CN2261658Y - Digital recorder for learning foreign languages - Google Patents

Abstract

The utility model relates to a recording apparatus which uses a semiconductor memory as a carrier and is designed by the technology of speech synthesis, and is particularly adequate to be used for foreign language learning. The utility model comprises a control section, a speech processing section, a speech storage section and a power supply section. The utility model is characterized in that the control section whose data output terminal is connected with a display and a keyboard is composed of an SCM and a program memory control section; the speech processing section which is respectively connected with the control section, the speech storage section and a coding / decoding section is composed of a speech processing chip; the speech storage section is composed of the semiconductor memory; the coding / decoding section is composed of a coding / decoding integrated-circuit.

Description

Digital recording foreign language learning machine

The utility model relate to a kind of with semiconductor memory as carrier, utilize the sound pick-up outfit of speech synthesis technique design, be particularly suitable for foreign language learning and use.

At present, most people use the foreign language studying of tape sound machine, in the process of Teaching Listening Comprehension or student training hearing, need frequent example band, not only be difficult to find accurately sentence or the position of section on tape, also accelerated the wearing and tearing of machine, both waste teacher or student's time, also disperseed the study notice.If use walkman, because the no rewind functions that has, study is got up just more difficult.The listening and speaking machine of Chu Xianing can be realized without rewinding diplacusis simple sentence or paragraph in recent years, with the function of reading to contrast; But still there are record length short only tens seconds in it, can not break away from shortcomings such as blattnerphone, and the problem that is difficult to find accurately sentence or the position of section on tape fundamentally is not resolved yet, brings many inconvenience to the academics and students.Along with the development of technology such as semiconductor technology and data compression, phonetic synthesis, having occurred with the semiconductor memory is the sound pick-up outfit of carrier, but its utilization is not also had at foreign language Special Equipment in study.

The purpose of this utility model provides a kind of digital audio tape that is suitable for foreign language learning, to solve the defective that prior art exists.

The utility model is achieved in that

1. digital recording foreign language learning machine, comprise control section, speech processes part, voice storage area and power unit, it is characterized in that constituting control section by single-chip microcomputer and program storage, its data output end connects display and operation keyboard, pronounciation processing chip constitutes the speech processes part, it links to each other with voice storage area and coding-decoding part branch with control section respectively, and the voice storage area is made of semiconductor memory, and coding-decoding part is made of coding-decoder ic.

2. preceding paragraph 1 described digital recording learning machine is characterized in that also comprising mouthful record voice and joins machine phonetic entry port outward, comprises amplifier, microphone, loudspeaker and plug connector.

3. preceding paragraph 1 described digital recording learning machine is characterized in that described operation keyboard is 4 * 4 matrix keyboards or free-standing keyboard.

4. preceding paragraph 1 described digital recording learning machine is characterized in that described display is three and half LCD MODULE.

The utility model has following advantage compared with the prior art:

1. prolongation record length makes digital recording for up to 100 minutes.Digital recording general tens seconds only in the prior art.

2. can arbitrarily access record arbitrary sentence or a section content is carried out diplacusis, with reading.

3. playing speed is freely set, and has made things convenient for the foreign language fan of different hearing levels.

4. break away from sound-track engraving apparatus fully or walkman is practised.

5. is furnished with the liquid crystal display displays segment number.

6. volume is little, when using dry cell power supply, convenient carrying is arranged.

7. if join adjunct circuit outward, can be advantageously used in foreign language teaching.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 is the circuit theory diagrams of the utility model embodiment.

As shown in Figure 1, the utility model comprises operation keyboard A, display B, Single-chip Controlling portion C, speech processes part D, coding-decoding part E, voice storage area F, mouth is recorded voice and is joined machine phonetic entry G outward, sound signal amplification output circuit H, power unit I.

The physical circuit of each several part is illustrated in the accompanying drawing 2, below describes respectively.

