The content of the invention
Based on this, in view of the shortcomings of the prior art, the present invention provides a kind of Type-C interface headphones and its implementation, withIt solves the above problems.
According to embodiments of the present invention, a kind of Type C interface earphone is provided, the earphone includes：Type C interface, is used forThe voice signal of receiving terminal apparatus transmission；Micro controller unit is connected with the Type C interface, for controlling the TypeC interface receives the voice signal；Feed forward noise reduction microphone, for detecting ambient noise signal；First Dolby circuit, for connecingThe ambient noise signal of feed forward noise reduction microphone output is received to carry out the first noise reduction process, and by the environment after noise reductionNoise signal transmission is to the micro controller unit；And second Dolby circuit, it is generated for receiving the micro controller unitAnalog voice signal to carry out the second noise reduction process, and the analog voice after the second noise reduction process is exported into signal output to raisingSound device；Wherein, the micro controller unit also carries out modulus to the ambient noise signal after the voice signal and the noise reductionConversion and digital-to-analogue conversion process are exported the analog voice signal to the described second drop with generating the analog voice signalNoise cancellation circuit.
The Type C interface earphones provided according to embodiments of the present invention by improving interlock circuit structure, reach earphone dropThe effect of making an uproar meets the needs of user converses under noisy environment and listens song, improves user experience.
Further, first Dolby circuit includes：First ESD is protected and anti-jamming circuit, is connected to the feedforwardNoise reduction microphone；And the first π types LC filtering and anti-jamming circuit, it is connected to the first ESD protection and anti-jamming circuit；ItsIn, the ambient noise signal by the first ESD protect and anti-jamming circuit handle after, then input to the first πType LC is filtered and anti-jamming circuit is for further processing, then phase adjusted rear output to the microprocessor unit.
Further, second Dolby circuit includes：2nd π types LC is filtered and anti-jamming circuit, is connected to described micro-Controller unit, to receive the analog voice signal；And the 2nd ESD protection and anti-jamming circuit, be connected to the 2nd πType LC filtering and anti-jamming circuit and the loud speaker；Wherein, treated the analog voice signal is by the microcontrollerUnit is exported to the 2nd π types LC filtering and anti-jamming circuit, be then passed through the 2nd ESD protection and anti-jamming circuit intoIt is exported after row noise reduction process to the loud speaker.
Further, the earphone further includes：Symmetrical sound hole, for receiving call voice signal；And call MikeWind is connected to the symmetrical sound hole and first Dolby circuit；Wherein, the symmetrical sound hole believes the call voiceOutput number is let out after wind energy and drop low wind noise processing to the call microphone.
Further, it is described that the call voice signal after drop low wind noise is also sent to described first by microphoneDolby circuit is to carry out noise reduction process and first Dolby circuit by the call voice signal transmission after noise reduction to instituteMicro controller unit is stated, to carry out analog-to-digital conversion and digital-to-analogue conversion, and will treated that simulation call voice signal passes through is describedType C interface is exported to the terminal device, to send correspondent to.
Further, the earphone further includes：Noise reduction switch is connected to first Dolby circuit, described for controllingWhether micro controller unit enters noise reduction mode.
Further, the earphone further includes：LED illuminating circuits communicate information to institute by the micro controller unitThe first Dolby circuit is stated, controls the instruction state of the LED illuminating circuits and LED light.
Further, the earphone further includes：Control circuit is connected to the microcontroller by first Dolby circuitDevice unit sends command signal by button, and the micro controller unit is output to by first Dolby circuit, to realizeCommand function.
Further, when the terminal device enters deep sleep, the finger is sent by the control circuitSignal is made, the micro controller unit starts to wake up the terminal device.
