CN211744673U - Offline voice microphone and far-field voice device - Google Patents
Offline voice microphone and far-field voice device Download PDFInfo
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- CN211744673U CN211744673U CN202020378834.7U CN202020378834U CN211744673U CN 211744673 U CN211744673 U CN 211744673U CN 202020378834 U CN202020378834 U CN 202020378834U CN 211744673 U CN211744673 U CN 211744673U
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Abstract
The application provides an off-line voice microphone and far-field voice equipment, wherein the off-line voice microphone comprises a voice pickup module, a voice processing module, a power supply conversion module, an input/output module and a microphone interface, the voice pickup module picks up far-field voice, the voice processing module carries out voice processing on the far-field voice and matches the processed far-field voice with a preset voice database, and outputs a control instruction corresponding to the far-field voice, the input/output module converts the control instruction into a preset digital instruction to the microphone interface, and send to the equipment body through the microphone interface in order to awaken up or control equipment body work, off-line voice microphone can directly be connected with the equipment body through the microphone interface, and far field voice equipment need not to design extra voice interaction structure to reduce far field voice equipment's voice interaction's design cost.
Description
Technical Field
The application belongs to the technical field of microphones, and particularly relates to an offline voice microphone and far-field voice equipment.
Background
With the development of intelligent products, more and more intelligent products functionally add far-field speech interaction to realize the function of far-field speech equipment, wherein far-field speech recognition mostly adopts a multi-microphone array to perform online and offline processing, however, each far-field speech equipment needs a microphone array, and each far-field speech equipment starts from an item establishment and puts far-field speech to a position of priority to solve, and according to the difference of the far-field speech equipment, different far-field speech interaction structures need to be designed, so that the design cost is increased.
SUMMERY OF THE UTILITY MODEL
The application aims to provide an offline voice microphone, and aims to solve the problem that different far-field voice interaction structures need to be designed for different far-field voice devices, so that the design cost is increased.
A first aspect of an embodiment of the present application provides an offline voice microphone, where the offline voice microphone includes a voice pickup module, a voice processing module, a power conversion module, an input/output module, and a microphone interface;
the signal output end of the voice pickup module is connected with the first signal end of the voice processing module, the second signal end of the voice processing module is connected with the first signal end of the input and output module, the power supply conversion module is respectively and electrically connected with the voice processing module, the input and output module, the voice pickup module and the microphone interface, and the input and output module is also electrically connected with the microphone interface;
the microphone interface is used for connecting the equipment body, transmitting a power supply signal to the power supply conversion module and transmitting a digital instruction between the equipment body and the input/output module;
the power supply conversion module is used for performing power supply conversion on the power supply signal and outputting a working power supply to the voice processing module, the input/output module and the voice pickup module;
the voice pickup module is used for picking up far-field voice and feeding the far-field voice back to the voice processing module;
the voice processing module is used for carrying out voice processing on the far-field voice, matching the processed far-field voice with a preset voice database, and outputting a control instruction corresponding to the far-field voice to the input and output module;
the input and output module is used for converting the control instruction into a preset digital instruction to the microphone interface and sending the preset digital instruction to the equipment body through the microphone interface so as to wake up or control the equipment body to work.
In one embodiment, the voice pickup module comprises an electret microphone.
In one embodiment, the microphone interface includes a power terminal, a signal receiving terminal, a signal transmitting terminal, and a ground terminal.
In one embodiment, the power conversion module comprises a first power output end, a second power output end, a first capacitor, a second capacitor, a third capacitor, a first inductor and a three-terminal regulator;
the first end of the first capacitor, the first end of the second capacitor, the first end of the first inductor and the input end of the three-terminal voltage stabilizer are connected with each other and connected with the power supply end of the microphone interface, the second end of the first capacitor, the second end of the second capacitor and the grounding end of the three-terminal voltage stabilizer are all grounded, the second end of the first inductor is the first power output end of the power conversion module, the output end of the voltage stabilizer and the first end of the third capacitor are connected to form the second power output end of the power conversion module, and the second end of the third capacitor is grounded.
