CN105554611A - Earphone and implementation method thereof - Google Patents
Earphone and implementation method thereof Download PDFInfo
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- CN105554611A CN105554611A CN201511019926.6A CN201511019926A CN105554611A CN 105554611 A CN105554611 A CN 105554611A CN 201511019926 A CN201511019926 A CN 201511019926A CN 105554611 A CN105554611 A CN 105554611A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
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Abstract
The invention provides an earphone and an implementation method thereof. The earphone comprises: a USB type C interface used for receiving a digital signal comprising a digital audio signal and transmitted by an electronic device; a micro control unit connected with the USB type C interface and used for controlling the USB type C interface to receive the digital signal; a digital/analog conversion chip connected with the micro control unit and used for converting the digital audio signal into an analog audio signal; and a loudspeaker monomer connected with the digital/analog conversion chip and used for playing audio contents for a user according to the analog audio signal. According to the earphone provided by the invention, the USB type C interface on the electronic product can be used for supplying power to the earphone and transmitting audio to the earphone, and the earphone can be used for transmitting a control command to the electronic product.
Description
prioity claim
This application claims on December 29th, 2014 that submit, application number be CN201410837374.9, denomination of invention is the priority of the Chinese invention patent of " control method of earphone ambient sound and earphone ", all the elements of this patent of invention are all introduced at this.
Technical field
The present invention relates to a kind of audio frequency apparatus interface, particularly relating to a kind of USBtypeC of utilization interface and power and the earphone of transmission of audio data, is exactly a kind of earphone and its implementation specifically.
Background technology
Along with the emerging of new standard USBtypeC interface of USB interface, this have ultra-thin, at a high speed, powerful power supply capacity, support positive anti-plug, integrate several functions as power supply, transfer of data and video frequency output, the new interface of the multifrequency natures such as backward compatibility, although be also in the starting stage, due to the extensive use of the trans-corporation such as apple, Google product, this new standard interface is made to be subject to paying close attention to more and more widely.Especially the new MacBook of apple eliminates all data-interfaces except USBType-C interface without a break, and this allows it in aesthetic property and portability, has had again brand-new lifting.Apple is made great efforts like this and is promoted USBType-C interface, accelerates its development undoubtedly, thus allows USBType-C interface be applied on their mobile phone, panel computer, notebook or PC by more polyelectron manufacturer, and replaces other interfaces.
Earphone, as the modal accessory product of these main computer boxes, is indispensable, even earphone some user has been become to a part for their life.But, the earphone be widely used on the market is at present substantially all the simulation earphone of 3.5mm audio interface, utilize USB interface as the earphone of jack, or MicroUSB interface, i.e. previous generation standard usb interface, obvious this earphone to utilize the most emerging USBtypeC interface, therefore, the electronic product of assembling USBtypeC interface still cannot save audio interface, and this certainly will have influence on aesthetic property and the portability of electronic product.
Therefore, those skilled in the art urgently develop a kind of earphone, are undertaken powering and transfer of data by USBtypeC interface, thus bring better tonequality to experience and more intelligent and operating experience easily to user.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of earphone and its implementation, solves in prior art and cannot realize USBtypeC interface and the multiplexing problem of earphone interface.
In order to solve the problems of the technologies described above, the specific embodiment of the invention provides a kind of earphone, comprising: USBtypeC interface, for receiving the digital signal comprising digital audio and video signals that electronic equipment transmits; Micro-control unit, is connected with described USBtypeC interface, for controlling digital signal described in described USBtypeC interface; D/A switch chip, is connected with described micro-control unit, for converting described digital audio and video signals to simulated audio signal; Horn single body, is connected with described D/A switch chip, for according to described simulated audio signal to user's audio plays content.
The specific embodiment of the present invention also provides a kind of implementation method of earphone, comprising: utilize USBtypeC interface to receive the digital signal comprising digital audio and video signals from electronic equipment; D/A switch chip is utilized to convert described digital audio and video signals to simulated audio signal; According to described simulated audio signal to user's audio plays content.
Based on the embodiment of the invention described above, can learn that earphone of the present invention and its implementation at least have following beneficial effect or feature: the USBtypeC interface on electronic product can be utilized to power to earphone and to earphone transmission audio frequency, and earphone can be utilized to transmit control command to electronic product; Earphone tonequality is good; Earphone can realize high-order function without the need to battery, and cost is low, and tailored appearance is small and exquisite; Support the positive anti-plug of earphone, easy to use, Consumer's Experience is good.
It is to be understood that above-mentioned general description and following embodiment are only exemplary and illustrative, its can not limit the present invention for advocate scope.
