CN105551479A - Mobile terminal noise reduction method and apparatus thereof - Google Patents
Mobile terminal noise reduction method and apparatus thereof Download PDFInfo
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- CN105551479A CN105551479A CN201510967173.5A CN201510967173A CN105551479A CN 105551479 A CN105551479 A CN 105551479A CN 201510967173 A CN201510967173 A CN 201510967173A CN 105551479 A CN105551479 A CN 105551479A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
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Abstract
The invention discloses a mobile terminal noise reduction method and an apparatus thereof and belongs to the communication technology field. An earphone is plugged into an earphone seat of a mobile terminal. The apparatus comprises a signal acquisition module, a noise reduction processing module and a signal sending module, wherein the signal acquisition module is used for acquiring a noise signal collected by the earphone; the noise reduction processing module is used for carrying out noise reduction processing on the noise signal and generating a noise reduction signal which has a same amplitude with the noise signal and has an opposite phase with the noise signal; the signal sending module is used for sending the noise reduction signal to the earphone so as to carry out interference offset with the noise signal. A mobile apparatus of the invention is integrated into the mobile terminal, carries out noise reduction processing on noises collected by the earphone, is suitable for various kinds of earphones and possesses wide versatility. A noise reduction apparatus does not need to be additionally installed in the earphone so that a pin quantity of the earphone, a size and generation cost are reduced, and a good usage experience is provided for the user.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of mobile terminal noise-reduction method and device.
Background technology
Along with the development of mobile Internet, the mobile terminals such as mobile phone are more and more universal.Mobile phone is provided with earpiece holes, to be connected with insertion type headphone.In the prior art, integrated noise reduction system in earphone usually, to carry out noise reduction process to the noise gathered, existing noise cancelling headphone has two kinds: one is active noise reduction earphone, and another kind is passive noise cancelling headphone.
Active noise reduction earphone produces the sound wave equal with ambient noise amplitude, phase place is contrary by noise reduction system, interferes and disappear mutually, thus reach the effect of noise reduction with noise.Active noise reduction earphone uses digitalsignalprocessing (DSP) to go to eliminate extraneous noise, this technology can process most regular noise (talk, the noise of air-conditioning, the noises etc. of engine as people), but picture have people unexpected shout, this precipitate sound of sound etc. of closing the door then is difficult to be processed.
Passive noise cancelling headphone is the method adopting physics, namely forms enclosure space by surrounding ear or adopts the sound-proof materials such as silica gel earplugs to stop ambient noise.
But, no matter be active noise reduction earphone or passive noise cancelling headphone, all there is certain problem.Because active noise reduction earphone has the battery needed for noise reduction module and noise reduction module work, this will make noise cancelling headphone volume ratio comparatively large, is not easy to carry, and needs often charging or change battery, virtually for user brings many troubles.In addition, due to active noise reduction earphone adding Dolby circuit, this also higher to manufacturing technique requirent, this just causes active noise reduction earphone price all costly.Passive noise cancelling headphone adopts the method for physical isolation noise, generally can only isolate high frequency noise, not obvious to the noise reduction of low-frequency noise.And, because passive noise cancelling headphone creates an airtight space, causing danger because wearer can not hear the sound of surrounding sometimes, therefore, there is certain potential safety hazard when wearing passive noise cancelling headphone and going out.
Therefore, be necessary to provide a kind of mobile terminal noise-reduction method and device, avoid the generation of above-mentioned situation, reduce the volume of earphone, reduce the production cost of earphone, and improve the experience of user.
Summary of the invention
Fundamental purpose of the present invention is to propose a kind of mobile terminal noise-reduction method and device, is intended to solve the problems such as the volume of noise cancelling headphone is excessive, production cost is high, Consumer's Experience is poor in prior art.
For achieving the above object, a kind of mobile terminal denoising device of one provided by the invention, the earphone base of mobile terminal is plugged with earphone, and described device comprises: signal acquisition module, for obtaining the noise signal gathered by described earphone; Noise reduction process module, for carrying out noise reduction process to described noise signal, and produces the de-noising signal identical with described noise signal amplitude, phase place is contrary; Signal transmitting module, for described de-noising signal is sent to described earphone, offsets to carry out interference with described noise signal.
