CN104900234A - High-definition speech recognition system - Google Patents
High-definition speech recognition system Download PDFInfo
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- CN104900234A CN104900234A CN201510292722.3A CN201510292722A CN104900234A CN 104900234 A CN104900234 A CN 104900234A CN 201510292722 A CN201510292722 A CN 201510292722A CN 104900234 A CN104900234 A CN 104900234A
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Abstract
The invention discloses a high-definition speech recognition system. The system is characterized by including a master control unit (1), a speech bank (2), a feature extraction module (3), a speech recognition module (4), an end point detection module (5), a preprocessing module (6) connected to the end point detection module (5), an audio coding module (7) connected to the preprocessing module (6), and a speech acquisition unit (8) connected to the audio coding module (7), wherein the speech bank (2), the feature extraction module (3), the speech recognition module (4) and the end point detection module (5) are connected to the master control unit (1), the preprocessing module (6) consists of a triode trigger circuit, a detection circuit and a self-excited oscillation circuit, the detection circuit and the self-excited oscillation circuit are connected to the triode trigger circuit, and the self-excited oscillation circuit is also connected to the detection circuit. The high-definition speech recognition system enables long-distance recognition to be realized. People do not need to be too close during a recognition process, and the system can recognize the people as long as the people emit sound in the distance. Meanwhile, the system is high in recognition precision and prevents unnecessary troubles for people due to recognition by mistake.
Description
Technical field
The present invention relates to a kind of speech recognition system, specifically refer to a kind of high definition speech recognition system.
Background technology
Speech recognition, as a cross discipline, starts to move towards market from laboratory in recent years.In today of scientific and technological development, speech recognition technology extensively enters into the every field such as industry, household electrical appliances, communication, automotive electronics, medical treatment, home services, consumption electronic product, brings huge change to the life of people and production.But existing commercially used its accuracy of identification of speech recognition system is not high, easily occurs the existing picture of wrong identification, has brought very large trouble.
Summary of the invention
The object of the invention is to overcome the defect that its accuracy of identification of speech recognition system traditional is at present not high, a kind of high definition speech recognition system is provided.
Object of the present invention is achieved through the following technical solutions: a kind of high definition speech recognition system, it is by main control unit, the sound bank be connected with main control unit, characteristic extracting module, sound identification module and endpoint detection module, the pretreatment module be connected with endpoint detection module, the audio coding module be connected with pretreatment module, and the voice collecting unit be connected with audio coding module forms; Described pretreatment module is then by triode trigger circuit, and the testing circuit be connected with triode trigger circuit and self-maintained circuit form; Described self-maintained circuit is also connected with this testing circuit.
Further, described triode trigger circuit are by triode Q1, triode Q2, triode Q3, positive pole is connected with the base stage of triode Q3 after diode D2, the electric capacity C1 that negative pole is then connected with self-maintained circuit, N pole is connected with the base stage of triode Q2, the diode D1 that P pole is then connected with the collector of triode Q1, one end is connected with the base stage of triode Q2, the resistance R3 that the other end is then connected with the collector of triode Q3 after resistance R4, positive pole is connected with the base stage of triode Q1, the electric capacity C2 that negative pole is then connected with testing circuit after resistance R1, one end is connected with the base stage of triode Q3, the resistance R2 that the other end is then connected with the emitter of triode Q2, the electric capacity C3 be in parallel with resistance R2, P pole is connected with the emitter of triode Q3 after resistance R5 through diode D3 in turn, the diode D4 that N pole is then connected with self-maintained circuit forms, the grounded emitter of described triode Q1, its collector are then as the input end of these triode trigger circuit, the collector of described 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 testing circuit, resistance R3 connects+12V voltage while being connected with testing circuit with the tie point of resistance R4.
