipment 2 and shown by the English word entered, user
Voluntarily pronounced according to the English word of input, sound transducer is used to acquire the pronunciation signal of user, and pronunciation signal is transmitted
To signal processing circuit, signal processing circuit is transmitted to central processing dress after carrying out signal processing to the pronunciation signal received
It sets, the pronunciation signal received is transmitted to stereo set 6 and played out by central processing unit, and image collecting device 3 will acquire
For nozzle type image transmitting of the user arrived in pronunciation to image processing apparatus, image processing apparatus carries out figure to the image received
As being transmitted to central processing unit after processing, the image information received is transmitted to display equipment 2 and carried out by central processing unit
Display.
In above embodiment, user listens to the standard pronunciation of the sending of stereo set 6 first, is then used according to standard pronunciation
Family starts voluntarily to pronounce, and sound is transmitted to signal processing circuit after acquiring by sound transducer, at signal provided by the invention
Original subscriber's pronunciation can really be gone back by managing circuit, and be played back by stereo set 6, and user can be more clear, intuitively obtain
Know itself pronunciation.
Specifically, sound transducer is used to acquire the pronunciation signal of user, and pronunciation signal is transmitted to signal processing electricity
Road, signal processing circuit are transmitted to centre after successively carrying out signal amplification and signal filtering processing to the pronunciation signal received
Device is managed, the pronunciation signal received is transmitted to stereo set 6 and played out by central processing unit.
Specifically, image collecting device 3 fills nozzle type image transmitting to image procossing of the collected user in pronunciation
It sets, image processing apparatus carries out during image successively carries out being transmitted to after image filtering and image enhancement processing the image that receives
Processing unit is entreated, the image information received is transmitted to display equipment 2 and shown by central processing unit.
As shown in figure 3, sound transducer is used to acquire the pronunciation signal of user, the voice signal of acquisition is converted into voltage
Signal V0, and voltage signal V0 is transmitted to signal processing circuit, V1 be by signal processing circuit treated voltage signal,
Signal processing circuit includes signal amplification unit and signal filter unit, the output end of sound transducer and signal amplification unit
Input terminal connection, the output end of signal amplification unit are connect with the input terminal of signal filter unit, the output of signal filter unit
End is connect with the input terminal of central processing unit.
Specifically, signal amplification unit includes integrated transporting discharging A1-A2, field-effect tube VT1-VT2, capacitor C1-C3 and resistance
R1-R10。
Wherein, the output end of sound transducer is connect with one end of resistance R1, one end of resistance R1 also with field-effect tube VT1
Grid connection, the other end of resistance R1 connect with the inverting input terminal of integrated transporting discharging A1, the other end of resistance R1 also with capacitor
One end of C1 connects, and one end of resistance R2 is connect with the grid of field-effect tube VT2, the other end of resistance R2 also with resistance R9 one
End connection, the other end of resistance R2 are connect with the non-inverting input terminal of integrated transporting discharging A1, and one end ground connection of capacitor C2, capacitor C2's is another
One end is connect with the non-inverting input terminal of integrated transporting discharging A1, and the other end of capacitor C1 is connect with the output end of integrated transporting discharging A1, resistance
One end of R3 is connect with the output end of integrated transporting discharging A1, one end of capacitor C3 ground connection, and the other end of capacitor C3 is another with resistance R3's
One end connection, the other end of capacitor C3 are also connect with one end of resistance R4, and the other end of resistance R4 is connect with one end of resistance R5,
The other end of resistance R5 is connect with+5V power supply, and one end of resistance R6 is connect with the inverting input terminal of integrated transporting discharging A2, resistance R6's
The other end is connect with one end of resistance R5, and one end of resistance R6 is also connect with the drain electrode of field-effect tube VT1, one end of resistance R7 with
The non-inverting input terminal of integrated transporting discharging A2 connects, and the other end of resistance R7 is connect with+5V power supply, one end of resistance R7 also with field-effect
The drain electrode of pipe VT2 connects, and one end of resistance R8 is connect with -5V power supply, the source electrode of field-effect tube VT1 and the source of field-effect tube VT2
It is extremely connect with the other end of resistance R8, one end ground connection of resistance R10, the other end of resistance R10 and the grid of field-effect tube VT2
Connection, the other end of resistance R10 are also connect with one end of resistance R9, and the other end of resistance R9 and the output end of integrated transporting discharging A2 connect
It connects.
Signal filter unit include it is characterized in that, signal filter unit include resistance R11-R14, capacitor C4-C5 and
Integrated transporting discharging A3.