Accompanying drawing explanation
Appended accompanying drawing is below a part for specification of the present invention, and it depicts example embodiment of the present invention, and appended accompanying drawing is used for principle of the present invention is described together with the description of specification.
The structural representation of the specific embodiment one of a kind of earphone that Fig. 1 provides for the specific embodiment of the invention;
The structural representation of the specific embodiment two of a kind of earphone that Fig. 2 provides for the specific embodiment of the invention;
The structural representation of the specific embodiment three of a kind of earphone that Fig. 3 provides for the specific embodiment of the invention;
The structural representation of the specific embodiment four of a kind of earphone that Fig. 4 provides for the specific embodiment of the invention;
The structural representation of the specific embodiment five of a kind of earphone that Fig. 5 provides for the specific embodiment of the invention;
The structural representation of the specific embodiment six of a kind of earphone that Fig. 6 provides for the specific embodiment of the invention;
The mode of connection figure of the USBtypeC interface of a kind of earphone that Fig. 7 provides for the specific embodiment of the invention;
The flow chart of the specific embodiment one of the implementation method of a kind of earphone that Fig. 8 provides for the specific embodiment of the invention;
The flow chart of the specific embodiment two of the implementation method of a kind of earphone that Fig. 9 provides for the specific embodiment of the invention;
The flow chart of the specific embodiment three of the implementation method of a kind of earphone that Figure 10 provides for the specific embodiment of the invention;
The flow chart of the specific embodiment four of the implementation method of a kind of earphone that Figure 11 provides for the specific embodiment of the invention;
The flow chart of the specific embodiment five of the implementation method of a kind of earphone that Figure 12 provides for the specific embodiment of the invention;
The flow chart of the specific embodiment six of the implementation method of a kind of earphone that Figure 13 provides for the specific embodiment of the invention.
Embodiment
Clearly understand for making the object of the embodiment of the present invention, technical scheme and advantage, below by with accompanying drawing and describe the spirit clearly demonstrating disclosed content in detail, any art technical staff is after the embodiment understanding content of the present invention, when can by the technology of content institute of the present invention teaching, be changed and modify, it does not depart from spirit and the scope of content of the present invention.
Schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.In addition, in drawings and the embodiments use element/component that is identical or like numerals will to be used to represent identical or similar portions.
About " first " used herein, " second " ... Deng, the not special meaning of censuring order or cis-position, is also not used to limit the present invention, and it is only in order to distinguish the element or operation that describe with constructed term.
About direction used herein term, such as: upper and lower, left and right, front or rear etc., be only the direction with reference to accompanying drawing.Therefore, the direction term of use is used to illustrate and is not used for limiting this creation.
About " comprising " used herein, " comprising ", " having ", " containing " etc., be open term, namely mean including but not limited to.
About used herein " and/or ", comprise the arbitrary of described things or all combine.
About term used herein " roughly ", " about " etc., in order to modify any can the quantity of microvariations or error, but this slight variations or error can't change its essence.Generally speaking, the scope of the microvariations that this type of term is modified or error can be 20% in some embodiments, can be 10% in some embodiments, can be 5% or other numerical value in some embodiments.It will be understood by those skilled in the art that the aforementioned numerical value mentioned can adjust according to actual demand, not as limit.
Some in order to the word that describes the application by lower or discuss in the other places of this specification, to provide those skilled in the art about guiding extra in the description of the application.
The structural representation of the specific embodiment one of a kind of earphone that Fig. 1 provides for the specific embodiment of the invention, as shown in Figure 1, the USBtypeC interface of earphone is connected with electronic equipment, after D/A switch chip converts described digital signal to simulated audio signal, be transferred to horn single body, thus realize the broadcasting of audio content.
This accompanying drawing embodiment comprises USBtypeC interface 10, micro-control unit 20, D/A switch chip 30, horn single body 40, wherein, the digital signal comprising digital audio and video signals that USBtypeC interface 10 transmits for receiving electronic equipment, electronic equipment can be mobile terminal, panel computer, notebook computer, desktop computer etc., and digital signal can be digital audio and video signals, control command, data message etc.; Micro-control unit 20 is connected with described USBtypeC interface 10, micro-control unit 20 receives described digital signal for controlling described USBtypeC interface 10, and micro-control unit 20 can be digital signal processor (DSP is as TiTMS320C6000 series), microprocessor (MCU is as the ATSAMG55G19A-UUT of Atmel), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA is as the Spartan3E series of Xilinx) etc.; D/A switch chip 30 is connected with described micro-control unit 20, and D/A switch chip 30 is for converting described digital audio and video signals to simulated audio signal; Horn single body 40 is connected with described D/A switch chip 30, horn single body 40 for according to described simulated audio signal to user's audio plays content.