In one embodiment, the input/output module comprises a first switch tube, a second switch tube, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor;
the input end of the first switch tube, the first end of the first resistor and the first end of the second resistor are all connected with the signal transmitting end of the microphone interface, the output end of the first switch tube, the first end of the fourth resistor and the second end of the first resistor are interconnected to form the signal transmitting end of the input/output module, the second end of the second resistor is connected with the first power output end of the power conversion module, the controlled end of the first switch tube is connected with the first end of the third resistor, the second end of the third resistor and the second end of the fourth resistor are all connected with the second power output end of the power conversion module, the input end of the second switch tube, the first end of the fifth resistor and the first end of the sixth resistor are all connected with the signal receiving end of the microphone interface, the output end of the second switch tube, the first end of the fourth resistor and the second end of the third resistor are all connected with the signal transmitting end of the microphone interface, the output end of the second switch tube is, The first end of the eighth resistor and the second end of the fifth resistor are interconnected to form a signal receiving end of the input/output module, the second end of the sixth resistor is connected with the first power output end of the power conversion module, the controlled end of the second switch tube is connected with the first end of the seventh resistor, and the second end of the seventh resistor and the second end of the eighth resistor are both connected with the second power output end of the power conversion module.
In one embodiment, the offline voice microphone further comprises an indication module for indicating the power-on of the power conversion module, wherein the indication module comprises a ninth resistor and a light-emitting diode;
the first end of the ninth resistor is connected with the second power output end of the power conversion module, the second end of the ninth resistor is connected with the anode of the light emitting diode, and the cathode of the light emitting diode is grounded.
In one embodiment, the voice processing module includes an offline voice DSP unit.
In one embodiment, the offline voice microphone further comprises a memory for storing the preset voice database.
A second aspect of the embodiments of the present application provides far-field speech equipment, where the far-field speech equipment includes an equipment body and the offline speech microphone as described above, and the equipment body is electrically connected to the offline speech microphone.
In one embodiment, the device body is at least one of a home appliance device, a wearable device, and an automotive electronic device.
This application constitutes off-line pronunciation microphone through pronunciation pickup module, speech processing module, power conversion module, input/output module and microphone interface, and far field pronunciation is picked up to pronunciation pickup module, and speech processing module carries out speech processing to far field pronunciation and will handle the far field pronunciation after and pair with predetermineeing the pronunciation database, and output with the control command that far field pronunciation correspond, input/output module convert control command into predetermined digital command to microphone interface to send to the equipment body through microphone interface in order to awaken or control equipment body work, off-line pronunciation microphone can be directly with this body coupling of equipment, and far field speech equipment need not to design extra voice interaction structure, thereby reduces far field speech equipment's the interactive design cost of pronunciation.
Drawings
FIG. 1 is a block diagram of an off-line speech microphone according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a circuit structure of a power conversion module in the off-line voice microphone according to the present application;
FIG. 3 is a schematic diagram of a circuit structure of an input/output module and a microphone interface of the off-line voice microphone according to the present application;
FIG. 4 is a block diagram of an off-line audio microphone according to a second embodiment of the present invention;
FIG. 5 is a schematic diagram of a circuit structure of an indication module in the off-line voice microphone according to the present application;
fig. 6 is a schematic block diagram of a far-field speech device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
A first aspect of an embodiment of the present application provides an offline voice microphone 100.
As shown in fig. 1, fig. 1 is a schematic block diagram of a first embodiment of an offline speech microphone according to the present application, in this embodiment, an offline speech microphone 100 includes a speech pickup module 10, a speech processing module 20, a power conversion module 40, an input/output module 30, and a microphone interface 50;
the signal output end of the voice pickup module 10 is connected with the first signal end of the voice processing module 20, the second signal end of the voice processing module 20 is connected with the first signal end of the input-output module 30, the power conversion module 40 is respectively and electrically connected with the voice processing module 20, the input-output module 30, the voice pickup module 10 and the microphone interface 50, and the input-output module 30 is also electrically connected with the microphone interface 50;
a microphone interface 50 for connecting the device body 200 and transmitting a power signal to the power conversion module 40 and transmitting a digital command between the device body 200 and the input/output module 30;
the power conversion module 40 is used for performing power conversion on the power signal and outputting a working power to the voice processing module 20, the input/output module 30 and the voice pickup module 10;
the voice pickup module 10 is used for picking up far-field voice and feeding the far-field voice back to the voice processing module 20;
the voice processing module 20 is configured to perform voice processing on the far-field voice, pair the processed far-field voice with a preset voice database, and output a control instruction corresponding to the far-field voice to the input/output module 30;
the input/output module 30 is configured to convert the control command into a preset digital command, send the preset digital command to the microphone interface 50, and send the preset digital command to the device body 200 through the microphone interface 50 to wake up or control the device body 200 to work.
