CN104835496B - A kind of high definition speech recognition system based on Linear Driving - Google Patents
A kind of high definition speech recognition system based on Linear Driving Download PDFInfo
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Abstract
The high definition speech recognition system based on Linear Driving that the invention discloses a kind of, it is by voice acquisition module (8), main control unit (1), sound bank (2), characteristic extracting module (3), sound identification module (4), the endpoint detection module (5) being connected with main control unit (1), the audio coding module (7) being connected with voice acquisition module (8), and preprocessing module (6) composition being connected with audio coding module (7), it is characterised in that：Linear Driving module (9) is also serially connected between preprocessing module (6) and endpoint detection module (5)；The identification distance of the present invention is remote, people do not need in close proximity during identification, as long as it is i.e. recognizable to make a sound the present invention a long way off, simultaneously, the effect that the present invention passes through Linear Driving module, continuously voice signal can be handled, avoid occurring desultory phenomenon during speech recognition, influence the accuracy of identification of the present invention.
Description
Technical field
The present invention relates to a kind of speech recognition system, in particular to a kind of high definition speech recognition systems based on Linear Driving
System.
Background technology
Speech recognition starts to move towards market from laboratory in recent years as a cross discipline.It is continued to develop in science and technology
Today, speech recognition technology have entered industry, household electrical appliances, communication, automotive electronics, medical treatment, home services, consumer electronics production extensively
The every field such as product bring huge change to people’s lives and production.However, voice used in currently on the market is known
Other system its voice signal in identification process is susceptible to desultory phenomenon, and identifying system is caused wrong identification occur
Situation has brought prodigious trouble.
Invention content
It is an object of the invention to overcome speech recognition system traditional at present its voice signal in identification process to be easy
There is desultory phenomenon, identifying system is caused the defect of wrong identification occur, a kind of high definition based on Linear Driving is provided
Speech recognition system.
The purpose of the invention is achieved by the following technical solution：A kind of high definition speech recognition system based on Linear Driving,
It includes voice acquisition module, main control unit, the sound bank being connected with main control unit, characteristic extracting module, speech recognition mould
Block, endpoint detection module, the audio coding module being connected with voice acquisition module, and be connected with audio coding module
Preprocessing module, in order to reach the purpose of the present invention, the present invention is also serially connected between preprocessing module and endpoint detection module
Linear Driving module.
Further, the Linear Driving module is by amplifier P1, triode Q7, triode Q8, triode Q9, three poles
Pipe Q10, field-effect tube MOS1, field-effect tube MOS2, one end is connected with the emitter of triode Q8, the other end then with field-effect
The resistance R15 that the grid of pipe MOS1 is connected, the resistance R16 being serially connected between the grid and source electrode of field-effect tube MOS1, one end
It is connected with the emitter of triode Q7, the resistance R17 that the other end is then connected with the drain electrode of field-effect tube MOS1, one end and field
The poles resistance R18, N that the drain electrode of effect pipe MOS1 is connected, the other end is then connected with the collector of triode Q10 are through resistance
Be connected with the base stage of triode Q10 after R19, the poles P ground connection diode D9 and one end and field-effect tube MOS2 source electrode phase
The resistance R20 compositions that connection, the other end are grounded；The cathode of the amplifier P1 is connected with the emitter of triode Q8, its just
Pole then as the input terminal of the Linear Driving module, its output end then respectively with the base stage of triode Q8 and the base of triode Q9
Pole is connected；The collector of the triode Q7 is connected with the collector of triode Q8, its base stage then hair with triode Q8
Emitter-base bandgap grading is connected；The emitter of the triode Q9 is connected with the emitter of triode Q8, its grounded collector；The field effect
Should pipe MOS2 grid be connected with the source electrode of field-effect tube MOS1, its drain electrode is then connected with the poles N of diode D9；Described three
The emitter of the pole pipe Q10 then output end as the Linear Driving module.