See Fig. 1, D/A switch chip 30 is for converting described digital audio and video signals to simulated audio signal, horn single body 40 is for user's audio plays content, after USBtypeC interface headphones is inserted electronic product, the USBtypeC interface on electronic product can be utilized to power to earphone and to earphone transmission audio frequency, and earphone can be utilized to transmit control command to electronic product, such as, carry out telephone receiving, phone hangs up, earpiece volume, volume can also be controlled by the application program (APP) on electronic product balanced etc.; USBtypeC interface headphones tonequality is good; Earphone can realize high-order function without the need to battery, and cost is low, and tailored appearance is small and exquisite; Support the positive anti-plug of earphone, easy to use, Consumer's Experience is good.
The structural representation of the specific embodiment two of a kind of earphone that Fig. 2 provides for the specific embodiment of the invention, as shown in Figure 2, this earphone can also have microphone, for audio frequency input, needs to utilize analog/digital conversion chip to convert the analog signal of people to digital data transmission to electronic equipment.
In this accompanying drawing embodiment, this earphone also comprises microphone 50, analog/digital conversion chip 60, and wherein, microphone 50 is for changing into analog input signal by the sound of user; Analog/digital conversion chip 60 is connected with described microphone 50 and described micro-control unit 20, analog/digital conversion chip 60 sends described micro-control unit 20 to after converting described analog input signal to digital input signals, finally sends digital input signals to electronic equipment by micro-control unit 20.Wherein, digital input signals can be digitized audio message or control command etc.
See Fig. 2, the sound sent due to the mankind is analog signal, the signal of telecommunication is transformed into by microphone pickup, digital input signals is become again by analog/digital conversion, in addition, digital input signals can be audio content (such as carrying out voice-frequency telephony by earphone), also can be control command (such as by earphone based on speech recognition technology operating electronic equipment).The present invention has audio frequency input function, easy to use, and Consumer's Experience is good, expands the scope of application of the present invention.
The structural representation of the specific embodiment three of a kind of earphone that Fig. 3 provides for the specific embodiment of the invention, see Fig. 3, earphone of the present invention utilizes denoiser to realize active noise reduction (ANC) function, active noise reduction function is exactly produce the reverse sound wave contrary with environmental noise amplitude equal phase by noise reduction system, by noise cancellation, thus realize noise reduction.
In this accompanying drawing embodiment, this earphone also comprises the denoiser 70 be arranged between described D/A switch chip 30 and described horn single body 40, wherein, denoiser 70 is connected with described microphone 50, and denoiser 70 is for gathering environmental noise signal and producing the sound wave contrary with environmental noise amplitude equal phase thus offset by external noise by described microphone 50.
As shown in Figure 3, denoiser 70 is arranged between D/A switch chip 30 and horn single body 40, denoiser 70 gathers environmental noise signal by described microphone 50, in other embodiments of the invention, denoiser 70 also can carry environmental noise signal acquisition module, in addition, denoiser 70 can carry loudspeaker (i.e. Hi-Fi loudspeaker), for generation of the sound wave contrary with environmental noise amplitude equal phase, denoiser 70 also can utilize horn single body 40 to produce the sound wave contrary with environmental noise amplitude equal phase, thus external noise is balanced out, the present invention is not as limit, earphone of the present invention can allow user's bothering away from noise by configuration denoiser 70, improve user experience.In other specific embodiment of the present invention, be transferred to electronic equipment again after the voice data that microphone 50 gathers can be passed through the process of noise reduction algorithm, thus the fidelity of audio collection can be improved.
The structural representation of the specific embodiment four of a kind of earphone that Fig. 4 provides for the specific embodiment of the invention, as shown in Figure 4, earphone also has adjuster and/or switch, the size of denoiser noise reduction can be regulated, or directly close denoiser, do not carry out noise reduction, realize earphone and use corresponding noise reduction for varying environment, hommization more.
In this accompanying drawing embodiment, earphone also comprises adjuster 100 and/or switch 130, wherein, adjuster 100 is connected with described denoiser 70, and adjuster 100 is for switching described environmental noise signal and amplify or decay rank thus realize the adjustment of described denoiser 70 noise reduction size.If amplify described environmental noise signal, produce identical with environmental noise signal amplitude by denoiser 70, the signal that phase is 180 degree, thus can accurately offset environmental noise signal, realize high-level noise reduction; On the contrary, if decay described environmental noise signal, produced identical with the environmental noise signal amplitude after decay by denoiser 70, the signal that phase is 180 degree, thus environmental noise signal can be offset roughly, realize low level noise reduction, by said method, realize the adjustment of noise reduction size.Such as, user is on noisy bus, and adjuster 100 can be utilized to realize high-level noise reduction, and user is in relatively quietly office, can realize low level noise reduction by adjustment in use device 100.On bus, if utilize low level noise reduction, after denoising, ambient noise also can cause interference to user, in office, if use high-level noise reduction, after denoising, can bring the discomfort in a kind of noiseless laboratory to user.Switch 130 is connected with described denoiser 70, and switch 130 is for denoiser described in switch 70.Facilitating user when not extracing earphone, listening attentively to the sound of external environment condition, such as, user, when not extracing earphone, will talk with other people, can be realized the amplification of surrounding environment sound, thus hear surrounding environment sound by adjuster 100.