In this embodiment, the voice pickup module 10 is configured to pick up far-field voice, and is connected to the voice processing module 20 to provide a voice channel for far-field voice pickup for the voice processing module 20, after receiving far-field voice, the voice processing module 20 performs voice processing such as picking up, denoising, and beamforming on far-field voice, and matches the processed far-field voice with a preset voice database, the preset voice database is stored in the voice processing module 20 and may include a wakeup word and a plurality of control command words, after matching to corresponding voice data, a corresponding control instruction is output to the input/output module 30, the input/output module 30 provides a standard communication serial port to convert the control instruction into an agreed digital command, and output the agreed digital command to the device body 200 through the microphone interface 50 for use by the device body 200, so as to wake up the device body 200 or control the device body 200 to work, the equipment body 200 can be household electrical appliances, wearable equipment, automotive electronics etc., for example, the LED lamp, earphone and on-vehicle air conditioner, off-line pronunciation microphone can direct mount on the LED lamp, the user sends far-field pronunciation and carries out light regulation through off-line pronunciation microphone 100, work such as open or close LED, realize the intellectuality of far-field pronunciation, this application off-line pronunciation microphone 100, only need equipment body 200 to provide the power, can direct mount and use as a standard microphone on equipment body 200 according to predetermineeing pronunciation, need not the user and debug the audio curve of microphone by oneself, key acoustics performance parameters such as leakproofness, far-field pronunciation equipment need not to design extra pronunciation interactive structure, thereby reduce the pronunciation interactive design cost of far-field pronunciation equipment.
The microphone interface 50 is used for connecting the off-line voice microphone 100 and the device body 200, and transmits a digital command and a power signal, the microphone interface 50 may be a USB interface, a Type-c interface, or the like, the specific structure is not limited, according to the Type of the transmitted signal, as shown in fig. 3, in an embodiment, the microphone interface 50 includes a power terminal VCC, a signal receiving terminal RXD, a signal transmitting terminal TXD, and a ground terminal GND, the power signal is transmitted through the power terminal VCC, and the digital command is transmitted through the signal receiving terminal RXD and the signal transmitting terminal TXD.
The voice pickup module 10 is used for picking up far-field voice, and in order to reduce the design cost, a single microphone may be used, and in one embodiment, the voice pickup module 10 includes an electret microphone.
The power conversion module 40 converts a power signal input by the device body 200 and outputs the power signal to each functional module in the offline voice microphone 100, the power conversion module 40 may adopt a switching power chip, a buck-boost circuit or other power conversion circuits, and a specific circuit structure may be selected according to requirements, as shown in fig. 2, in an embodiment, the power conversion module 40 includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a first inductor L1 and a three-terminal regulator U1;
the first end of the first capacitor C1, the first end of the second capacitor C2, the first end of the first inductor L1, and the input end of the three-terminal regulator U1 are interconnected and connected to the power supply terminal of the microphone interface 50, the second end of the first capacitor C1, the second end of the second capacitor C2, and the ground terminal of the three-terminal regulator U1 are all grounded, the second end of the first inductor L1 is the first power output terminal VDD1 of the power conversion module 40, the output end of the regulator and the first end of the third capacitor C3 are connected to form the second power output terminal VDD2 of the power conversion module 40, the second end of the third capacitor C3 is grounded, and the power conversion module 40 outputs a power signal to meet the power supply requirements of each functional module in the off-line voice microphone 100.
The input/output module 30 is used for transmitting digital commands, and can adopt a plurality of communication modes and corresponding signal conversion modules, as shown in fig. 3, in an embodiment, the input/output module 30 provides a standard UART serial port, and is responsible for converting a defined voice into a digital command of a protocol, which is used by the device body 200, wherein the input/output module 30 includes a first switch tube Q1, a second switch tube Q2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8;
an input end of the first switch tube Q1, a first end of the first resistor R1 and a first end of the second resistor R2 are all connected with a signal transmitting end TXD of the microphone interface 50, an output end of the first switch tube Q1, a first end of the fourth resistor R4 and a second end of the first resistor R1 are interconnected to form a signal transmitting end TXD1 of the input-output module 30, a second end of the second resistor R2 is connected with a first power output end VDD1 of the power conversion module 40, a controlled end of the first switch tube Q1 is connected with a first end of the third resistor R3, a second end of the third resistor R3 and a second end of the fourth resistor R4 are all connected with a second power output end 2 of the power conversion module 40, an input end of the second switch tube Q2, a first end of the fifth resistor R5 and a first end of the sixth resistor R6 are all connected with a signal receiving end RXD of the microphone interface 50, a first end of the second switch tube Q2, a first end of the second resistor R4642 and a second end of the eighth resistor R1 are interconnected to form a signal receiving end TXD 4630, the second end of the sixth resistor R6 is connected to the first power output terminal VDD1 of the power conversion module 40, the controlled end of the second switch Q2 is connected to the first end of the seventh resistor R7, and the second ends of the seventh resistor R7 and the eighth resistor R8 are both connected to the second power output terminal VDD2 of the power conversion module 40.