The preprocessing module then by triode trigger circuit, the detection circuit being connected with triode trigger circuit and
Self-maintained circuit forms；The self-maintained circuit is also connected with the detection circuit.
The triode trigger circuit is by triode Q1, triode Q2, triode Q3, and anode is after diode D2 with three
The capacitance pole C1, N that the base stage of pole pipe Q3 is connected, cathode is then connected with self-maintained circuit is connected with the base stage of triode Q2
It connects, the diode D1 that the poles P are then connected with the collector of triode Q1, one end is connected with the base stage of triode Q2, the other end
The resistance R3 being then connected with the collector of triode Q3 after resistance R4, anode be connected with the base stage of triode Q1, cathode
The capacitance C2 being then connected with detection circuit after resistance R1, one end is connected with the base stage of triode Q3, the other end is then with three
The resistance R2 that the emitter of pole pipe Q2 is connected, the poles capacitance C3, P being in parallel with resistance R2 are sequentially through diode D3 and resistance R5
It is connected afterwards with the emitter of triode Q3, the diode D4 compositions that the poles N are then connected with self-maintained circuit；The triode
The emitter ground connection of Q1, its collector then input terminal as the triode trigger circuit；The collector of the triode Q2 with
Its base stage is connected, its emitter is then connected with self-maintained circuit；The emitter of triode Q3 is also connected with detection circuit
It connects；The tie point of resistance R3 and resistance R4 connect+12V voltages while being connected with detection circuit.
The detection circuit is made of detection chip U, capacitance C4, resistance R6, resistance R7 and diode D5；The electricity
One end of resistance R6 is connected with the emitter of triode Q3, its other end is then connected with the LBI pins of detection chip U；Capacitance
The anode of C4 is connected with the tie point of resistance R3 and resistance R4, its cathode is then connected with the VBAT pins of detection chip U；Two
The poles P of pole pipe D5 are connected with the LBO pins of detection chip U, its pole N is then connected after resistance R7 with self-maintained circuit；
The RLIM pins of the detection chip U are connected after resistance R1 with the cathode of capacitance C2, its GND pin ground connection, FB pins then
It is connected with self-maintained circuit and its LX pin is then connected with the poles N of diode D5.
The self-maintained circuit is by triode Q4, triode Q5, triode Q6, the XOR gate pole IC1, N and diode
The poles P for the diode pole D6, N and diode D6 that the poles N of D4 are connected, the poles P are then connected with the first input end of XOR gate IC1
It is connected, the diode D7 of the poles P ground connection, one end is connected with the first input end of XOR gate IC1, the other end is then sequentially through resistance
The resistance R8 being connected with the base stage of triode Q6 after R9 and resistance R14 is serially connected in the first input end and second of XOR gate IC1
Resistance R10 between input terminal, one end is connected with the collector of triode Q4, the other end then with the collector phase of triode Q5
The resistance R11 of connection, one end is connected with the emitter of triode Q4, the other end is then connected with the output end of XOR gate IC1
The resistance pole R13, N be connected with the poles N of diode D5 after resistance R7, the poles P are then connected with the collector of triode Q6
Diode D8 and one end be connected with the poles N of diode D8, the resistance that the other end is then connected with the emitter of triode Q5
R12 is formed；The first input end of the XOR gate IC1 is connected with the cathode of the cathode of capacitance C1 and capacitance C3 respectively, it
Output end is then as the output end of the self-maintained circuit；The first input end of the base stage and XOR gate IC1 of the triode Q4
It is connected, its collector is then connected with the base stage of triode Q5；The collector of the triode Q5 then respectively with detection chip U
FB pins and the poles N of diode D8 be connected；The emitter of triode Q6 is grounded.
The detection chip U is SP6648 integrated circuits.
The present invention compared with the prior art, has the following advantages and advantageous effect：
(1) identification of the invention distance is remote, people do not needed during identification it is in close proximity, as long as sending out a long way off
The sound present invention is i.e. recognizable.
(2) accuracy of identification of the present invention is high, and misrecognition is avoided to bring unnecessary trouble.