Key input part A comprises two kinds of forms.A kind of form is 4 * 4 matrix keyboards, and another kind of form is free-standing button.The button part also adopts difunctional key mode.It is as follows that (circuit is seen Fig. 2 (a)) respectively numbers keypress function: 0～9-section, and the 10-recording, 11-simple sentence/section diplacusis, the 12-sentence continues, 13-is with reading/follow to read contrast, and the 14-word speed is accelerated/slowed down, and the 15-volume increases/reduces, 16-stops/deleting, and 17-suspends, and 18-is keying up and down.

Display B adopts three and half LCD MODULE FRS-1200PG (IC1) (circuit is seen Fig. 2 (a)).

Control section C adopts 80C31 (IC2) single-chip microcomputer.By eight D-latch 74HC373 (IC3), the 427C32EPROM of external 4K (IC4) is as program storage.Data space uses the RAM district of 128 bytes of IC2 inside.Oscillatory circuit adopts the 12MHZ crystal oscillator.Reset circuit adopts electrify restoration circuit.Low 4 row outputs that are used for keyboard scan of P1 mouth, high 4 row inputs that are used for keyboard scan, the output of double as video data.High 4 controls that are used to show bit address of P2 mouth.From P3.0 output square-wave signal control display circuit.With being connected of IC5 pronounciation processing chip D6471A-11 in, the PO mouth links to each other with the data line of IC5, is used for transmit mode and order.P3.1 links to each other with the HI of IC5, is used for the selection of the high low byte of 16 states or order.P3.2 links to each other with the ACK of IC5, needs the interrupt request input end of return state word as IC5.WR links to each other with HSTRD with the HSTWR of IC5 respectively with RD, is used for the read-write control to IC5.(circuit is seen Fig. 2 (a)).

Speech processes part D adopts digital signal processing chip D6471A-11 (IC5).IC5 is a programmable chip, can realize reaching 100 minutes recording by software development, the playback that the optional position begins, word speed adjustment, control volume, functions such as voice cancellation.Its pin assignment is as follows: the HSTDBO-HSTDB7 that links to each other with single-chip microcomputer IC2 is as the I/O of state/order.ACK is as the request end to main frame input state word.HI/LO is used for the high low byte control end of 16 words.HSTRD, HSTWR are used for read-write control.XOUT, XIN are used for external crystal oscillating circuit, are set to 36.864MHZ.The MDBO-MDB7 that has that links to each other with IC6 storage chip 29NO40 is used for the I/O of data, and CEO-CE3 is used for the sheet choosing, and FLRD, FLWR are used for read-write control, and CLE, ALE can hold as the beginning.What link to each other with IC7 coder-decoder PT3054 has a DRO, and DXO is used for the I/O of signal, and FSYNC is used to export synchronizing pulse, and SCLK is used for the output of clock signal.RESET and PDN have strict sequential control, power on after delay circuit prolong chi 50ms after PDN become high level, RESET becomes high level 5 μ s at PDN and adopts electrify restoration circuit to reset.(circuit is seen Fig. 2 (b).

Coding-decoding part E adopts PT3054 (IC7), can realize A/D and D/A conversion.Inside has the transmitting terminal input amplifier, and the power amplifier of receiving end can pass through the programming Control amplifier gain, thus the control volume.Its pin assignment is as follows: VCCA as simulating signal+the 5V power supply, VBBA as simulating signal-the 5V power supply.GNDA is simulation ground.DX is used for the output terminal of A/D, and DR is used for the input end of D/A.MCLK receives the major clock from IC5, and BCLK is a change over clock, needs synchronous with MCLK.MCLK is divided into MCLKX (transmission) and MCLKR (reception), and BCLK is divided into BCLKX (transmission) and BCLKR (reception), general MCLKR, BCLKR ground connection, and MCLKX, BCLKX are used for receiving and sending.FSX, FER receive the synchronizing signal from IC5.VFX+ is the in-phase end of input amplifier, general ground connection; VFX-is an end of oppisite phase, is used for input speech signal.GSX is the output terminal of input amplifier, outreaches feedback resistance.VFRO is as the output terminal of receiving end power amplifier.(circuit is seen Fig. 2 (c)).