Wherein, the output end of signal amplification unit is connect with one end of resistance R11, the other end and capacitor C4 of resistance R11
One end connection, the other end of resistance R11 also connect with one end of resistance R12, and one end of capacitor C5 is grounded, and capacitor C5's is another
End is connect with the other end of resistance R12, and the other end of resistance R12 is also connect with the non-inverting input terminal of integrated transporting discharging A3, capacitor C4
The other end connect with the output end of integrated transporting discharging A3, one end of resistance R14 ground connection, the other end of resistance R14 and resistance R13's
One end connection, the other end of resistance R14 also connect with the inverting input terminal of integrated transporting discharging A3, the other end of resistance R13 with integrate
The output end of amplifier A3 connects, and the output end of integrated transporting discharging A3 and the input terminal of central processing unit connect, signal filter unit
Voltage signal V1 is transmitted to central processing unit.
In above embodiment, the noise of signal processing circuit drifts about within 1.7nV as 0.7 μ V/ DEG C, integrated transporting discharging
The model LT1797 of the model LTC2050HV of A1, integrated transporting discharging A2, the model of integrated transporting discharging A3 are LT1097, due to
The direct current offset of integrated transporting discharging A1 and drift will not influence the overall offset of circuit, so that circuit has extremely low offset
And drift.
In signal amplification unit, the resistance value of resistance R1 is 100K Ω, and the resistance value of resistance R2 is 100K Ω, the resistance of resistance R3
Value is 2K Ω, and the resistance value of resistance R4 is 2K Ω, and the resistance value of resistance R5 is 499 Ω, and the resistance value of resistance R6 is 499 Ω, resistance R7's
Resistance value is 1K Ω, and the resistance value of resistance R8 is 499 Ω, and the resistance value of resistance R9 is 1OK Ω, and the resistance value of resistance R10 is 10 Ω, field-effect
The model of pipe VT1-VT2 is LSK-389, and the capacitance of capacitor C1 is 0.02 μ F, and the capacitance of capacitor C2 is 0.02 μ F, capacitor
The capacitance of C3 is 0.22 μ F.
Signal amplification unit is missed with overcoming by input bring noise by being connected stable element with signal path
Difference.
In signal amplification unit, feed-in integrated transporting discharging A2 after field-effect tube VT1 forms low noise operational amplification electricity
Road, resistance R9 and resistance R10 provide feedback, and closed loop gain is arranged in the normal fashion (here, the amplification in signal amplification unit
1000) gain is.
In above embodiment, although field-effect tube VT1 has low-down noise characteristic, field-effect tube VT1's
It deviates and drifts about and is relatively high.Integrated transporting discharging A1 is chopper stabilized amplifier, that is to say, that in signal amplification unit, is integrated
Amplifier A1 overcomes the shortcoming as brought by field-effect tube VT1.Specifically, integrated transporting discharging A1 is inputted by measuring amplifier
Difference between end, and the difference of field-effect tube VT1 channel current minimum is adjusted, the drain electrode of field-effect tube VT1 also ensures
Integrated transporting discharging A1 in signal amplification unit can get above-mentioned offset.
Integrated transporting discharging A1 provides the electric current needed for it for field-effect tube VT1, so that the offset of field-effect tube VT1 is no more than 5 μ
V。
In addition, the Low-bias Current of integrated transporting discharging A1 will not obviously increase the bias current of entire 500pA amplifier.
It is in signal amplification unit, deviation calibration circuit is in parallel with the signal path of sensor, it can be realized broadband.
In specific test, when the input signal of sensor is 1mV, when the gain of signal amplification unit is 1000,
Signal is 29kHz bandwidth in 12 μ s rise time, and therefore, having has extremely excellent effect to sensor signal amplification.
The output signal of signal amplification unit is V01.
In signal filter unit, the resistance value of resistance R15-R20, the capacitance of capacitor C6-C7 be according to filtering demands into
Row setting.
The output signal of signal filter unit is V1, is analyzed:
Wherein, V02 is the voltage value of the intermediate node of resistance R11 and resistance R12, and s is Laplace operator；
Have again,
Then, frequency filtering ω0, filtered quality parameters Q,
Since the signal of sound transducer acquisition is faint current signal, thus signal amplification unit passes through integrated transporting discharging
A1-A2, field-effect tube VT1-VT2, capacitor C1-C3 and resistance R1-R10 amplify place to the voltage V0 that sound transducer exports
Reason, the signal amplification unit being made of integrated transporting discharging A1-A2, field-effect tube VT1-VT2, capacitor C1-C3 and resistance R1-R10 is only
Have offset within the drift of 0.7 μ V/ DEG C, 2 μ V, in 100pA bias current and the broadband 0.1Hz to 10Hz 1.7nV noise.Its
In, signal filter unit is using resistance R11-R14, capacitor C4-C5 and integrated transporting discharging A3 to by amplified voltage signal
Low-pass filtering treatment is carried out, to improve the precision to the detection of user's pronunciation.