(3) the configuration of the present invention is simple, and low energy consumption, and wide model is suitble to promote.
(4) present invention can continuously handle voice signal by the effect of Linear Driving module, be avoided in language
There is desultory phenomenon during identifying in sound, influences the accuracy of identification of the present invention.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the preprocessing module electrical block diagram of the present invention.
Fig. 3 is the Linear Driving modular circuit structural schematic diagram of the present invention.
Specific implementation mode
The present invention is described in further detail with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the present invention includes voice acquisition module 8, and main control unit 1, the sound bank being connected with main control unit 1
2, characteristic extracting module 3, sound identification module 4, endpoint detection module 5, the audio coding mould being connected with voice acquisition module 8
Block 7, the preprocessing module 6 being connected with audio coding module 7, in order to reach the purpose of the present invention, the present invention is in pretreatment mould
Linear Driving module 9 is also serially connected between block 6 and endpoint detection module 5.
Wherein, control centre of the main control unit 1 as the present invention, is realized using existing microcontroller.Voice collecting
Existing microphone can be used to realize for receiving voice signal and being exported after being converted into analog audio signal in unit 8.Sound
Frequency coding module 7 for being exported after the analog audio signal received is converted into digital audio and video signals, then use by preprocessing module 6
It is handled in digital audio and video signals, avoids distorted signals, and endpoint detection module 5 is then used for voice signal and non-voice
The period of signal distinguishes.Linear Driving module 9 then can to collected voice signal carry out linear driving, make language
Sound signal is more coherent, avoids voice signal from desultory phenomenon occur, influences accuracy of identification.
Sound bank 2 then is used to prestore the voice signal of identified target, and characteristic extracting module 3 is then used for input
Digital speech entry signal is analyzed, and the order representated by entry signal is extracted.Sound identification module 4 is then used for feature
The voice signal that extraction module 3 is extracted is identified with the voice signal in sound bank 2, and whether judgement voice command is consistent.
The audio coding module 7, endpoint detection module 5, sound bank 2, characteristic extracting module 3 and sound identification module 4 are all made of existing
There is technology can be realized.
As shown in Fig. 2, the preprocessing module 6 is by triode trigger circuit, the detection being connected with triode trigger circuit
Circuit and self-maintained circuit composition；The self-maintained circuit is also connected with the detection circuit.
Wherein, triode trigger circuit is by triode Q1, triode Q2, triode Q3, capacitance C1, capacitance C2, capacitance C3,
Diode D1, diode D2, diode D3, diode D4, resistance R1, resistance R2, resistance R3, resistance R4 and resistance R5 groups
At.
When connection, capacitance C1 anode be connected with the base stage of triode Q3 after diode D2, its cathode then with self-excitation
Oscillating circuit is connected, and the poles N of diode D1 are connected with the base stage of triode Q2, its pole P then collector with triode Q1
It is connected, one end of resistance R3 is connected with the base stage of triode Q2, its other end then collection after resistance R4 with triode Q3
Electrode is connected, capacitance C2 anode be connected with the base stage of triode Q1, its cathode then after resistance R1 with detection circuit phase
Connection, one end of resistance R2 is connected with the base stage of triode Q3, its other end is then connected with the emitter of triode Q2, electricity
Hold C3 to be then in parallel with resistance R2, the poles P of the diode D4 sequentially emitter after diode D3 and resistance R5 with triode Q3
It is connected, its pole N is then connected with self-maintained circuit.
Meanwhile the emitter ground connection of triode Q1, its collector then input terminal as the triode trigger circuit.Institute
The collector for stating triode Q2 is connected with its base stage, its emitter is then connected with self-maintained circuit.The hair of triode Q3
Emitter-base bandgap grading also needs to be connected with detection circuit；The tie point of resistance R3 and resistance R4 meet+12V while being connected with detection circuit
Voltage.