Voice storage area F adopts the storage chip 29NO40 (IC6) of 4Mbit, is used for storing digital information.IC5 can be with 4 29NO40 at most, can realize reaching 100 minutes voice record.(circuit is seen Fig. 2 (b)).

Mouth is recorded voice and is joined machine voice signal input G outward.The mouth record realizes by MIC.Joining the input of machine voice signal outward is by earphone jack voice signal to be taken into.(circuit is seen Fig. 2 (c)).

Sound signal amplification output circuit H adopts LM386 integrated amplifier (IC8), can use earphone or loudspeaker output speech.(circuit is seen Fig. 2 (c)).

Power unit I, external 6VDC (4 joint 1.5V dry cell).This power supply provides three kinds of voltages: a kind of VCC of being (+5V), be used for derived digital signal; A kind of be VCCA (+5V), be used for simulation signal generator; A kind of is that VBBA (5V), is used for simulation signal generator.Positive supply adopts diode step-down and capacitor filtering, output 1A electric current.Negative supply adopts (IC9) 7660DC-DC voltage polarity reversal device and diode mu balanced circuit.(circuit is seen Fig. 2 (d)).

Also have adjunct circuit in addition, be used for electronic teaching, this adjunct circuit provides: 6V stabilized voltage supply and rated power are the audio amplifier circuit of 36W.Stabilized voltage supply adopts IC10 integrated voltage stabilizer 7806, and audio frequency amplifies employing ICM fool 175.(circuit is seen Fig. 2 (e)).

The utility model can be realized higher performance and a lot of specific function by the establishment watchdog routine, is particularly suitable for the study and the teaching of foreign language.Description below in conjunction with the utility model embodiment principle of work further specifies the utility model.

The pairing numbering of various functions and voice content is selected in the operation of employing key mode.With three and half the liquid crystal display circuit prompting playback or the pairing segment number of recording.When storer has been expired or stored 128 sections contents, can point out the user to be handled.

Recording of the present utility model can realize dual mode, and a kind of is mouth record by microphone MIC, and another kind is from the earphone jack of sound-track engraving apparatus or walkman to take out voice signal in tape playback process by the earphone jack and the plug of joining outward.This function makes (IC5) D6471A-11 be operated in record type and be achieved by programming.Adopt digital voice operated switch recording technology, promptly sending recording order after, when signal, begin recording automatically, and, when no signal, stop recording automatically, and the corresponding state position is resetted position, correlation behavior position.The unit of recording can be reduced into simple sentence like this, and can to the record statement regularly, when every words finish, the register content be stored among the RAM, by the timer of (IC2) 80C31 to indicate the time of each.This time tag will be used for the diplacusis of simple sentence, with reading.In order to distinguish different recording sections, in each recording beginning, read in segment number, and be stored among the RAM, on display, show simultaneously.Like this, will deposit successively among the RAM each time tag in the segment number of recording and the section.In addition, can be implemented in the process of recording by programming and to monitor, and judge whether storage is full, when storage is full, display will show that " LOBAT:000 " is to point out.When pressing stop key, then stop recording.

During operation, by " record button ", device to be shown begins recording when showing segment number, and the length of recording can be simple sentence by user oneself control, also can be one section, several sections statements or entire article, then stops recording when pressing " stop key ", shows blanking.

The voice storage can reach the memory capacity of 16Mbit, the longest recording 100 minutes.Each End of Tape can be given the context number of recording automatically, and once recording is called one section, and its content-length can change, and can be divided into 128 sections (0～127 sections) altogether.

Diplacusis comprises whole section diplacusis and simple sentence diplacusis.Make (IC5) D6471A-11 be operated under the playback modes and be achieved by programming.After sending reproduction command, in the playback process, read in status word, whether detect arrive section tail,, then send reproduction command automatically again, promptly realize playback as if not sending to section tail when ceasing and desisting order.Playback until send cease and desist order till.