See Fig. 4, ambient noise is change, energy rank and the spectrum distribution of different location different time ambient noise are different, user can regulate arbitrarily the size of noise reduction according to the needs of specific environment, need not the unlatching of single selection decrease of noise functions or closedown, allow earphone can adapt to different noise circumstances, such as indoor at normal office, noise reduction is adjusted to 5dB can satisfy the demands, in trading market seething with people, noise reduction is then needed to adjust to more than 25dB, just can reach preferably noise reduction, classification decrease of noise functions makes earphone hommization more, strengthen user experience.
In the specific embodiment of the present invention, described adjuster 100 can be physical button, utilizes described physical button to switch described environmental noise signal and amplifies or decay rank; Physical button can be knob or add-substract key, if earphone is headphone, described adjuster 100 can be physical knob, and adjuster 100 can be arranged on headphone shell, by rotary actuator 100, can carry out classification noise reduction.In addition, adjuster 100 can be the virtual key on electronic equipment display interface, utilizes described virtual key to amplify or described environmental noise signal of decaying; Virtual key is for touching knob or touching add-substract key; Virtual knob can be the touch icon on electronic equipment display interface, such as, is touched and can be adjusted virtual knob, thus draw amplification or the decay of environmental noise signal by user.
In another embodiment of the present invention, no matter headphone or In-Ear Headphones, described denoiser 70 all can adopt feed forward type (FF, Feed-Forward) and/or reaction type noise reduction (FB, Feedback).In feed forward type noise reduction system, sampling microphone is positioned at earphone outside or earphone enclosure opening part, directly to gather the noise signal of earphone outside, after active noise reduction circuit (ANC) treatment circuit, the anti-phase noise of suitable amplitude is played out from loudspeaker, in order to offset the noise entered in earmuff, its topmost feature is the elimination loop of noise is open loop.And in reaction type noise reduction system, microphone to be positioned at before earphone inside loudspeaker or near, microphone gathers the noise signal of earmuff inside, again through the close loop negative feedback loop of ANC circuit composition, promote loudspeaker and produce inverse noise signal to offset the noise of earmuff inside, because the noise measuring microphone of reaction type active noise reduction system is in the inside of earmuff, automatically regulated by closed loop feedback, therefore the noise of this mode more near accurate feedback ear, the effect of noise reduction is also relatively better than feed forward type, but structure, circuit and debugging efforts want complicated relatively.Therefore the application is to the high little earplug (In-Ear Headphones) of volume requirement and be not that too high circumaural earphone all can adopt feed forward type and/or reaction type noise reduction system to volume requirement, facilitates earphone to produce, reduces production cost.
The structural representation of the specific embodiment five of a kind of earphone that Fig. 5 provides for the specific embodiment of the invention, as shown in Figure 5, earphone also has equalizer (EQ), EQ adjustment can be carried out, namely can regulate the amplitude of the various frequency content signal of telecommunication respectively, meet the individual demand of user.
In this accompanying drawing embodiment, this earphone also comprises equalizer 80, and equalizer 80 is arranged between described D/A switch chip 30 and described horn single body 40, and equalizer 80 is for adjusting the amplitude of each radio-frequency component of described simulated audio signal.Equalizer 80 also accessible site is inner at D/A switch chip 30.
See Fig. 5, the hearing frequencies segment limit of people is 20HZ ~ 20000HZ, the hearing frequencies section of people is divided into subwoofer, bass, middle pitch, alt, high pitch, ultrahigh frequency, according to the content that audio frequency is play, zoom in or out the volume of corresponding frequencies, meet the particular demands of user, such as user is listening instrument playing, because musical instrument pronunciation concentrates on middle pitch and alt, now equalizer 80 amplifies middle pitch, the volume of alt frequency range, reduce the volume of other frequency band, outstanding musical instrument feature, user is allowed to enjoy heaven's harmony, utilize equalizer not only can reduce the impact of intersymbol interference, and allow user according to self needs, adjust various frequency content signal of telecommunication amplification quantity, satisfying personalized tuning, further increase user experience.In other specific embodiment of the present invention, be transferred to horn single body 40 again after the voiceband data signal of analog/digital conversion chip 60 output and the audio signal of microphone collection can carry out audio mixing, strengthen acoustical quality, thus improve Consumer's Experience.