The detection circuit can be detected voice signal frequency, by detection chip U, capacitance C4, resistance R6,
Resistance R7 and diode D5 compositions.When connection, one end of the resistance R6 is connected with the emitter of triode Q3, its is another
End is then connected with the LBI pins of detection chip U.Capacitance C4 anode be connected with the tie point of resistance R3 and resistance R4, its
Cathode is then connected with the VBAT pins of detection chip U.The poles P of diode D5 are connected with the LBO pins of detection chip U, its N
Pole is then connected after resistance R7 with self-maintained circuit.The RLIM pins of the detection chip U after resistance R1 with capacitance C2
Cathode be connected, its GND pin ground connection, FB pins be then connected with self-maintained circuit and its LX pin then with diode
The poles N of D5 are connected.In order to reach better detection result, detection chip U is preferentially realized using SP6648 integrated circuits.
The self-maintained circuit includes triode Q4, triode Q5, triode Q6, the XOR gate pole IC1, N and two poles
The P for the diode pole D6, N and diode D6 that the poles N of pipe D4 are connected, the poles P are then connected with the first input end of XOR gate IC1
The diode D7 that pole is connected, the poles P are grounded, one end is connected with the first input end of XOR gate IC1, the other end is then sequentially through electricity
The resistance R8 that is connected with the base stage of triode Q6 after resistance R9 and resistance R14 is serially connected in the first input end and the of XOR gate IC1
Resistance R10 between two input terminals, one end is connected with the collector of triode Q4, the other end then collector with triode Q5
The resistance R11 being connected, one end is connected with the emitter of triode Q4, the other end is then connected with the output end of XOR gate IC1
The resistance pole R13, N connect is connected after resistance R7 with the poles N of diode D5, the poles P are then connected with the collector of triode Q6
Diode D8 and one end be connected with the poles N of diode D8, the electricity that the other end is then connected with the emitter of triode Q5
Hinder R12.
Its in connection, the first input end of XOR gate IC1 need respectively with the cathode of capacitance C1 and capacitance C3
Cathode is connected, its output end is then as the output end of the self-maintained circuit.The base stage of the triode Q4 and XOR gate IC1
First input end be connected, its collector is then connected with the base stage of triode Q5；The collector of the triode Q5 then divides
It is not connected with the poles N of the FB pins of detection chip U and diode D8；The emitter of triode Q6 is grounded.
The Linear Driving module 9 is then the inventive point place of the present invention, as shown in figure 3, it is by amplifier P1, triode
Q7, triode Q8, triode Q9, triode Q10, field-effect tube MOS1, field-effect tube MOS2, diode D9, resistance R15, electricity
Hinder R16, resistance R17, resistance R18, resistance R19 and resistance R20 compositions.
When connection, one end of resistance R15 is connected with the emitter of triode Q8, its other end then with field-effect tube MOS1
Grid be connected, resistance R16 is then serially connected between the grid and source electrode of field-effect tube MOS1, one end of resistance R17 and three poles
The emitter of pipe Q7 is connected, its other end is then connected with the drain electrode of field-effect tube MOS1, one end of resistance R18 and field-effect
The drain electrode of pipe MOS1 is connected, its other end is then connected with the collector of triode Q10, and the poles N of diode D9 are through resistance R19
It is connected afterwards with the base stage of triode Q10, its pole P ground connection, one end of resistance R20 is connected with the source electrode of field-effect tube MOS2,
Its other end is grounded.
Meanwhile the cathode of amplifier P1 is connected with the emitter of triode Q8, its anode is then used as the Linear Driving
The input terminal of module 9, its output end are then connected with the base stage of the base stage of triode Q8 and triode Q9 respectively.Three pole
The collector of pipe Q7 is connected with the collector of triode Q8, its base stage is then connected with the emitter of triode Q8.Described three
The emitter of pole pipe Q9 is connected with the emitter of triode Q8, its grounded collector.The grid of the field-effect tube MOS2 with
The source electrode of field-effect tube MOS1 is connected, its drain electrode is then connected with the poles N of diode D9.The emitter of the triode Q10
The then output end as the Linear Driving module 9.The Linear Driving module can be very good to carry out linear process to voice signal,
Its continuity of treated voice signal is more preferable, to improve the accuracy of identification of the present invention.
