CN2333049Y - Intelligence foreign language learning machine - Google Patents

Abstract

The utility model relates to a digital foreign language auxiliary learning device controlled by a single chip computer. The digital foreign language auxiliary learning device controlled by a single chip computer is provided with a digital voice analyzing and synthesizing circuit, a dynamic memory, a control circuit of a single chip computer, a voice collecting circuit, an audio frequency amplifying outputting circuit, a voice playing control circuit, and a voice segment recognizing circuit. A voice processing chip is provided with a CPU interface and a DRAM interface which are respectively connected with a CPU and a DRAM. The utility model has very strong functions in the aspects of assisting word memory and strengthening the training of listening and reading and can provide overlength voice segment memory space for 128 seconds, and a user can do voice segment repeating practice, reading practice following the sound, and reading contrasting practice after the sound. The utility model can be used for word circulation, contrast, spelling, dictating memory, etc.

Description

Intelligent foreign language learning machine

The utility model relates to a kind of by monolithic processor controlled digitizing foreign language auxiliary study device.

Foreign language is as a language, and the final purpose of study is the ability with " listen, say, reading and writing ", and wherein, the training of " listen, say " two kinds of technical ability usually makes numerous foreign language learners hang back.The CN2062477U patent provides a kind of repetitive cycling playback, voice speed governing learning machine, and it is made of IO interface, language processor, dynamic storage, storbing gate, sound discharge road, programming controller.The CN2059007U patent provides a kind of multifunctional language learning machine, and it is made up of voice amplifying circuit, level comparison circuit, integrating circuit, monostable circuit, pulse delay circuit, driving circuit, sound discharge road and ON-OFF control circuit.The CN2099356U patent provides a kind of voice reading following machine, and it is made up of speech detection amplifying circuit, comparison shaping circuit, timing circuit, on-off circuit and auxiliary circuit etc.The CN2097428U patent provides a kind of computer language study machine, and it is made up of the control circuit that comprises single-chip microcomputer, the speech processing circuit that comprises pronounciation processing chip, speech data storage circuit 3 parts and data bus thereof, address bus, control bus.

The purpose of this utility model be to provide a kind of with one chip microcomputer as control center, adopt digitize voice process chip and dynamic storage to carry out the computer speech processor of speech analysis, synthetic and storage.

The utility model is provided with digitize voice analysis and combiner circuit, dynamic storage, single chip machine controlling circuit, voice collecting circuit, audio amplification output circuit, playback control circuit, paragraph identification circuit and power supply.Digitize voice analysis and combiner circuit are made up of the pronounciation processing chip oscillatory circuit with cpu i/f and DRAM interface, the cpu i/f of pronounciation processing chip is connected with the single-chip microcomputer of single chip machine controlling circuit, the DRAM interface of pronounciation processing chip is connected with dynamic storage, and the oscillatory circuit interface of pronounciation processing chip connects oscillatory circuit.The speech output end of the preposition amplification input of the acoustic pickup of pronounciation processing chip termination voice collecting circuit.The bandpass filter output port of pronounciation processing chip connects the audio signal input end of audio amplification output circuit.Single chip machine controlling circuit is made up of single-chip microcomputer (carrying program storage, data-carrier store), oscillatory circuit and keyboard, and the port of single-chip microcomputer is connected with the reference voltage circuit of pronounciation processing chip, playback control circuit, keyboard, aanalogvoltage comparator circuit respectively.The voice collecting circuit by lift sound device and biasing circuit, analog signal input circuit is formed, playback control circuit is by Single-chip Controlling.The paragraph identification circuit is made up of aanalogvoltage comparator circuit and reference voltage circuit that single-chip microcomputer carries.