The structural representation of the specific embodiment six of a kind of earphone that Fig. 6 provides for the specific embodiment of the invention, as shown in Figure 6, earphone also has supply module, and USBtypeC interface can be utilized to power, and namely can be obtained the power supply input of 5V by USBtypeC interface.
In this accompanying drawing embodiment, this earphone also comprises supply module 90, and supply module 90 is arranged between described USBtypeC interface 10 and described micro-control unit 20, and supply module 90 is powered for giving described D/A switch chip 30 and described horn single body 40.In a specific embodiment of the present invention, described supply module 90 can be DC-DC (DC-dc conversion) supply module and/or LDO (low pressure difference linear voltage regulator) supply module.
See Fig. 6, USBtypeC interface can be utilized to power to the internal electronic component of earphone by supply module 90, earphone additionally need not install battery, can not produce battery pollution source, little to environmental impact, easy to use, expands the scope of application of earphone.
The mode of connection figure of the USBtypeC interface of a kind of earphone that Fig. 7 provides for the specific embodiment of the invention, as shown in Figure 7, described supply module 90 is connected with four VBUS pins of described USBtypeC interface 10, i.e. A4 pin, A9 pin, B4 pin, B9 pin; A6 pin and the A7 pin of described micro-control unit 20 and described USBtypeC interface 10 are connected; A resistance R is connected with between the A5 pin of described USBtypeC interface 10 and ground pin.In a specific embodiment of the present invention, the resistance of described resistance R can be 5100 ohm, and the present invention is not as limit.
The digital interface DP of USB2.0typeC (A6 pin) and DN (A7 pin) is mainly used to transmit data see Fig. 7, the USBtypeC interface mode of connection; CC1 (A5 pin) is used for configuring this earphone as USB from equipment; USB main equipment provides 5V power supply to USB from equipment by VBUS (i.e. HOST/HUB power to USB device power line).USB2.0typeC interface direct compatible analog audio signal input and output mode can be allowed by above-mentioned configuration.
The flow chart of the specific embodiment one of the implementation method of a kind of earphone that Fig. 8 provides for the specific embodiment of the invention, as shown in Figure 8, USBtypeC interface headphones is utilized to carry out audio content when listening to, first USBtypeC interface receives the digital signal comprising digital audio and video signals from electronic equipment, then D/A switch chip converts described digital audio and video signals to simulated audio signal, finally by horn single body (earplug or earmuff) to user's audio plays content.
In this accompanying drawing embodiment, the implementation method of described earphone comprises:
Step 101: utilize USBtypeC interface to receive the digital signal comprising digital audio and video signals from electronic equipment.Electronic equipment can be mobile terminal, panel computer, notebook computer, desktop computer etc., and digital signal can be digital audio and video signals, control command, data message etc.
Step 102: utilize D/A switch chip to convert described digital audio and video signals to simulated audio signal.
Step 103: according to described simulated audio signal to user's audio plays content.
Good see Fig. 8, USBtypeC interface headphones tonequality; Earphone can realize high-order function without the need to battery, and cost is low, and tailored appearance is small and exquisite; Support the positive anti-plug of earphone, easy to use, Consumer's Experience is good.
The flow chart of the specific embodiment two of the implementation method of a kind of earphone that Fig. 9 provides for the specific embodiment of the invention, as shown in Figure 9, utilize USBtypeC interface headphones also can carry out pickup, namely input audio-frequency information or control command by microphone to electronic equipment.
In this accompanying drawing embodiment, the implementation method of described earphone also comprises:
Step 104: utilize microphone that the sound of user is changed into analog input signal.In other embodiments of the invention, utilize microphone also the sound of environment can be changed into analog input signal, now this USBtypeC interface headphones can be used as audiomonitor use.
Step 105: send electronic equipment to after utilizing analog/digital conversion chip to convert described analog input signal to digital input signals.
See Fig. 9, the sound sent due to the mankind is analog signal, the signal of telecommunication is transformed into by microphone pickup, digital input signals is become again by analog/digital conversion, in addition, digital input signals can be audio content (such as carrying out voice-frequency telephony by earphone), also can be control command (such as by earphone based on speech recognition technology operating electronic equipment).The present invention has audio frequency input function, easy to use, and Consumer's Experience is good, expands the scope of application of the present invention.
The flow chart of the specific embodiment three of the implementation method of a kind of earphone that Figure 10 provides for the specific embodiment of the invention, as shown in Figure 10, earphone of the present invention utilizes denoiser to realize active noise reduction (ANC) function, active noise reduction function is exactly produce the reverse sound wave contrary with environmental noise amplitude equal phase by noise reduction system, by noise cancellation, thus realize noise reduction.