As described above, the present invention can be realized well.
Claims (6)
1. a kind of high definition speech recognition system based on Linear Driving, by voice acquisition module（8）, main control unit（1）, with master
Control unit（1）The sound bank being connected（2）, characteristic extracting module（3）, sound identification module（4）, endpoint detection module（5）, with
Voice acquisition module（8）The audio coding module being connected（7）, and with audio coding module（7）The pretreatment mould being connected
Block（6）Composition, it is characterised in that：In preprocessing module（6）With endpoint detection module（5）Between be also serially connected with Linear Driving module
（9）；The Linear Driving module（9）By amplifier P1, triode Q7, triode Q8, triode Q9, triode Q10, field effect
Should pipe MOS1, field-effect tube MOS2, one end is connected with the emitter of triode Q8, the other end then grid with field-effect tube MOS1
The resistance R15 that pole is connected, the resistance R16 being serially connected between the grid and source electrode of field-effect tube MOS1, one end and triode Q7
Emitter be connected, the resistance R17 that the other end is then connected with the drain electrode of field-effect tube MOS1, one end and field-effect tube MOS1
Drain electrode be connected, the resistance pole R18, N that the other end is then connected with the collector of triode Q10 after resistance R19 with three poles
The base stage of pipe Q10 is connected, the diode D9 of the poles P ground connection and one end are connected with the source electrode of field-effect tube MOS2, the other end
The resistance R20 compositions of ground connection；The cathode of the amplifier P1 is connected with the emitter of triode Q8, its anode is then used as the line
Property drive module（9）Input terminal, its output end is then connected with the base stage of the base stage of triode Q8 and triode Q9 respectively；
The collector of the triode Q7 is connected with the collector of triode Q8, its base stage is then connected with the emitter of triode Q8
It connects；The emitter of the triode Q9 is connected with the emitter of triode Q8, its grounded collector；The field-effect tube MOS2
Grid be connected with the source electrode of field-effect tube MOS1, its drain electrode is then connected with the poles N of diode D9；The triode Q10
Emitter then be used as the Linear Driving module（9）Output end.
2. a kind of high definition speech recognition system based on Linear Driving according to claim 1, it is characterised in that：Described
Preprocessing module（6）Then by triode trigger circuit, the detection circuit being connected with triode trigger circuit and self-oscillation electricity
Road forms；The self-maintained circuit is also connected with the detection circuit.
3. a kind of high definition speech recognition system based on Linear Driving according to claim 2, it is characterised in that：Described
Triode trigger circuit by triode Q1, triode Q2, triode Q3, anode after diode D2 with the base stage phase of triode Q3
Connection, the capacitance pole C1, N that is then connected with self-maintained circuit of cathode be connected with the base stage of triode Q2, the poles P then with three poles
The diode D1 that the collector of pipe Q1 is connected, one end is connected with the base stage of triode Q2, the other end then after resistance R4 with
The resistance R3 that the collector of triode Q3 is connected, anode be connected with the base stage of triode Q1, cathode then after resistance R1 and
The capacitance C2 that detection circuit is connected, one end is connected with the base stage of triode Q3, the other end then emitter with triode Q2
The resistance R2 being connected, the poles capacitance C3, P being in parallel with resistance R2 are sequentially after diode D3 and resistance R5 with triode Q3's
The diode D4 compositions that emitter is connected, the poles N are then connected with self-maintained circuit；The emitter of the triode Q1 connects
Ground, its collector then input terminal as the triode trigger circuit；The collector of the triode Q2 is connected with its base stage,
Its emitter is then connected with self-maintained circuit；The emitter of triode Q3 is also connected with detection circuit；Resistance R3 and electricity
The tie point of resistance R4 connects+12V voltages while being connected with detection circuit.