Alternatively, described device also comprises: opening module, for opening the decrease of noise functions of described mobile terminal; Noise reduction instruction sending module, for sending the instruction gathering noise signal to described earphone.
Alternatively, described device also comprises: detection module, is five-part form earphone for detecting described earphone, and described five-part form earphone comprises first kind five-part form earphone and Equations of The Second Kind five-part form earphone; Correspondingly, described signal acquisition module specifically for: when determining that described five-part form earphone is described first kind five-part form earphone, then obtain at least two-way music signal that described first kind five-part form earphone gathers, speech data signal and environmental noise signal; When determining that described five-part form earphone is described Equations of The Second Kind five-part form earphone, then obtain at least two-way environmental noise signal that described Equations of The Second Kind five-part form earphone gathers.
Alternatively, described device also comprises: detection module, is seven segmentation earphones for detecting described earphone; Correspondingly, described signal acquisition module specifically for: obtain at least two-way music signal, speech data signal and at least thinking environmental noise signal that described seven segmentation earphones gather.
Alternatively, when described noise signal comprises music signal and environmental noise signal, or when described noise signal comprises speech data signal and environmental noise signal, correspondingly, described noise reduction process module specifically for: the described music signal in described noise signal or described speech data signal are eliminated; Produce the de-noising signal identical with described environmental noise signal amplitude, phase place is contrary.
In addition, for achieving the above object, the present invention also proposes a kind of mobile terminal noise-reduction method, and the earphone base of mobile terminal is plugged with earphone, and described method comprises: obtain the noise signal gathered by described earphone; Noise reduction process is carried out to described noise signal, and produces the de-noising signal identical with described noise signal amplitude, phase place is contrary; Described de-noising signal is sent to described earphone, offsets to carry out interference with described noise signal.
Alternatively, come from the noise signal of described earphone collection in described acquisition before, described method also comprises: the decrease of noise functions opening described mobile terminal; The instruction gathering noise signal is sent to described earphone.
Alternatively, after the decrease of noise functions of the described mobile terminal of described unlatching, and described to send the instruction gathering noise signal to described earphone before, described method also comprises: detecting described earphone is five-part form earphone, and described five-part form earphone comprises first kind five-part form earphone and Equations of The Second Kind five-part form earphone; Correspondingly, the noise signal that described acquisition is gathered by described earphone comprises: when determining that described five-part form earphone is described first kind five-part form earphone, then obtain at least two-way music signal, speech data signal and environmental noise signal that described first kind five-part form earphone gathers; When determining that described five-part form earphone is described Equations of The Second Kind five-part form earphone, then obtain at least two-way environmental noise signal that described Equations of The Second Kind five-part form earphone gathers.
Alternatively, after the decrease of noise functions of the described mobile terminal of described unlatching, and described to send the instruction gathering noise signal to described earphone before, described method also comprises: detecting described earphone is seven segmentation earphones; Correspondingly, the noise signal that described acquisition is gathered by described earphone comprises: obtain at least two-way music signal, speech data signal and at least four road environmental noise signals that described seven segmentation earphones gather.
Alternatively, when described noise signal comprises music signal and environmental noise signal, or when described noise signal comprises speech data signal and environmental noise signal, correspondingly, described noise reduction process is carried out to described noise signal, and produce the de-noising signal identical with described noise signal amplitude, phase place is contrary, comprising: the described music signal in described noise signal or described speech data signal are eliminated; Produce the de-noising signal identical with described environmental noise signal amplitude, phase place is contrary.