Specifically, further include a comparing unit in central processing unit, a predetermined voltage threshold be stored in comparing unit,
The voltage value that voltage sensor will test is transmitted to comparing unit, if the voltage value that comparing unit receives is greater than or equal in advance
If voltage threshold, then central processing unit control power supply indicator 4 lights green light, if the voltage value that comparing unit receives is less than
Predetermined voltage threshold, then central processing unit control power supply indicator 4 lights amber light.
Specifically, the pronunciation signal and image information that receive are transmitted to storage equipment by central processing unit.
Specifically, display equipment 2 is LCD display device.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of intelligence pronunciation of English tutoring system, which is characterized in that the intelligence pronunciation of English tutoring system includes that input is set
Standby (1), display equipment (2), image collecting device (3), power supply indicator (4), reading data mouth (5), stereo set (6), sound
Sound sensor, signal processing circuit, image processing apparatus, power supply battery plate, voltage sensor, central processing unit and storage are set
It is standby；
Wherein, the input equipment (1) is set on the shell of the intelligent pronunciation of English tutoring system, and user passes through described defeated
Enter equipment (1) to the intelligent pronunciation of English tutoring system input English word, the display equipment (2), described image acquisition
Device (3), the power supply indicator (4), the reading data mouth (5) and the stereo set (6) are all set in the intelligence
On the shell of energy pronunciation of English tutoring system, described image acquisition device (3) is used to acquire nozzle type image of the user in pronunciation
Information；The sound transducer, the signal processing circuit, described image processing unit, the power supply battery plate, the voltage pass
Sensor, the central processing unit, the storage equipment are all set in the intelligent pronunciation of English tutoring system shell；
Wherein, the output end of the sound transducer is connect with the input terminal of the signal processing circuit, the sound transducer
For acquiring the pronunciation signal of user, the output end of described image acquisition device (3) and the input terminal of described image processing unit
Connection, the power supply battery plate provide electric power support for the intelligent pronunciation of English tutoring system, and the voltage sensor is for supervising
Survey the residual voltage signal of the power supply battery plate, the output of the output end of the signal processing circuit, the input equipment (1)
The output end at end, the output end of described image processing unit and the voltage sensor is defeated with the central processing unit
Enter end connection, the input of the input terminal, the input terminal, the storage equipment of the power supply indicator (4) of display equipment (2)
The input terminal of end and the stereo set (6) is connect with the output end of the central processing unit, and user passes through the number
The data in the storage equipment are read according to reading-port (5).
2. intelligence pronunciation of English tutoring system according to claim 1, which is characterized in that user passes through the input equipment
(1) English word is inputted, the English word of input is transmitted to the display equipment (2) and shown by the central processing unit
Show, first memory and second memory are stored in the central processing unit, is stored with standard in the first memory
Pronounce, standard nozzle type image is stored in the second memory, the central processing unit, will according to the English word of input
The standard pronunciation of the word stored in the first memory is transmitted to the stereo set (6) and plays out, the center
The standard nozzle type of the word stored in the second memory is transmitted to described by processing unit according to the English word of input
Display equipment (2) is shown that user voluntarily pronounces according to the English word of input, and the sound transducer is for acquiring user
Pronunciation signal, and pronunciation signal is transmitted to the signal processing circuit, the signal processing circuit is to the pronunciation received
Signal is transmitted to the central processing unit after carrying out signal processing, and the central processing unit passes the pronunciation signal received
It transports to the stereo set (6) to play out, nozzle type figure of the described image acquisition device (3) by collected user in pronunciation
As being transmitted to described image processing unit, described image processing unit is transmitted to institute after carrying out image procossing to the image received
Central processing unit is stated, the image information received is transmitted to the display equipment (2) and shown by the central processing unit
Show.
3. intelligence pronunciation of English tutoring system according to claim 1 or 2, which is characterized in that the sound transducer is used
The signal processing circuit, the signal processing circuit docking are transmitted in the pronunciation signal of acquisition user, and by pronunciation signal
The pronunciation signal received is transmitted to the central processing unit, the center after successively carrying out signal amplification and signal filtering processing
The pronunciation signal received is transmitted to the stereo set (6) and played out by processing unit.