4. a kind of high definition speech recognition system based on Linear Driving according to claim 3, it is characterised in that：Described
Detection circuit is made of detection chip U, capacitance C4, resistance R6, resistance R7 and diode D5；One end and three of the resistance R6
The emitter of pole pipe Q3 is connected, its other end is then connected with the LBI pins of detection chip U；The anode and resistance of capacitance C4
The tie point of R3 and resistance R4 are connected, its cathode is then connected with the VBAT pins of detection chip U；The poles P of diode D5 with
The LBO pins of detection chip U are connected, its pole N is then connected after resistance R7 with self-maintained circuit；The detection chip U
RLIM pins be connected with the cathode of capacitance C2 after resistance R1, its GND pin ground connection, FB pins then with self-maintained circuit
It is connected and its LX pin is then connected with the poles N of diode D5.
5. a kind of high definition speech recognition system based on Linear Driving according to claim 4, it is characterised in that：Described
Self-maintained circuit is by triode Q4, triode Q5, triode Q6, and the XOR gate pole IC1, N is connected with the poles N of diode D4, P
The diode pole D6, N that pole is then connected with the first input end of XOR gate IC1 is connected with the poles P of diode D6, the poles P are grounded
Diode D7, one end is connected with the first input end of XOR gate IC1, the other end is then sequentially after resistance R9 and resistance R14
The resistance R8 being connected with the base stage of triode Q6, is serially connected between the first input end of XOR gate IC1 and the second input terminal
Resistance R10, the resistance that one end is connected with the collector of triode Q4, the other end is then connected with the collector of triode Q5
R11, the resistance R13, N that one end is connected with the emitter of triode Q4, the other end is then connected with the output end of XOR gate IC1
The diode D8 that pole is connected after resistance R7 with the poles N of diode D5, the poles P are then connected with the collector of triode Q6, with
And the resistance R12 compositions that one end is connected with the poles N of diode D8, the other end is then connected with the emitter of triode Q5；Institute
The first input end for stating XOR gate IC1 is connected with the cathode of the cathode of capacitance C1 and capacitance C3 respectively, its output end is then made
For the output end of the self-maintained circuit；The base stage of the triode Q4 is connected with the first input end of XOR gate IC1, it collects
Electrode is then connected with the base stage of triode Q5；The collector of the triode Q5 then respectively with the FB pins of detection chip U with
And the poles N of diode D8 are connected；The emitter of triode Q6 is grounded.
6. a kind of high definition speech recognition system based on Linear Driving according to claim 5, it is characterised in that：Described
Detection chip U is SP6648 integrated circuits.
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| US5875426A (en) * | 1996-06-12 | 1999-02-23 | International Business Machines Corporation | Recognizing speech having word liaisons by adding a phoneme to reference word models |
| CN101206858B (en) * | 2007-12-12 | 2011-07-13 | 北京中星微电子有限公司 | Method and system for testing alone word voice endpoint |
| CN101625857B (en) * | 2008-07-10 | 2012-05-09 | 新奥特（北京）视频技术有限公司 | Self-adaptive voice endpoint detection method |
| CN103236260B (en) * | 2013-03-29 | 2015-08-12 | 京东方科技集团股份有限公司 | Speech recognition system |
| CN203261294U (en) * | 2013-05-29 | 2013-10-30 | 成都迈科高技术开发有限责任公司 | Optic translator rapid linear driving circuit |
| CN104540070A (en) * | 2014-11-29 | 2015-04-22 | 成都思茂科技有限公司 | High-bandwidth self-gain audio processing system |
| CN104464748A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | Filter-frequency-adjustable audio processing system based on linear driving |
| CN104467697A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | Linear drive based bias current source amplifier system |
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Effective date of registration: 20201223 Address after: 215600 building B, Aikang building, No.5 Binhe Road, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: SUZHOU COFFMAN MACHINERY Co.,Ltd. Address before: Room 505 and 510, No. 298, bachelor Road, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: NINGBO MOMI INNOVATION WORKS ELECTRONIC TECHNOLOGY Co.,Ltd. |
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