In this embodiment, the input/output module 30 includes two parallel asynchronous transceiving channels, when the power conversion module 40 works normally, the first switch tube Q1 and the second switch tube Q2 are turned on, the digital command transmitted by the input/output module 30 can be transmitted and received through the first switch tube Q1 and the second switch tube Q2, when the power conversion module 40 works abnormally, for example, the microphone interface 50 does not input a power signal, or the power conversion module 40 fails, the first switch tube Q1 and the second switch tube Q2 are turned off, and the digital command transmitted by the input/output module 30 can be transmitted and received through the first resistor R1 and the fifth resistor R5, so that the applicable environment and reliability of the offline voice microphone 100 can be improved.
The voice processing module 20 may be a controller or a processor, and in one embodiment, the voice processing module 20 includes an offline voice DSP unit, and a specific model of the offline voice DSP unit may be designed according to a functional requirement and a corresponding design, for example, a voice DSP unit of the WOX series, and the voice DSP unit of the WOX series may perform picking up, noise reduction, beam forming on far-field voice, support a wake-up word, up to 100 control command words, and support a variety of application scenarios of a home appliance, a wearable device, an automotive electronic device, and the like.
The off-line voice microphone 100 is composed of a voice pickup module 10, a voice processing module 20, a power conversion module 40, an input/output module 30 and a microphone interface 50, the voice pickup module 10 picks up far-field voice, the voice processing module 20 performs voice processing on the far-field voice and matches the processed far-field voice with a preset voice database, and outputs a control command corresponding to the far-field voice, the input/output module 30 converts the control command into a preset digital command to the microphone interface 50, and the off-line voice microphone 100 can be directly connected with the equipment body 200 through the microphone interface 50, and far-field voice equipment does not need to design an additional voice interaction structure, so that the design cost of voice interaction of the far-field voice equipment is reduced.
As shown in fig. 4 and 5, in an embodiment, the offline voice microphone 100 further includes an indication module 60 for indicating the power-on of the power conversion module 40, and the indication module 60 includes a ninth resistor R9 and a light emitting diode D1;
the first end of the ninth resistor R9 is connected to the second power output terminal VDD2 of the power conversion module 40, the second end of the ninth resistor R9 is connected to the anode of the light emitting diode D1, the cathode of the light emitting diode D1 is grounded, and when the power conversion module 40 is powered on, the light emitting diode D1 in the indication module 60 is powered on to illuminate, so as to perform an indication function.
With continued reference to fig. 4, in order to improve the storage capability and function of the voice processing module 20, in an embodiment, the offline voice microphone 100 further includes a memory 70 for storing a preset voice database, and the memory 70 may be a RAM, a ROM, or a FLASH memory.