In this accompanying drawing embodiment, the implementation method of described earphone also comprises:
Step 106: utilize microphone to gather environmental noise signal.
Step 107: utilize denoiser produce the sound wave contrary with environmental noise signal amplitude equal phase thus offset by environmental noise.
See Figure 10, user's bothering away from noise can be allowed by denoiser noise reduction, improve user experience.In other specific embodiment of the present invention, be transferred to electronic equipment again after the voice data of microphone collection can be passed through the process of noise reduction algorithm, thus the fidelity of audio collection can be improved.
The flow chart of the specific embodiment four of the implementation method of a kind of earphone that Figure 11 provides for the specific embodiment of the invention, as shown in figure 11, utilize adjuster can regulate the size of denoiser noise reduction, realize earphone and use corresponding noise reduction for varying environment, namely the classification decrease of noise functions of earphone is realized, hommization more.
In this accompanying drawing embodiment, before step 107, the implementation method of described earphone also comprises:
Step 108: utilize adjuster to switch described environmental noise signal and amplify or decay rank, thus allow described denoiser produce the sound wave contrary with amplification or the environmental noise signal amplitude equal phase after decaying, and then realize the adjustment of denoiser noise reduction size.
Or, directly utilize switch opens or close denoiser (not indicating in figure).Facilitating user when not extracing earphone, listening attentively to the sound of external environment condition, such as, user, when not extracing earphone, will talk with other people, can be realized the amplification of surrounding environment sound, hear surrounding environment sound by adjuster.
See Figure 11, ambient noise is change, energy rank and the spectrum distribution of different location different time ambient noise are different, user can regulate arbitrarily the size of noise reduction according to the needs of specific environment, need not the unlatching of single selection decrease of noise functions or closedown, allow earphone can adapt to different noise circumstances, such as indoor at normal office, noise reduction is adjusted to 5dB can satisfy the demands, in trading market seething with people, noise reduction is then needed to adjust to more than 25dB, just can reach preferably noise reduction, classification decrease of noise functions makes earphone hommization more, strengthen user experience.
The flow chart of the specific embodiment five of the implementation method of a kind of earphone that Figure 12 provides for the specific embodiment of the invention, as shown in figure 12, equalizer (EQ) can be utilized to carry out EQ adjustment, namely can regulate the amplitude of the various frequency content signal of telecommunication respectively, meet the individual demand of user.
In this accompanying drawing embodiment, the implementation method of described earphone also comprises:
Step 109: utilize equalizer to adjust the amplitude of each radio-frequency component of described simulated audio signal.
See Figure 12, the hearing frequencies segment limit of people is 20HZ ~ 20000HZ, the hearing frequencies section of people is divided into subwoofer, bass, middle pitch, alt, high pitch, ultrahigh frequency, according to the content that audio frequency is play, zoom in or out the volume of corresponding frequencies, meet the particular demands of user, such as user is listening instrument playing, because musical instrument pronunciation concentrates on middle pitch and alt, now equalizer 80 amplifies middle pitch, the volume of alt frequency range, reduce the volume of other frequency band, outstanding musical instrument feature, user is allowed to enjoy heaven's harmony, utilize equalizer not only can reduce the impact of intersymbol interference, and allow user according to self needs, adjust various frequency content signal of telecommunication amplification quantity, satisfying personalized tuning, further increase user experience.In other specific embodiment of the present invention, be transferred to horn single body 40 again after the voiceband data signal of analog/digital conversion chip 60 output and the audio signal of microphone collection can carry out audio mixing, strengthen acoustical quality, thus improve Consumer's Experience.
The flow chart of the specific embodiment six of the implementation method of a kind of earphone that Figure 13 provides for the specific embodiment of the invention, as shown in figure 13, can utilize USBtypeC interface to power to earphone, namely can be obtained the power supply input of 5V by USBtypeC interface.
In this accompanying drawing embodiment, the implementation method of described earphone also comprises:
Step 110: utilize supply module to power to D/A switch chip, horn single body, microphone, analog/digital conversion chip, denoiser, adjuster and equalizer.Supply module can be DC-DC (DC-dc conversion) supply module and/or LDO (low pressure difference linear voltage regulator) supply module.
See Figure 13, USBtypeC interface can be utilized to power to the internal electronic component of earphone by supply module, earphone additionally need not install battery, can not produce battery pollution source, little to environmental impact, easy to use, expands the scope of application of earphone.