The mobile terminal noise-reduction method that the present invention proposes and device, the noise signal gathered by earphone is obtained by signal acquisition module, noise reduction process module carries out noise reduction process to this noise signal, and produce the de-noising signal identical with noise signal amplitude, phase place is contrary, described de-noising signal is sent to earphone by signal transmitting module, offsets to carry out interference with noise signal.Thus utilize the denoising device of mobile terminal to carry out noise reduction process to the noise collected, be applicable to polytype earphone, there is wider versatility, and do not need in earphone to set up denoising device, and then reduce pin number and the volume of earphone, and then reduce the manufacturing cost of earphone, for user has good experience.
Accompanying drawing explanation
Fig. 1 is the hardware configuration schematic diagram realizing each embodiment of the present invention optional mobile terminal;
Fig. 2 is the wireless communication system schematic diagram of mobile terminal as shown in Figure 1;
The module diagram of the mobile terminal denoising device that Fig. 3 provides for first embodiment of the invention;
The structural drawing one of the five-part form headset plug that Fig. 4 a provides for each embodiment of the present invention;
The structural drawing two of the five-part form headset plug that Fig. 4 b provides for each embodiment of the present invention;
The structural drawing one of the seven segmentation headset plugs that Fig. 5 a provides for each embodiment of the present invention;
The structural drawing two of the seven segmentation headset plugs that Fig. 5 b provides for each embodiment of the present invention;
The module diagram of the mobile terminal denoising device that Fig. 6 provides for second embodiment of the invention;
The structural drawing of the first kind five-part form earphone that Fig. 7 provides for each embodiment of the present invention;
The structural drawing of the Equations of The Second Kind five-part form earphone that Fig. 8 provides for each embodiment of the present invention;
The structural drawing of the seven segmentation earphones that Fig. 9 provides for each embodiment of the present invention;
The schematic flow sheet of the mobile terminal noise-reduction method that Figure 10 provides for fourth embodiment of the invention;
The schematic flow sheet of the mobile terminal noise-reduction method that Figure 11 provides for fifth embodiment of the invention;
The schematic flow sheet of the mobile terminal noise-reduction method that Figure 12 provides for sixth embodiment of the invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The mobile terminal realizing each embodiment of the present invention is described referring now to accompanying drawing.In follow-up description, use the suffix of such as " module ", " parts " or " unit " for representing element only in order to be conducive to explanation of the present invention, itself is specific meaning not.Therefore, " module " and " parts " can mixedly use.
Mobile terminal can be implemented in a variety of manners.Such as, the terminal described in the present invention can comprise the such as mobile terminal of mobile phone, smart phone, notebook computer, digit broadcasting receiver, PDA (personal digital assistant), PAD (panel computer), PMP (portable media player), guider etc. and the fixed terminal of such as digital TV, desk-top computer etc.Below, suppose that terminal is mobile terminal.But it will be appreciated by those skilled in the art that except the element except being used in particular for mobile object, structure according to the embodiment of the present invention also can be applied to the terminal of fixed type.
Fig. 1 is the hardware configuration schematic diagram realizing each embodiment of the present invention optional mobile terminal.
Mobile terminal 100 can comprise wireless communication unit 110, A/V (audio/video) input block 120, user input unit 130, sensing cell 140, output unit 150, storer 160, interface unit 170, controller 180, power supply unit 190 and denoising device 300 etc.Fig. 1 shows the mobile terminal with various assembly, it should be understood that, does not require to implement all assemblies illustrated.Can alternatively implement more or less assembly.Will be discussed in more detail below the element of mobile terminal.
Wireless communication unit 110 generally includes one or more assembly, and it allows the wireless communication between mobile terminal 100 and wireless communication system or network.Such as, wireless communication unit can comprise at least one in broadcast reception module 111, mobile communication module 112, wireless Internet module 113, short range communication module 114 and positional information module 115.