Described testing circuit is by detection chip U, and electric capacity C4, resistance R6, resistance R7 and diode D5 form; One end of described resistance R6 is connected with the emitter of triode Q3, its other end is then connected with the LBI pin of detection chip U; The positive pole of electric capacity C4 is connected with the tie point of resistance R4 with resistance R3, its negative pole is then connected with the VBAT pin of detection chip U; The P pole of diode D5 is connected with the LBO pin of detection chip U, its N pole is then connected with self-maintained circuit after resistance R7; The RLIM pin of described detection chip U is connected with the negative pole of electric capacity C2 after resistance R1, its GND pin ground connection, FB pin are then connected with self-maintained circuit, and its LX pin is then connected with the N pole of diode D5.
Described self-maintained circuit is by triode Q4, triode Q5, triode Q6, XOR gate IC1, N pole is connected with the N pole of diode D4, the diode D6 that P pole is then connected with the first input end of XOR gate IC1, N pole is connected with the P pole of diode D6, the diode D7 of P pole ground connection, one end is connected with the first input end of XOR gate IC1, the other end is then in turn through resistance R8 that resistance R9 is connected with the base stage of triode Q6 after resistance R14, be serially connected in the resistance R10 between the first input end of XOR gate IC1 and the second input end, one end is connected with the collector of triode Q4, the resistance R11 that the other end is then connected with the collector of triode Q5, one end is connected with the emitter of triode Q4, the resistance R13 that the other end is then connected with the output terminal of XOR gate IC1, N pole is connected with the N pole of diode D5 after resistance R7, the diode D8 that P pole is then connected with the collector of triode Q6, and one end is connected with the N pole of diode D8, the resistance R12 that the other end is then connected with the emitter of triode Q5 forms, the first input end of described XOR gate IC1 is respectively with the negative pole of electric capacity C1 and the negative pole of electric capacity C3 is connected, its output terminal is then as the output terminal of this self-maintained circuit, the described base stage of triode Q4 is connected with the first input end of XOR gate IC1, its collector is then connected with the base stage of triode Q5, the collector of described triode Q5 is then connected with the FB pin of detection chip U and the N pole of diode D8 respectively, the grounded emitter of triode Q6.
Described detection chip U is SP6648 integrated circuit.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) decipherment distance of the present invention is far away, and people do not need to lean on very near, as long as sound the present invention and identifiable design a long way off in the process identified.
(2) accuracy of identification of the present invention is high, avoids identifying bringing unnecessary trouble by mistake.
(3) structure of the present invention is simple, and energy consumption is low, is applicable to wide model and promotes.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is pretreatment module electrical block diagram of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the present invention is by main control unit 1, the sound bank 2 be connected with main control unit 1, characteristic extracting module 3, sound identification module 4 and endpoint detection module 5, the pretreatment module 6 be connected with endpoint detection module 5, the audio coding module 7 be connected with pretreatment module 6, and the voice collecting unit 8 be connected with audio coding module 7 forms.
Wherein, main control unit 1 is as control center of the present invention, and it adopts existing single-chip microcomputer to realize.Voice collecting unit 8 is for received speech signal and export after converting simulated audio signal to, and it can adopt existing microphone to realize.Audio coding module 7 exports after converting received simulated audio signal to digital audio and video signals, pretreatment module 6 is for processing digital audio and video signals, avoid distorted signals, endpoint detection module 5 is then for making a distinction the period of voice signal and non-speech audio.
Sound bank 2 is for prestoring the voice signal being identified target, and characteristic extracting module 3, for analyzing the digital speech entry signal of input, extracts the order representated by entry signal.Sound identification module 4 identifies for the voice signal in the voice signal that extracts characteristic extracting module 3 and sound bank 2, judges that whether voice command is consistent.This audio coding module 7, endpoint detection module 5, sound bank 2, characteristic extracting module 3 and sound identification module 4 all adopt prior art to realize.
Described pretreatment module 6 is emphasis place of the present invention, and as shown in Figure 2, it is by triode trigger circuit, and the testing circuit be connected with triode trigger circuit and self-maintained circuit form; Described self-maintained circuit is also connected with this testing circuit.