The invention provides a kind of USBtypeC interface headphones and its implementation, the USBtypeC interface on electronic product can be utilized to power directly to earphone and to earphone transmission voice data, and earphone can be utilized to electronic product transmission control command and voice data; Earphone tonequality is good; Earphone can realize high-order function without the need to battery, and cost is low, and earphone tailored appearance is small and exquisite; The present invention supports the positive anti-plug of earphone, and user is easy to use, and Consumer's Experience is good.
The embodiment of the invention discloses following content:
A1, a kind of earphone, this earphone comprises:
USBtypeC interface, for receiving the digital signal comprising digital audio and video signals that electronic equipment transmits;
Micro-control unit, is connected with described USBtypeC interface, for controlling digital signal described in described USBtypeC interface;
D/A switch chip, is connected with described micro-control unit, for converting described digital audio and video signals to simulated audio signal; And
Horn single body, is connected with described D/A switch chip, for according to described simulated audio signal to user's audio plays content.
A2, this earphone also comprise:
Microphone, for changing into analog input signal by the sound of user; And
Analog/digital conversion chip, is connected with described microphone and described micro-control unit, after converting described analog input signal to digital input signals, send described micro-control unit to.
A3, this earphone also comprise:
Be arranged at the denoiser between described D/A switch chip and described horn single body, be connected with described microphone, for gathering environmental noise signal by described microphone and producing the sound wave contrary with environmental noise signal amplitude equal phase thus environmental noise is offset.
A4, this earphone also comprise:
Adjuster, be connected with described denoiser, amplify or decay rank for switching described environmental noise signal, thus allow described denoiser produce the sound wave contrary with amplification or the environmental noise signal amplitude equal phase after decaying, and then realize the adjustment of described denoiser noise reduction size; Or
Switch, is connected with described denoiser, for denoiser described in switch.
A5, described adjuster are physical button, utilize described physical button to switch described environmental noise signal and amplify or decay rank.
A6, described physical button are knob or add-substract key.
A7, described adjuster are the virtual key on electronic equipment display interface, utilize described virtual key to transmit described digital signal thus amplification or described environmental noise signal of decaying by USBtypeC interface to described micro-control unit.
A8, described denoiser adopt feed forward type and/or reaction type noise reduction.
A9, described digital signal comprise control signal, and electronic equipment transmits described control signal by described USBtypeC interface to described micro-control unit and realizes the control of electronic equipment to earphone.
A10, this earphone also comprise:
Equalizer, is arranged between described D/A switch chip and described horn single body, for adjusting the amplitude of each radio-frequency component of described simulated audio signal.
A6 pin and the A7 pin of A11, described micro-control unit and described USBtypeC interface are connected.
A resistance R is connected with between the A1 pin of A12, described USBtypeC interface and ground pin.
The implementation method of A13, described earphone comprises:
USBtypeC interface is utilized to receive the digital signal comprising digital audio and video signals from electronic equipment;
D/A switch chip is utilized to convert described digital audio and video signals to simulated audio signal; And
According to described simulated audio signal to user's audio plays content.
The implementation method of A14, described earphone also comprises:
Utilize microphone that the sound of user is changed into analog input signal; And
Electronic equipment is sent to after utilizing analog/digital conversion chip to convert described analog input signal to digital input signals.
The implementation method of A15, described earphone also comprises:
Microphone is utilized to gather environmental noise signal; And
Denoiser is utilized to produce the sound wave contrary with environmental noise signal amplitude equal phase thus offset by environmental noise.
The implementation method of A16, described earphone also comprises:
Utilize adjuster to switch described environmental noise signal to amplify or decay rank, thus allow described denoiser produce the sound wave contrary with amplification or the environmental noise signal amplitude equal phase after decaying, and then realize the adjustment of denoiser noise reduction size; Or
Utilize switch opens or close denoiser.
The implementation method of A17, described earphone also comprises:
Equalizer is utilized to adjust the amplitude of each radio-frequency component of described simulated audio signal.
The above-mentioned embodiment of the present invention can be implemented in various hardware, Software Coding or both combinations.Such as, embodiments of the invention also can be the program code of the said procedure performed in digital signal processor (DigitalSignalProcessor, DSP).The present invention also can relate to the several functions that computer processor, digital signal processor, microprocessor or field programmable gate array (FieldProgrammableGateArray, FPGA) perform.Can configure above-mentioned processor according to the present invention and perform particular task, it has been come by the machine-readable software code or firmware code performing the ad hoc approach defining the present invention's announcement.Software code or firmware code can be developed into different program languages and different forms or form.Also can be different target platform composing software codes.But the different code pattern of the software code of executing the task according to the present invention and other types configuration code, type and language do not depart from spirit of the present invention and scope.