As shown in fig. 6, the utility model discloses still provide a far field speech equipment, this far field speech equipment includes equipment body 200 and off-line voice microphone 100, and the above-mentioned embodiment is referred to this off-line voice microphone 100's specific structure, because this far field speech equipment has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and it is here no longer repeated. Wherein, equipment body 200 and off-line pronunciation microphone 100 electric connection, in this embodiment, equipment body 200 realizes far field speech control through connecting off-line pronunciation microphone 100, awakens up or controls equipment body 200 correspondingly according to far field pronunciation, and in one embodiment, equipment body 200 can be at least one in household electrical appliances, wearable equipment, the automotive electronics, for example LED lamp, earphone and vehicle air conditioner, and off-line pronunciation microphone can directly be installed on the LED lamp, and the user sends far field pronunciation and carries out work such as light control, opening or closing LED through off-line pronunciation microphone 100.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. An off-line voice microphone is characterized by comprising a voice pickup module, a voice processing module, a power supply conversion module, an input/output module and a microphone interface;
the signal output end of the voice pickup module is connected with the first signal end of the voice processing module, the second signal end of the voice processing module is connected with the first signal end of the input and output module, the power supply conversion module is respectively and electrically connected with the voice processing module, the input and output module, the voice pickup module and the microphone interface, and the input and output module is also electrically connected with the microphone interface;
the microphone interface is used for connecting the equipment body, transmitting a power supply signal to the power supply conversion module and transmitting a digital instruction between the equipment body and the input/output module;
the power supply conversion module is used for performing power supply conversion on the power supply signal and outputting a working power supply to the voice processing module, the input/output module and the voice pickup module;
the voice pickup module is used for picking up far-field voice and feeding the far-field voice back to the voice processing module;
the voice processing module is used for carrying out voice processing on the far-field voice, matching the processed far-field voice with a preset voice database, and outputting a control instruction corresponding to the far-field voice to the input and output module;
the input and output module is used for converting the control instruction into a preset digital instruction to the microphone interface and sending the preset digital instruction to the equipment body through the microphone interface so as to wake up or control the equipment body to work.
2. The offline voice microphone of claim 1, wherein the voice pickup module comprises an electret microphone.
3. The offline voice microphone according to claim 1, wherein the microphone interface comprises a power terminal, a signal receiving terminal, a signal transmitting terminal, and a ground terminal.
4. The offline voice microphone of claim 3, wherein the power conversion module comprises a first capacitor, a second capacitor, a third capacitor, a first inductor, and a three-terminal regulator;
the first end of the first capacitor, the first end of the second capacitor, the first end of the first inductor and the input end of the three-terminal voltage stabilizer are connected with each other and connected with the power supply end of the microphone interface, the second end of the first capacitor, the second end of the second capacitor and the grounding end of the three-terminal voltage stabilizer are all grounded, the second end of the first inductor is the first power output end of the power conversion module, the output end of the voltage stabilizer and the first end of the third capacitor are connected to form the second power output end of the power conversion module, and the second end of the third capacitor is grounded.
5. The off-line voice microphone of claim 4, wherein the input and output module comprises a first switch tube, a second switch tube, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, and an eighth resistor;
the input end of the first switch tube, the first end of the first resistor and the first end of the second resistor are all connected with the signal transmitting end of the microphone interface, the output end of the first switch tube, the first end of the fourth resistor and the second end of the first resistor are interconnected to form the signal transmitting end of the input/output module, the second end of the second resistor is connected with the first power output end of the power conversion module, the controlled end of the first switch tube is connected with the first end of the third resistor, the second end of the third resistor and the second end of the fourth resistor are all connected with the second power output end of the power conversion module, the input end of the second switch tube, the first end of the fifth resistor and the first end of the sixth resistor are all connected with the signal receiving end of the microphone interface, the output end of the second switch tube, the first end of the fourth resistor and the second end of the third resistor are all connected with the signal transmitting end of the microphone interface, the output end of the second switch tube is, The first end of the eighth resistor and the second end of the fifth resistor are interconnected to form a signal receiving end of the input/output module, the second end of the sixth resistor is connected with the first power output end of the power conversion module, the controlled end of the second switch tube is connected with the first end of the seventh resistor, and the second end of the seventh resistor and the second end of the eighth resistor are both connected with the second power output end of the power conversion module.
6. The offline voice microphone of claim 4, further comprising an indication module for indicating the power-up of the power conversion module, the indication module comprising a ninth resistor and a light-emitting diode;
the first end of the ninth resistor is connected with the second power output end of the power conversion module, the second end of the ninth resistor is connected with the anode of the light emitting diode, and the cathode of the light emitting diode is grounded.
7. The offline voice microphone of claim 1, wherein the voice processing module comprises an offline voice DSP unit.
8. The offline voice microphone of claim 1, wherein the offline voice microphone further comprises a memory for storing the preset voice database.
9. Far-field voice equipment, characterized by comprising an equipment body and the off-line voice microphone according to any one of claims 1-8, wherein the equipment body is electrically connected with the off-line voice microphone.
10. The far-field speech device of claim 9, wherein the device body is at least one of a home device, a wearable device, and an automotive electronic device.
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| CN202020378834.7U CN211744673U (en) | 2020-03-23 | 2020-03-23 | Offline voice microphone and far-field voice device |
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| CN202020378834.7U CN211744673U (en) | 2020-03-23 | 2020-03-23 | Offline voice microphone and far-field voice device |
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