Pronounciation processing chip has functions such as the preposition amplification of MIC, digitization of speech signals analysis, synthetic, audio signal output bandpass filtering; Carry out the corresponding command operation by cpu i/f; Finish data access and the work of DRAM address flush by the DRAM interface.Oscillatory circuit provides control timing for chip.DRAM plays the temporary effect of voice as information carrier.Single chip machine controlling circuit is finished work such as man-machine conversation, command interpretation, voice segment, operation control, is the soul of whole device.The voice signal of device is imported by two kinds of approach: i.e. MIC input and simulating signal are directly imported, and two parts switch by Single-chip Controlling.Audio frequency amplification and output circuit also can be monitored sound recording when recording except that reaching the normal playback function.Playback control circuit comprises that playback and playback stop control circuit, and complete machine type foreign language learning machine is controlled by motor controlling integrated circuit by single-chip microcomputer; Pocket foreign language learning machine is external with miniature radio-recorder power, is powered to miniature radio cassette player by pocket foreign language learning machine, reaches above control purpose by controlling miniature radio-recorder power.The paragraph identification circuit is provided with paragraph identification reference voltage, and the paragraph of finishing input speech signal by the aanalogvoltage comparator circuit detects and identification.The utility model can be provided with the sound playing circuit, as the sound source of voice signal analog input.Sound source also can be served as by common miniature radio cassette player.

The utility model is at auxiliary vocabulary memorization and strengthen and to have very strong function aspect " listen, say " skill training: 128 seconds overlength voice storage spaces are provided, can reach the purpose of the unlimited repetition playback of not rewinding; Can follow and read and practise with reading contrast; Have automatic paragraph identification and positioning function; Scalable output word speed; Can carry out word circulation memory, contrast memory, spelling memory and dictation memory.

This device is except that constituting the complete machine type foreign language learning machine with cartridge tape deck and control circuit, also can independently exist, constitute pocket foreign language learning machine, finish corresponding operating by common miniature radio cassette player external power interface and earphone interface, make common miniature radio cassette player be expanded into powerful foreign language learning machine, remedied the deficiency of common radio cassette player function singleness.

Fig. 1 is a theory diagram of the present utility model.

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

Implement side: as Fig. 1, the utility model is provided with digitize voice analysis and combiner circuit 1, dynamic storage 2, single chip machine controlling circuit 3, voice collecting circuit 4, audio amplification output circuit 5, playback control circuit 6, paragraph identification circuit 7 and power supply.Referring to Fig. 2, digitize voice analysis and combiner circuit 1 are made up of pronounciation processing chip T1, oscillatory circuit X01 and auxiliary circuit.Dynamic storage 2 is made up of 1～4 MN41256 integrated circuit U1.Single chip machine controlling circuit 3 is made up of single-chip microcomputer T2 (carrying program storage, data-carrier store, analog voltage comparator) and keyboard LINK.Voice collecting circuit 4 is made up of acoustic pickup M2 and biasing circuit (electric capacity E3, circuit R3), MICIN socket Z and electric capacity E4.The bandpass filter output terminal (19) of pronounciation processing chip T1 connects audio amplification output circuit 5 (integrated circuit U7).

The extensive pronounciation processing chip T6668 of monolithic takes orders by the CPU IO interface and gives operation information in the slice, finishes corresponding control operation: T6668 and utilizes dynamic storage KN41256 as the digitized voice signal memory carrier.Finish data access and DRAM address flush by the DRAM IO interface, four MN41256 can constitute the 1M storer, calculate with the 8K sampling rate, can store 128 seconds voice messagings; The ceramic vibrator oscillatory circuit constitutes oscillation circuit in crystal oscillator X01 and capacitor C 2, C3 and the T6668 sheet, provides control timing to T6668; The T6668 voice signal is by preposition amplification input end 16 inputs of MIC, after preposition amplification, the oscillator signal of output terminal 13 output signals for swinging up and down at this center of 1/2VD D, this signal is directly imported by the sound input end 22 of ADM phonetic analysis/combiner circuit, ADM analyzes later digitized signal and is stored by DRAM, ADM synthetic speech signal 21 is imported by bandpass filter input end 20 through resistance R 2, by 3 inputs of note amplifier U7 (LM386) input end, voice signal outputs to loudspeaker and earphone jack by note amplifier U7 (LM386) output terminal 5 through diode D11 to the later signal of filtering through decoupling capacitor E1 and potentiometer W4.Capacitor C 6, C7 and E2 are coupling capacitance.