The foregoing is only the schematic embodiment of the present invention, under the prerequisite not departing from design of the present invention and principle, the equivalent variations that any those skilled in the art makes and amendment, all should belong to the scope of protection of the invention.
Claims (10)
1. an earphone, is characterized in that, this earphone comprises:
USBtypeC interface (10), for receiving the digital signal comprising digital audio and video signals that electronic equipment transmits;
Micro-control unit (20), is connected with described USBtypeC interface (10), receives described digital signal for controlling described USBtypeC interface (10);
D/A switch chip (30), is connected with described micro-control unit (20), for converting described digital audio and video signals to simulated audio signal; And
Horn single body (40), is connected with described D/A switch chip (30), for according to described simulated audio signal to user's audio plays content.
2. earphone as claimed in claim 1, it is characterized in that, this earphone also comprises:
Microphone (50), for changing into analog input signal by the sound of user; And
Analog/digital conversion chip (60), be connected with described microphone (50) and described micro-control unit (20), after converting described analog input signal to digital input signals, send described micro-control unit (20) to.
3. earphone as claimed in claim 2, it is characterized in that, this earphone also comprises:
Be arranged at the denoiser (70) between described D/A switch chip (30) and described horn single body (40), be connected with described microphone (50), for gathering environmental noise signal by described microphone (50) and producing the sound wave contrary with environmental noise signal amplitude equal phase thus environmental noise is offset.
4. earphone as claimed in claim 3, it is characterized in that, this earphone also comprises:
Adjuster (100), be connected with described denoiser (70), amplify or decay rank for switching described environmental noise signal, thus allow described denoiser (70) produce the sound wave contrary with amplification or the environmental noise signal amplitude equal phase after decaying, and then realize the adjustment of described denoiser (70) noise reduction size; And/or
Switch (130), is connected with described denoiser (70), for denoiser described in switch (70).
5. earphone as claimed in claim 4, it is characterized in that, described adjuster (100) is physical button, utilizes described physical button to switch described environmental noise signal and amplifies or decay rank.
6. earphone as claimed in claim 5, it is characterized in that, described physical button is knob or add-substract key.
7. earphone as claimed in claim 4, it is characterized in that, described adjuster (100) is the virtual key on electronic equipment display interface, utilizes described virtual key to transmit described digital signal thus amplification or described environmental noise signal of decaying by USBtypeC interface (10) to described micro-control unit (20).
8. earphone as claimed in claim 3, is characterized in that, no matter In-Ear or headphone, and described denoiser (70) all can adopt feedforward and/or reaction type noise reduction.
9. earphone as claimed in claim 1, it is characterized in that, described digital signal comprises control signal, and electronic equipment transmits described control signal by described USBtypeC interface (10) to described micro-control unit (20) and realizes the control of electronic equipment to earphone.
10. an implementation method for earphone, is characterized in that, the implementation method of described earphone comprises:
USBtypeC interface is utilized to receive the digital signal comprising digital audio and video signals from electronic equipment;
D/A switch chip is utilized to convert described digital audio and video signals to simulated audio signal; And
According to described simulated audio signal to user's audio plays content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201511019926.6A CN105554611A (en) | 2014-12-29 | 2015-12-29 | Earphone and implementation method thereof |
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| CN2014108373749 | 2014-12-29 | ||
| CN201410837374.9A CN104618829A (en) | 2014-12-29 | 2014-12-29 | Adjusting method of earphone environmental sound and earphone |
| CN201511019926.6A CN105554611A (en) | 2014-12-29 | 2015-12-29 | Earphone and implementation method thereof |
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| CN105554611A true CN105554611A (en) | 2016-05-04 |
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| CN201511019017.2A Active CN105554610B (en) | 2014-12-29 | 2015-12-29 | The adjusting method and earphone of earphone ambient sound |
| CN201521129314.8U Active CN205232422U (en) | 2014-12-29 | 2015-12-29 | Headset |
| CN201511019926.6A Pending CN105554611A (en) | 2014-12-29 | 2015-12-29 | Earphone and implementation method thereof |
| CN201521127217.5U Active CN205454027U (en) | 2014-12-29 | 2015-12-29 | Headset |
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| CN201511019017.2A Active CN105554610B (en) | 2014-12-29 | 2015-12-29 | The adjusting method and earphone of earphone ambient sound |
| CN201521129314.8U Active CN205232422U (en) | 2014-12-29 | 2015-12-29 | Headset |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104618829A (en) | 2015-05-13 |
| CN205232422U (en) | 2016-05-11 |
| CN105554610B (en) | 2019-01-04 |
| CN105554610A (en) | 2016-05-04 |
| CN205454027U (en) | 2016-08-10 |
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Application publication date: 20160504 |