CN104900234B - A kind of high definition speech recognition system - Google Patents
A kind of high definition speech recognition system Download PDFInfo
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- CN104900234B CN104900234B CN201510292722.3A CN201510292722A CN104900234B CN 104900234 B CN104900234 B CN 104900234B CN 201510292722 A CN201510292722 A CN 201510292722A CN 104900234 B CN104900234 B CN 104900234B
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Abstract
The invention discloses a kind of high definition speech recognition systems, it is characterised in that：It is by main control unit (1), sound bank (2), characteristic extracting module (3), sound identification module (4) and the endpoint detection module (5) being connected with main control unit (1), the preprocessing module (6) being connected with endpoint detection module (5), the audio coding module (7) being connected with preprocessing module (6), and the voice collecting unit (8) being connected with audio coding module (7) form；The preprocessing module (6) is then by triode trigger circuit, the detection circuit being connected with triode trigger circuit and self-maintained circuit composition；The self-maintained circuit is also connected with the detection circuit.The identification distance of the present invention is remote, people do not needed during identification it is in close proximity, if it is i.e. recognizable to make a sound the present invention a long way off, meanwhile, accuracy of identification of the present invention is high, avoids misidentifying and brings unnecessary trouble.
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.
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 its accuracy of identification of system is not high, is susceptible to the phenomenon of wrong identification, has brought prodigious trouble.
Invention content
It is an object of the invention to overcome the defect that traditional its accuracy of identification of speech recognition system is not high at present, provide
A kind of high definition speech recognition system.
The purpose of the invention is achieved by the following technical solution：A kind of high definition speech recognition system, by main control unit, with
Sound bank, characteristic extracting module, sound identification module and the endpoint detection module that main control unit is connected, with end-point detection mould
The preprocessing module that block is connected, the audio coding module being connected with preprocessing module, and be connected with audio coding module
The voice collecting unit composition connect；The preprocessing module then by triode trigger circuit, is connected with triode trigger circuit
Detection circuit and the self-maintained circuit composition connect；The self-maintained circuit is also connected with the detection circuit.
Further, the triode trigger circuit is by triode Q1, triode Q2, triode Q3, and anode is through two poles
It is connected with the base stage of triode Q3 after pipe D2, the capacitance pole C1, N and the triode Q2 that cathode is then connected with self-maintained circuit
Base stage be connected, 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
It connects, the resistance R3 that the other end is then connected after resistance R4 with the collector of triode Q3, the base stage phase of anode and triode Q1
The capacitance C2 that connection, cathode are then connected after resistance R1 with detection circuit, one end is connected with the base stage of triode Q3, is another
The resistance R2 being then connected with the emitter of triode Q2 is held, the poles capacitance C3, P being in parallel with resistance R2 are sequentially through diode D3
It is connected with the emitter of triode Q3 with after resistance R5, the diode D4 compositions that the poles N are then connected with self-maintained circuit；Institute
State emitter ground connection, its collector then input terminal as the triode trigger circuit of triode Q1；The triode Q2's
Collector is connected with its base stage, its emitter is then connected with self-maintained circuit；The emitter of triode Q3 also with detection
Circuit is connected；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.
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.
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 by main control unit 1, be connected with main control unit 1 sound bank 2, characteristic extracting module 3,
Sound identification module 4 and endpoint detection module 5, the preprocessing module 6 being connected with endpoint detection module 5, with pretreatment mould
The audio coding module 7 that block 6 is connected, and the voice collecting unit 8 being connected with audio coding module 7 form.
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.
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.
Where the preprocessing module 6 is then the emphasis of the present invention, as shown in Fig. 2, it is by triode trigger circuit, with
Detection circuit and the self-maintained circuit composition that triode trigger circuit is connected；The self-maintained circuit is also electric with the detection
Road is connected.
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.
As described above, the present invention can be realized well.
Claims (4)
1. a kind of high definition speech recognition system, it is characterised in that：It is by main control unit (1), the language being connected with main control unit (1)
Sound library (2), characteristic extracting module (3), sound identification module (4) and endpoint detection module (5), with endpoint detection module (5)
The preprocessing module (6) being connected, the audio coding module (7) being connected with preprocessing module (6), and with audio coding mould
Voice collecting unit (8) composition that block (7) is connected；The preprocessing module (6) is then by triode trigger circuit, with three poles
Detection circuit and the self-maintained circuit composition that pipe trigger circuit is connected；The self-maintained circuit also with the detection circuit phase
Connection；The triode trigger circuit by triode Q1, triode Q2, triode Q3, anode after diode D2 with three poles
The capacitance pole C1, N that the base stage of 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.
2. a kind of high definition speech recognition system according to claim 1, it is characterised in that：The detection circuit is by detecting
Chip U, capacitance C4, resistance R6, resistance R7 and diode D5 compositions；The emitter of one end and triode Q3 of the resistance R6
It is connected, its other end is then connected with the LBI pins of detection chip U；The company of the anode and resistance R3 and resistance R4 of capacitance C4
Contact is connected, its cathode is then connected with the VBAT pins of detection chip U；The LBO of the poles P and detection chip U of diode D5
Pin is connected, its pole N is then connected after resistance R7 with self-maintained circuit；The RLIM pins of the detection chip U are through electricity
It is connected with the cathode of capacitance C2 after resistance R1, its GND pin is grounded, FB pins are then connected and its LX with self-maintained circuit
Pin is then connected with the poles N of diode D5.
3. a kind of high definition speech recognition system according to claim 2, it is characterised in that：The self-maintained circuit by
Triode Q4, triode Q5, triode Q6, the XOR gate pole IC1, N is connected with the poles N of diode D4, the poles P then with XOR gate
The diode pole D6, N that the first input end of IC1 is connected is connected with the poles P of diode D6, the diode D7 of the poles P ground connection, and one
End is connected with the first input end of XOR gate IC1, the other end then sequentially base after resistance R9 and resistance R14 with triode Q6
The resistance R8 that pole is connected, the resistance R10 being serially connected between the first input end of XOR gate IC1 and the second input terminal, one end with
The resistance R11 that the collector of triode Q4 is connected, the other end is then connected with the collector of triode Q5, one end and triode
The resistance pole R13, N that the emitter of Q4 is connected, the other end is then connected with the output end of XOR gate IC1 is after resistance R7 with two
The poles N of pole pipe D5 are connected, the poles P are then connected with the collector of triode Q6 diode D8 and one end and diode D8
The poles N be connected, the other end is then connected with the emitter of triode Q5 resistance R12 compositions；The first of the XOR gate IC1
Input terminal is connected with the cathode of the cathode of capacitance C1 and capacitance C3 respectively, its output end is then as the self-maintained circuit
Output end；The base stage of the triode Q4 is connected with the first input end of XOR gate IC1, its collector is then with triode Q5's
Base stage is connected；The collector of the triode Q5 is then extremely connected with the N of the FB pins of detection chip U and diode D8 respectively
It connects；The emitter of triode Q6 is grounded.
4. a kind of high definition speech recognition system according to claim 3, it is characterised in that：The detection chip U is
SP6648 integrated circuits.
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| CN201510292722.3A CN104900234B (en) | 2015-05-30 | 2015-05-30 | A kind of high definition speech recognition system |
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| CN104900234A CN104900234A (en) | 2015-09-09 |
| CN104900234B true CN104900234B (en) | 2018-09-21 |
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Effective date of registration: 20201224 Address after: No. 186, Hongxi Road, Niutang Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou Tiantao communication equipment 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. |