Wherein, triode trigger circuit are by triode Q1, and triode Q2, triode Q3, electric capacity C1, electric capacity C2, electric capacity C3, diode D1, diode D2, diode D3, diode D4, resistance R1, resistance R2, resistance R3, resistance R4 and resistance R5 form.
During connection, the positive pole of electric capacity C1 is connected with the base stage of triode Q3 after diode D2, its negative pole is then connected with self-maintained circuit, the N pole of diode D1 is connected with the base stage of triode Q2, its P pole is then connected with the collector of triode Q1, one end of resistance R3 is connected with the base stage of triode Q2, its other end is then connected with the collector of triode Q3 after resistance R4, the positive pole of electric capacity C2 is connected with the base stage of triode Q1, its negative pole is then connected with testing circuit after resistance R1, 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, electric capacity C3 is then in parallel with resistance R2, the P pole of diode D4 is connected with the emitter of triode Q3 after resistance R5 through diode D3 in turn, its N pole is then connected with self-maintained circuit.
Meanwhile, the grounded emitter of this triode Q1, its collector are then as the input end of these triode trigger circuit.The collector of described triode Q2 is connected with its base stage, its emitter is then connected with self-maintained circuit.The emitter of triode Q3 also needs to be connected with testing circuit; Resistance R3 connects+12V voltage while being connected with testing circuit with the tie point of resistance R4.
Described testing circuit can detect voice signal frequency, and it is by detection chip U, electric capacity C4, resistance R6, and resistance R7 and diode D5 forms.During connection, one end of described resistance R6 is connected with the emitter of triode Q3, its other end is then connected with the LBI pin of detection chip U.The positive pole of electric capacity C4 is connected with the tie point of resistance R4 with resistance R3, its negative pole is then connected with the VBAT pin of detection chip U.The P pole of diode D5 is connected with the LBO pin of detection chip U, its N pole is then connected with self-maintained circuit after resistance R7.The RLIM pin of described detection chip U is connected with the negative pole of electric capacity C2 after resistance R1, its GND pin ground connection, FB pin are then connected with self-maintained circuit, and its LX pin is then connected with the N pole of diode D5.In order to reach better Detection results, this detection chip U preferentially adopts SP6648 integrated circuit to realize.
Described self-maintained circuit comprises triode Q4, triode Q5, triode Q6, XOR gate IC1, N pole is connected with the N pole of diode D4, the diode D6 that P pole is then connected with the first input end of XOR gate IC1, N pole is connected with the P pole of diode D6, the diode D7 of P pole ground connection, one end is connected with the first input end of XOR gate IC1, the other end is then in turn through resistance R8 that resistance R9 is connected with the base stage of triode Q6 after resistance R14, be serially connected in the resistance R10 between the first input end of XOR gate IC1 and the second input end, one end is connected with the collector of triode Q4, the resistance R11 that the other end is then connected with the collector of triode Q5, one end is connected with the emitter of triode Q4, the resistance R13 that the other end is then connected with the output terminal of XOR gate IC1, N pole is connected with the N pole of diode D5 after resistance R7, the diode D8 that P pole is then connected with the collector of triode Q6, and one end is connected with the N pole of diode D8, the resistance R12 that the other end is then connected with the emitter of triode Q5.
It is when connecting, and the first input end of this XOR gate IC1 needs respectively with the negative pole of electric capacity C1 and the negative pole of electric capacity C3 is connected, its output terminal is then as the output terminal of this self-maintained circuit.The described base stage of triode Q4 is connected with the first input end of XOR gate IC1, its collector is then connected with the base stage of triode Q5; The collector of described triode Q5 is then connected with the FB pin of detection chip U and the N pole of diode D8 respectively; The grounded emitter of triode Q6.
As mentioned above, just the present invention can well be realized.