Another embodiment according to the present invention provides a kind of implementation method of Type C interface earphone, the described method includes：ProfitWith Type C interface its voice signal transmitted is received from terminal device；It is connect using Type C described in microprogrammed control unit controlMouth receives the voice signal；Ambient noise is detected using feed forward noise reduction microphone；Using the first Dolby circuit receive it is described beforeThe ambient noise signal of feedback noise reduction microphone output is to carry out the first noise reduction process, and by the ambient noise signal after noise reductionIt is transmitted to the micro controller unit；And receive the micro controller unit treated simulation language using the second Dolby circuitAnalog voice after second noise reduction process is exported signal output to loud speaker by sound signal to carry out the second noise reduction process；ItsIn, the micro controller unit also carries out analog-to-digital conversion sum number to the ambient noise signal after the voice signal and the noise reductionMould conversion process is exported the analog voice signal to second Dolby circuit with generating the analog voice signal.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present inventionSpecific embodiment be described in detail.Many details are elaborated in the following description in order to fully understand this hairIt is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be notSimilar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that when element is referred to as " being fixedly arranged on " another element, it can be directly on another elementOr there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected toTo another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side "," right side ", " on ", " under " and similar statement for illustrative purposes only rather than instruction or imply signified device or memberPart must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can be machineTool is connected or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be two membersConnection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may beConcrete meaning in bright.Term as used herein " and/or " include the arbitrary of one or more relevant Listed Items andAll combinations.
The object of the present invention is to provide a kind of Type C interface earphone, the earphone includes：Type C interface, for receivingThe voice signal of terminal device transmission；Micro controller unit is connected with the Type C interface, for the Type C to be controlled to connectMouth receives the voice signal；Feed forward noise reduction microphone, for detecting ambient noise signal；First Dolby circuit, for receivingThe ambient noise signal of the feed forward noise reduction microphone output is made an uproar the environment after noise reduction with carrying out the first noise reduction processAcoustical signal is transmitted to the micro controller unit；And second Dolby circuit, it generates for receiving the micro controller unitAnalog voice after second noise reduction process is exported signal output to raising one's voice by analog voice signal to carry out the second noise reduction processDevice；Wherein, the micro controller unit also carries out modulus turn to the ambient noise signal after the voice signal and the noise reductionIt changes with digital-to-analogue conversion process to generate the analog voice signal, and the analog voice signal is exported to second noise reductionCircuit.
A kind of Type C interface earphone provided according to the present invention, by improving interlock circuit structure, reaches earphone noise reductionThe effect of, meet the needs of user converses under noisy environment and listens song, improve user experience.
Fig. 1 is the structure diagram according to a kind of Type-C interface headphones of first embodiment of the invention, as shown in Figure 1,The earphone includes Type C interface 10, micro controller unit 20, feed forward noise reduction microphone 30, the first Dolby circuit 40, second dropNoise cancellation circuit 50 and loud speaker 60.Type C interface 10 is used for the voice signal of receiving terminal apparatus transmission, wherein terminal deviceCan be the equipment such as mobile terminal, tablet computer, laptop, desktop computer.Micro controller unit 20 and Type C interface10 connections, for controlling the voice signal that 10 receiving terminal apparatus of Type C interface transmits, wherein micro controller unit 20 can be withFor such as MCU controllers, analog-digital converter ADC and digital analog converter DAC are included.When earphone connects end by Type C interface 10After end equipment, terminal device starts to power to micro controller unit 20, and clock circuit and micro controller unit 20 are started to work.WhenThe voice signal of terminal device is transmitted to micro controller unit 20 by Type C interface 10, can pass through at ADC and DAC conversionsReason.Meanwhile the L/R feed forward noise reduction microphones for the earphone worn are separately positioned on L auricular conchas and R auricular conchas, for detecting environmentNoise signal, and make the first drop by being connected to the first Dolby circuit 40 of micro controller unit 10 and feed forward noise reduction microphone 30It makes an uproar and is inputted after handling to the ADC inside micro controller unit 20 and DAC to perform analog-to-digital conversion and digital-to-analogue conversion.Microcontroller listAfter ambient noise after first 20 pairs of voice signals and noise reduction process carries out ADC and DAC conversion process, analog voice signal is generated,It further exports to the second Dolby circuit 50.Second Dolby circuit 50 is connected to micro controller unit 20 and loud speaker 60, is used forIt receives, the analog voice signal that micro controller unit 20 generates, and will be after the second noise reduction process to carry out the second noise reduction processAnalog voice exports signal output to loud speaker 60, so as to complete to listen to process.Wherein, micro controller unit 20 is to the voiceAmbient noise signal after signal and the noise reduction carries out analog-to-digital conversion and digital-to-analogue conversion process to generate the analog voiceSignal, and the analog voice signal is exported to the second Dolby circuit 50.