4. intelligence pronunciation of English tutoring system according to claim 1 or 2, which is characterized in that described image acquisition device
(3) the nozzle type image transmitting by collected user in pronunciation is to described image processing unit, described image processing unit pair
The image received carries out being transmitted to the central processing unit, institute after image successively carries out image filtering and image enhancement processing
It states central processing unit the image information received is transmitted to the display equipment (2) and show.
5. intelligence pronunciation of English tutoring system according to claim 3, which is characterized in that the sound transducer is for adopting
The pronunciation signal for collecting user, is converted to voltage signal V0 for the voice signal of acquisition, and voltage signal V0 is transmitted to the letter
Number processing circuit, V1 are by the signal processing circuit treated voltage signal, and the signal processing circuit includes signal
Amplifying unit and signal filter unit, the output end of the sound transducer are connect with the input terminal of the signal amplification unit,
The output end of the signal amplification unit is connect with the input terminal of the signal filter unit, the output of the signal filter unit
End is connect with the input terminal of the central processing unit.
6. intelligence pronunciation of English tutoring system according to claim 5, which is characterized in that the signal amplification unit includes
Integrated transporting discharging A1-A2, field-effect tube VT1-VT2, capacitor C1-C3 and resistance R1-R10；
Wherein, the output end of the sound transducer is connect with one end of resistance R1, one end of resistance R1 also with field-effect tube VT1
Grid connection, the other end of resistance R1 connect with the inverting input terminal of integrated transporting discharging A1, the other end of resistance R1 also with capacitor
One end of C1 connects, and one end of resistance R2 is connect with the grid of field-effect tube VT2, the other end of resistance R2 also with resistance R9 one
End connection, the other end of resistance R2 are connect with the non-inverting input terminal of integrated transporting discharging A1, and one end ground connection of capacitor C2, capacitor C2's is another
One end is connect with the non-inverting input terminal of integrated transporting discharging A1, and the other end of capacitor C1 is connect with the output end of integrated transporting discharging A1, resistance
One end of R3 is connect with the output end of integrated transporting discharging A1, one end of capacitor C3 ground connection, and the other end of capacitor C3 is another with resistance R3's
One end connection, the other end of capacitor C3 are also connect with one end of resistance R4, and the other end of resistance R4 is connect with one end of resistance R5,
The other end of resistance R5 is connect with+5V power supply, and one end of resistance R6 is connect with the inverting input terminal of integrated transporting discharging A2, resistance R6's
The other end is connect with one end of resistance R5, and one end of resistance R6 is also connect with the drain electrode of field-effect tube VT1, one end of resistance R7 with
The non-inverting input terminal of integrated transporting discharging A2 connects, and the other end of resistance R7 is connect with+5V power supply, one end of resistance R7 also with field-effect
The drain electrode of pipe VT2 connects, and one end of resistance R8 is connect with -5V power supply, the source electrode of field-effect tube VT1 and the source of field-effect tube VT2
It is extremely connect with the other end of resistance R8, one end ground connection of resistance R10, the other end of resistance R10 and the grid of field-effect tube VT2
Connection, the other end of resistance R10 are also connect with one end of resistance R9, and the other end of resistance R9 and the output end of integrated transporting discharging A2 connect
It connects.
7. intelligence pronunciation of English tutoring system according to claim 6, which is characterized in that the signal filter unit includes
It is characterized in that, the signal filter unit includes resistance R11-R14, capacitor C4-C5 and integrated transporting discharging A3；
Wherein, the output end of the signal amplification unit is connect with one end of resistance R11, the other end and capacitor C4 of resistance R11
One end connection, the other end of resistance R11 also connect with one end of resistance R12, and one end of capacitor C5 is grounded, and capacitor C5's is another
End is connect with the other end of resistance R12, and the other end of resistance R12 is also connect with the non-inverting input terminal of integrated transporting discharging A3, capacitor C4
The other end connect with the output end of integrated transporting discharging A3, one end of resistance R14 ground connection, the other end of resistance R14 and resistance R13's
One end connection, the other end of resistance R14 also connect with the inverting input terminal of integrated transporting discharging A3, the other end of resistance R13 with integrate
The output end of amplifier A3 connects, and the output end of integrated transporting discharging A3 is connect with the input terminal of the central processing unit, the signal
Voltage signal V1 is transmitted to the central processing unit by filter unit.
8. intelligence pronunciation of English tutoring system according to claim 1, which is characterized in that in the central processing unit also
Including a comparing unit, a predetermined voltage threshold, the electricity that the voltage sensor will test are stored in the comparing unit
Pressure value is transmitted to the comparing unit, if the voltage value that the comparing unit receives is greater than or equal to predetermined voltage threshold,
The central processing unit controls the power supply indicator (4) and lights green light, if the voltage value that the comparing unit receives is small
In predetermined voltage threshold, then the central processing unit controls the power supply indicator (4) and lights amber light.