Claims (5)
1. a high definition speech recognition system, it is characterized in that: it is by main control unit (1), the sound bank (2) be connected with main control unit (1), characteristic extracting module (3), sound identification module (4) and endpoint detection module (5), the pretreatment module (6) be connected with endpoint detection module (5), the audio coding module (7) be connected with pretreatment module (6), and the voice collecting unit (8) be connected with audio coding module (7) forms; Described pretreatment module (6) is then by triode trigger circuit, and the testing circuit be connected with triode trigger circuit and self-maintained circuit form; Described self-maintained circuit is also connected with this testing circuit.
2. a kind of high definition speech recognition system according to claim 1, it is characterized in that: described triode trigger circuit are by triode Q1, triode Q2, triode Q3, positive pole is connected with the base stage of triode Q3 after diode D2, the electric capacity C1 that negative pole is then connected with self-maintained circuit, N pole is connected with the base stage of triode Q2, the diode D1 that P pole is then connected with the collector of triode Q1, one end is connected with the base stage of triode Q2, the resistance R3 that the other end is then connected with the collector of triode Q3 after resistance R4, positive pole is connected with the base stage of triode Q1, the electric capacity C2 that negative pole is then connected with testing circuit after resistance R1, one end is connected with the base stage of triode Q3, the resistance R2 that the other end is then connected with the emitter of triode Q2, the electric capacity C3 be in parallel with resistance R2, P pole is connected with the emitter of triode Q3 after resistance R5 through diode D3 in turn, the diode D4 that N pole is then connected with self-maintained circuit forms, the grounded emitter of described triode Q1, its collector are then as the input end of these triode trigger circuit, the collector of described 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 testing circuit, resistance R3 connects+12V voltage while being connected with testing circuit with the tie point of resistance R4.
3. a kind of high definition speech recognition system according to claim 2, is characterized in that: described testing circuit is by detection chip U, and electric capacity C4, resistance R6, resistance R7 and diode D5 form; One end of described resistance R6 is connected with the emitter of triode Q3, its other end is then connected with the LBI pin of detection chip U; The positive pole of electric capacity C4 is connected with the tie point of resistance R4 with resistance R3, its negative pole is then connected with the VBAT pin of detection chip U; The P pole of diode D5 is connected with the LBO pin of detection chip U, its N pole is then connected with self-maintained circuit after resistance R7; The RLIM pin of described detection chip U is connected with the negative pole of electric capacity C2 after resistance R1, its GND pin ground connection, FB pin are then connected with self-maintained circuit, and its LX pin is then connected with the N pole of diode D5.
4. a kind of high definition speech recognition system according to claim 3, it is characterized in that: described self-maintained circuit is by triode Q4, triode Q5, triode Q6, XOR gate IC1, N pole is connected with the N pole of diode D4, the diode D6 that P pole is then connected with the first input end of XOR gate IC1, N pole is connected with the P pole of diode D6, the diode D7 of P pole ground connection, one end is connected with the first input end of XOR gate IC1, the other end is then in turn through resistance R8 that resistance R9 is connected with the base stage of triode Q6 after resistance R14, be serially connected in the resistance R10 between the first input end of XOR gate IC1 and the second input end, one end is connected with the collector of triode Q4, the resistance R11 that the other end is then connected with the collector of triode Q5, one end is connected with the emitter of triode Q4, the resistance R13 that the other end is then connected with the output terminal of XOR gate IC1, N pole is connected with the N pole of diode D5 after resistance R7, the diode D8 that P pole is then connected with the collector of triode Q6, and one end is connected with the N pole of diode D8, the resistance R12 that the other end is then connected with the emitter of triode Q5 forms, the first input end of described XOR gate IC1 is respectively with the negative pole of electric capacity C1 and the negative pole of electric capacity C3 is connected, its output terminal is then as the output terminal of this self-maintained circuit, the described base stage of triode Q4 is connected with the first input end of XOR gate IC1, its collector is then connected with the base stage of triode Q5, the collector of described triode Q5 is then connected with the FB pin of detection chip U and the N pole of diode D8 respectively, the grounded emitter of triode Q6.
5. a kind of high definition speech recognition system according to claim 4, is characterized in that: described detection chip U is SP6648 integrated circuit.
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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. |