If forms by several sentences in one section word of being recorded, the user want to carry out many diplacusis, this just need utilize the time tag of each and sign current demand signal that this mode the provided status word apart from the side-play amount of section head.In each when beginning sentence, open timer, and the protocol sentence prime minister when the register content is identical with time tag, shows that this in short is through with for the side-play amount of section head, writes down the side-play amount of end of the sentence (being next beginning of the sentence) with respect to section head.If do not press " playback continuation key ", then retransmit the reproduction command that has the beginning of the sentence side-play amount, carry out this sentence of diplacusis, until pressing " playback continuation key ", continue the diplacusis of next.In the diplacusis process, if press " Pause key ", then will send to suspend and end order, stop playback, until " Pause key " the continuation playback that resets.In the diplacusis process,, show blanking if pressing " stop key " will stop playback.In the diplacusis process, if press " accelerating/slow down key ", speed governing is realized in the speed control position in the reproduction command capable of automatic changing.

In the operation, press " simple sentence/section diplacusis key " earlier, and the input segment number, can see that then display shows the paragraph segment number of putting.In the diplacusis process, can press " Pause key ", " accelerating/slow down key " is to reach different purposes.In the simple sentence diplacusis, need press " playback continuation key " and can continue the playback of next.When pressing " stop key ", will stop the playback process, show blanking.

The word speed adjustment can be according to the hearing level of oneself, by key mode, and the playback word speed of accelerating or slow down, setting range is 50%～200% of a former record word speed.

The utlity model has special following and read function.With read to be meant simple sentence with reading, can be divided into reading and following and read to contrast dual mode.Basic identical with the simple sentence diplacusis, just when finishing for every, this sentence is retimed, carry out pause command simultaneously, this section period can be used for, detecting " continuation playback button ", if do not press after treating regularly to finish with reading, then repeat aforesaid operations, after this key is pressed, continue next statement.Different with the simple sentence diplacusis is after in short having put, change record type over to, send the recording order, record in mouth record mode, speech sends reproduction command after finishing again, reset this a former sound and a mouthful sound recording sound, to pronounce comparison and correcting pronunciation mistakes, treat approbation after, can press " continuation playback button " and continue next statement.Operating process and diplacusis are roughly the same.

When the display prompts canned data expires, can utilize the paragraph delete function to leave out storage signal on the speech memory, so that upgrade recording substance.Also can utilize this function to leave out unnecessary paragraph.During operation, press " delete key ", and import the segment number that will delete, then main frame sends delete command, can leave out this section, and other segment number subtracts 1 greater than the paragraph numbering of this section.This operation repeatedly can be left out any multistage.

The setting range of volume control is unit with 2dB ,-42dB～+ 16dB, volume also can be eliminated.During operation, in the process of recording, playback, all can whenever click and adjust a unit by " volume increases/reduce key ", button can be adjusted volume on a large scale continuously.

When pressing " stop key ", main frame sends ceases and desist order, and (IC5) D6471A-11 is operated under the blank operation mode, and shows blanking.

More than the just description of an embodiment of the utility model is not to qualification of the present utility model, and those skilled in the art can carry out various improvement in claims institute restricted portion.

Claims (4)

1. digital recording foreign language learning machine, comprise control section (C), speech processes part (D), voice storage area (F) and power unit (I), it is characterized in that constituting control section by single-chip microcomputer (IC2) and program storage (IC4), its data output end connects display (IC1) and operation keyboard (B); Pronounciation processing chip (IC5) constitutes the speech processes part, and it links to each other with voice storage area and coding-decoding part (E) with control section respectively; The voice storage area is made of semiconductor memory (IC6), and coding-decoding part is made of coding-decoder ic (IC7).

2. digital recording learning machine as claimed in claim 1 is characterized in that also comprising mouthful record voice and joins machine phonetic entry port outward, comprises amplifier (IC8), microphone, loudspeaker and plug connector.

3. digital recording learning machine as claimed in claim 1 is characterized in that described operation keyboard is 4 * 4 matrix keyboards or free-standing keyboard.

4. digital recording learning machine as claimed in claim 1 is characterized in that described display is three and half LCD MODULE.

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