9. intelligence pronunciation of English tutoring system according to claim 1, which is characterized in that the central processing unit will connect
The pronunciation signal and image information received is transmitted to the storage equipment.
10. intelligence pronunciation of English tutoring system according to claim 1, which is characterized in that the display equipment (2) be
LCD display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910598526.7A CN110189559A (en) | 2019-07-04 | 2019-07-04 | A kind of intelligence pronunciation of English tutoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910598526.7A CN110189559A (en) | 2019-07-04 | 2019-07-04 | A kind of intelligence pronunciation of English tutoring system |
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| CN110189559A true CN110189559A (en) | 2019-08-30 |
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| CN201910598526.7A Withdrawn CN110189559A (en) | 2019-07-04 | 2019-07-04 | A kind of intelligence pronunciation of English tutoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706527A (en) * | 2019-11-11 | 2020-01-17 | 郑州财经学院 | Intelligent English teaching system |
| CN114708642A (en) * | 2022-05-24 | 2022-07-05 | 成都锦城学院 | Business English simulation training device, system, method and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200724104A (en) * | 2005-12-30 | 2007-07-01 | Ind Tech Res Inst | A stethoscope capable of eliminating unwanted sounds and method thereof |
| CN103281653A (en) * | 2013-06-26 | 2013-09-04 | 何林 | High-fidelity field-effect tube class-A power amplifier |
| KR20140078810A (en) * | 2012-12-18 | 2014-06-26 | 주홍찬 | Apparatus and method for learning rhythm pattern by using native speaker's pronunciation data and language data. |
| CN106849901A (en) * | 2016-12-28 | 2017-06-13 | 宁波斯凯勒智能科技有限公司 | A kind of audio filter circuit |
| CN206431868U (en) * | 2016-12-19 | 2017-08-22 | 临沂大学 | A kind of instrument for correcting pronunciation of English |
| CN207443114U (en) * | 2017-08-04 | 2018-06-01 | 深圳市东明炬创电子有限公司 | A kind of digital power amplifier |
| CN108645477A (en) * | 2018-08-27 | 2018-10-12 | 南京梵科智能科技有限公司 | A kind of reservoir level intelligent monitor system |
| CN207977012U (en) * | 2017-10-30 | 2018-10-16 | 华蓥市红军小学 | A kind of intelligence English teaching tool |
| CN109302579A (en) * | 2018-11-12 | 2019-02-01 | 苏州龙佰奇机电科技有限公司 | A kind of video conference place intelligent monitor system |
-
2019
- 2019-07-04 CN CN201910598526.7A patent/CN110189559A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200724104A (en) * | 2005-12-30 | 2007-07-01 | Ind Tech Res Inst | A stethoscope capable of eliminating unwanted sounds and method thereof |
| KR20140078810A (en) * | 2012-12-18 | 2014-06-26 | 주홍찬 | Apparatus and method for learning rhythm pattern by using native speaker's pronunciation data and language data. |
| CN103281653A (en) * | 2013-06-26 | 2013-09-04 | 何林 | High-fidelity field-effect tube class-A power amplifier |
| CN206431868U (en) * | 2016-12-19 | 2017-08-22 | 临沂大学 | A kind of instrument for correcting pronunciation of English |
| CN106849901A (en) * | 2016-12-28 | 2017-06-13 | 宁波斯凯勒智能科技有限公司 | A kind of audio filter circuit |
| CN207443114U (en) * | 2017-08-04 | 2018-06-01 | 深圳市东明炬创电子有限公司 | A kind of digital power amplifier |
| CN207977012U (en) * | 2017-10-30 | 2018-10-16 | 华蓥市红军小学 | A kind of intelligence English teaching tool |
| CN108645477A (en) * | 2018-08-27 | 2018-10-12 | 南京梵科智能科技有限公司 | A kind of reservoir level intelligent monitor system |
| CN109302579A (en) * | 2018-11-12 | 2019-02-01 | 苏州龙佰奇机电科技有限公司 | A kind of video conference place intelligent monitor system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706527A (en) * | 2019-11-11 | 2020-01-17 | 郑州财经学院 | Intelligent English teaching system |
| CN114708642A (en) * | 2022-05-24 | 2022-07-05 | 成都锦城学院 | Business English simulation training device, system, method and storage medium |
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Application publication date: 20190830 |