Present embodiment with ATMEL single-chip microcomputer T2 (2051) as control module, this single-chip microcomputer T2 has the 2K flash memory, 128 byte RAM also carry analog voltage comparator, and a slice 2051 adds oscillatory circuit (X02, C1, C4) and keyboard scanning circuit has just constituted complete single chip machine controlling circuit and paragraph identification circuit.

T2 (2051) resets, and wall meets electrochemical capacitor E9, diode D1 and resistance R 7 is formed automatic power-on reset circuit, energized moment, electric capacity E9 negative terminal is a high level, diode D1 reverse bias, electric capacity E9 is by resistance R 7 discharges, discharge time constant is bigger, and 2051 reset terminal high level are held time and substantially exceeded two machine cycles, finish reset operation.

(2051) pins 32 of T2 are as the playback control pin; pocket learning machine control circuit principle is seen Fig. 2: resistance R 5; R4 and triode N1; N2 constitutes amplifying circuit provides relay J K Control current; diode D2 provide current protection; when JK disconnects; pocket learning machine is powered to miniature radio cassette player by the POWER jack; miniature radio cassette player playback; voice signal is directly imported by T1 (T6668) voice signal input end 16 through electric capacity E4 by miniature radio cassette player earphone jack; when the JK adhesive; the POWER outage; miniature radio cassette player stops playback; resistance R 3 connects high level simultaneously; the MIC circuit working, voice signal is by MIC circuit input T1 (T6668) voice signal input end 16.

P1.0 among the T2 (2051), the P1.1 pin is respectively the forward and reverse input wall of analog voltage comparator, P3.6 is built-in, connect the analog voltage comparator output terminal, P1.0 connects ADM analysiss/combiner circuit input wall 22 among the T1 (T6668), and resistance R 8 and potentiometer W3 formation voltage divider link to each other with P1.1 and provide reference voltage to it, matching program can detect quiet in the sound recording process, thereby reaches the purpose of paragraph identification.

Seven data lines can be connected into 3 * 4 computer keyboards among the T2 (2051).Keyboard LINK connection jaws links to each other with T2 (2051).

Claims (1)

1, intelligent foreign language learning machine is characterized in that being provided with digitize voice analysis and combiner circuit, dynamic storage, single chip machine controlling circuit, voice collecting circuit, audio amplification output circuit, playback control circuit, paragraph identification circuit and power supply.Digitize voice analysis and combiner circuit are made up of pronounciation processing chip and oscillatory circuit with cpu i/f and DRAM interface, the cpu i/f of pronounciation processing chip is connected with the single-chip microcomputer of single chip machine controlling circuit, the DRAM interface of pronounciation processing chip is connected with dynamic storage, the oscillatory circuit interface of pronounciation processing chip connects oscillatory circuit, the speech output end of the preposition amplification input of the acoustic pickup of pronounciation processing chip termination voice collecting circuit, the bandpass filter output port of pronounciation processing chip connects the audio signal input end of audio amplification output circuit; Single chip machine controlling circuit is made up of single-chip microcomputer, oscillatory circuit and keyboard, and the port of single-chip microcomputer is connected with pronounciation processing chip, playback control circuit, keyboard and the reference voltage circuit of aanalogvoltage comparator circuit respectively; The voice collecting circuit is made up of acoustic pickup and biasing circuit, analog signal input circuit; Playback control circuit is by Single-chip Controlling; The paragraph identification circuit is made up of aanalogvoltage comparator circuit and reference voltage circuit.

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