Fig. 2 is according to the structure diagram of the first Dolby circuit of the Type-C interface headphones of the embodiment of the present invention, in Fig. 1First Dolby circuit 40 can include ESD protections and anti-jamming circuit 400 and π types LC filtering and anti-jamming circuit 410, wherein ESDProtection and anti-jamming circuit 400 may connect to the feed forward noise reduction microphone 30 of Fig. 1, and π types LC filtering and anti-jamming circuit 410 can connectIt is connected to ESD protections and anti-jamming circuit 400.The ambient noise signal that feed forward noise reduction microphone detects is protected and resisted by ESDAfter circuit 400 is disturbed to handle, then input to π types LC filtering and anti-jamming circuit 410 and be for further processing, it is then phase adjustedIt is exported afterwards to the microprocessor unit of Fig. 1 and is converted with being ADC and DAC.
In one embodiment, the ambient noise signal that the feed forward noise reduction microphone on L auricular conchas and R auricular conchas detects passes throughAfter ESD protections and anti-jamming circuit 400 are handled, π types LC filtering and anti-jamming circuit 410 are reached, after being then passed through phase adjustmentEnter micro controller unit 20.After micro controller unit 20 is to ambient noise signal and Speech processing, output simulation languageSound signal is for further processing to the second Dolby circuit.
Fig. 3 is according to the structure diagram of the second Dolby circuit of the Type-C interface headphones of the embodiment of the present invention, in Fig. 1Second Dolby circuit 50 can include π types LC filtering and anti-jamming circuit 500 and ESD protections and anti-jamming circuit 510, wherein π typesLC filtering and anti-jamming circuit 500 may connect to the micro controller unit 20 of Fig. 1, to receive the mould of the generation of micro controller unit 20Intend voice signal；ESD is protected and anti-jamming circuit 510 may connect to raising one's voice for π types LC filtering and anti-jamming circuit 500 and Fig. 1Device 60.Micro controller unit output treated analog voice signal is filtered to π types LC and anti-jamming circuit 500, then passes through againIt is exported after crossing ESD protections and the progress noise reduction process of anti-jamming circuit 510 to the loud speaker 60 of Fig. 1.
In one embodiment, after micro controller unit 20 is to ambient noise signal and Speech processing, output simulation languageSound signal can be implemented as further processing to the second Dolby circuit：Analog voice signal is output to π types LC filtering and resistsCircuit 500 is disturbed, after being then passed through ESD protections and the processing of anti-jamming circuit 510, analog voice output signal is generated and is simultaneously transmitted toLoud speaker 60, such as L/R loud speakers, so as to complete to listen to process.
Fig. 4 is the structure diagram according to a kind of Type-C interface headphones of second embodiment of the invention, as shown in Fig. 2,In addition to the structure comprising Fig. 1, which still further comprises symmetrical sound hole 70 and call microphone 80.Symmetrical sound hole 70For receiving call voice signal in call, which is conducive to let out wind energy and drop low wind noise, by call voiceAfter signal lets out wind energy and drop low wind noise processing, output to call microphone 80.Call voice signal enters call microphoneIt is after 80s, can be further transmitted to the first Dolby circuit 40 carry out that noise reduction process and the first Dolby circuit 40 will be after noise reduction it is logicalLanguage sound signal is transmitted to micro controller unit 20, to carry out analog-to-digital conversion and digital-to-analogue conversion process, and will treated simulationCall voice signal is exported by Type C interface 10 to the terminal device, to send correspondent to, so as to complete to converseJourney.
In one embodiment, voice signal is conducive to by symmetrical sound hole 70 after letting out wind energy and drop low wind noise during call,Enter call microphone 80, by ESD protection and anti-jamming circuit 400 after, then pass through π types LC filtering and anti-jamming circuit410 enter the ADC conversions and DAC conversions inside micro controller unit, pass through the Type C interface incoming terminal equipmentTo be transmitted to other side, communication process is completed.
Fig. 5 is according to a kind of structure diagram of Type-C interface headphones of third embodiment of the invention, further includes noise reductionSwitch 90, is connected to the first Dolby circuit 40, for controlling whether micro controller unit 20 enters noise reduction mode.Noise reduction switch 90Can be ANC On/Off switches, ANC On/Off switches pass through (such as the ESD therein protections and anti-dry of the first Dolby circuit 40Disturb circuit 400) after, whether control micro controller unit 20 enters noise reduction mode.
Fig. 6 is according to a kind of structure diagram of Type-C interface headphones of fourth embodiment of the invention, further includes LED hairsOptical circuit 100, LED illuminating circuits 100 are to communicate information to the first Dolby circuit 40 (such as wherein by micro controller unit 20ESD protections and anti-jamming circuit 400) after, the instruction state of control LED illuminating circuits 100 and LED light.
Fig. 7 is according to a kind of structure diagram of Type-C interface headphones of fifth embodiment of the invention, further includes controlCircuit 110 is connected to microcontroller list by the first Dolby circuit 40 (such as ESD therein protections and anti-jamming circuit 400)Member 20, control circuit 110 by its button (such as volume+,-, broadcasting/pause, etc.) send command signal, by the first dropNoise cancellation circuit 40 (such as ESD therein protections and anti-jamming circuit 400) is output to micro controller unit 20, to realize instruction work(Energy.
Further, when the terminal device remains static and enters deep sleep (work(is saved completelyConsumption state) when, command signal is sent by control circuit 110, microcontroller list is arrived by ESD protections and anti-jamming circuit 400Member 20 wakes up detection circuit by control and starts to wake up terminal device, such as wakes up the wake-up circuit of the terminal device.
Fig. 8 is according to a kind of structure diagram of Type-C interface headphones of sixth embodiment of the invention, further includes clockCircuit 120, after earphone connects terminal device by Type C interface 10, the terminal device starts to micro controller unit 20Power supply, clock circuit 120 and micro controller unit 20 are started to work.
Fig. 9 is the flow chart according to a kind of implementation method 900 of Type-C interface headphones of seventh embodiment of the invention.InstituteIt states method 900 and includes at least following steps：
Step 902：Using Type C interface its voice signal transmitted is received from terminal device；
Step 904：The voice signal is received using Type C interface described in microprogrammed control unit control；
Step 906：Ambient noise signal is detected using feed forward noise reduction microphone；
Step 908：The ambient noise signal of the feed forward noise reduction microphone output is received using the first Dolby circuitTo carry out the first noise reduction process, and the ambient noise signal after noise reduction is transmitted to the micro controller unit；
Step 910：Using the second Dolby circuit receive the micro controller unit treated analog voice signal with intoThe second noise reduction process of row, and the analog voice after the second noise reduction process is exported into signal output to loud speaker；
Wherein, the micro controller unit also carries out mould to the ambient noise signal after the voice signal and the noise reductionNumber conversion and digital-to-analogue conversion process are exported the analog voice signal to described second with generating the analog voice signalDolby circuit.
The implementation method of the Type C interface earphones provided according to the present invention, by improve the earphone of interlock circuit structure intoRow noise reduction process, meets the needs of user converses under noisy environment and listens song, improves user the effect of reaching earphone noise reductionUsage experience.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to oneEntity is distinguished with another entity, and without necessarily requiring or implying between these entities, there are any this actual passesSystem or order.Moreover, term " comprising ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, fromAnd cause the article for including a series of elements or equipment not only including those elements, but also its including being not explicitly listedIt his element or further includes as this article or the intrinsic element of equipment.In the absence of more restrictions, by languageThe element that sentence "including a ..." limits, it is not excluded that also exist in addition in the article including the element or equipmentIdentical element.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention.A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined hereinGeneral Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the inventionThe embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase oneThe most wide scope caused.