Broadcast reception module 111 via broadcast channel from external broadcasting management server receiving broadcast signal and/or broadcast related information.Broadcast channel can comprise satellite channel and/or terrestrial channel.Broadcast management server can be generate and send the server of broadcast singal and/or broadcast related information or the broadcast singal generated before receiving and/or broadcast related information and send it to the server of terminal.Broadcast singal can comprise TV broadcast singal, radio signals, data broadcasting signal etc.And broadcast singal may further include the broadcast singal combined with TV or radio signals.Broadcast related information also can provide via mobile communications network, and in this case, broadcast related information can be received by mobile communication module 112.Broadcast singal can exist in a variety of manners, such as, it can exist with the form of the electronic service guidebooks (ESG) of the electronic program guides of DMB (DMB) (EPG), digital video broadcast-handheld (DVB-H) etc.Broadcast reception module 111 can by using the broadcast of various types of broadcast system Received signal strength.Especially, broadcast reception module 111 can by using such as multimedia broadcasting-ground (DMB-T), DMB-satellite (DMB-S), digital video broadcasting-hand-held (DVB-H), and the digit broadcasting system of the Radio Data System, received terrestrial digital broadcasting integrated service (ISDB-T) etc. of forward link media (MediaFLO) receives digital broadcasting.Broadcast reception module 111 can be constructed to be applicable to providing the various broadcast system of broadcast singal and above-mentioned digit broadcasting system.The broadcast singal received via broadcast reception module 111 and/or broadcast related information can be stored in storer 160 (or storage medium of other type).
Radio signal is sent at least one in base station (such as, access point, Node B etc.), exterior terminal and server and/or receives radio signals from it by mobile communication module 112.Various types of data that such radio signal can comprise voice call signal, video calling signal or send according to text and/or Multimedia Message and/or receive.
Wireless Internet module 113 supports the Wi-Fi (Wireless Internet Access) of mobile terminal.This module can be inner or be externally couple to terminal.Wi-Fi (Wireless Internet Access) technology involved by this module can comprise WLAN (WLAN) (Wi-Fi), Wibro (WiMAX), Wimax (worldwide interoperability for microwave access), HSDPA (high-speed downlink packet access) etc.
Short range communication module 114 is the modules for supporting junction service.Some examples of short-range communication technology comprise bluetooth
tM, radio-frequency (RF) identification (RFID), Infrared Data Association (IrDA), ultra broadband (UWB), purple honeybee
tMetc..
Positional information module 115 is the modules of positional information for checking or obtain mobile terminal.The typical case of positional information module is GPS (GPS).According to current technology, GPS module 115 calculates from the range information of three or more satellite and correct time information and for the Information application triangulation calculated, thus calculates three-dimensional current location information according to longitude, latitude and pin-point accuracy.Current, the method for calculating position and temporal information uses three satellites and by using the error of the position that goes out of an other satellite correction calculation and temporal information.In addition, GPS module 115 can carry out computing velocity information by Continuous plus current location information in real time.
A/V input block 120 is for audio reception or vision signal.A/V input block 120 can comprise camera 121 and microphone 1220, and the view data of camera 121 to the static images obtained by image capture apparatus in Video Capture pattern or image capture mode or video processes.Picture frame after process may be displayed on display unit 151.Picture frame after camera 121 processes can be stored in storer 160 (or other storage medium) or via wireless communication unit 110 and send, and can provide two or more cameras 1210 according to the structure of mobile terminal.Such acoustic processing can via microphones sound (voice data) in telephone calling model, logging mode, speech recognition mode etc. operational mode, and can be voice data by microphone 122.Audio frequency (voice) data after process can be converted to the formatted output that can be sent to mobile communication base station via mobile communication module 112 when telephone calling model.Microphone 122 can be implemented various types of noise and eliminate (or suppress) algorithm and receiving and sending to eliminate (or suppression) noise or interference that produce in the process of sound signal.
User input unit 130 can generate key input data to control the various operations of mobile terminal according to the order of user's input.User input unit 130 allows user to input various types of information, and keyboard, the young sheet of pot, touch pad (such as, detecting the touch-sensitive assembly of the change of the resistance, pressure, electric capacity etc. that cause owing to being touched), roller, rocking bar etc. can be comprised.Especially, when touch pad is superimposed upon on display unit 151 as a layer, touch-screen can be formed.
Sensing cell 140 detects the current state of mobile terminal 100, (such as, mobile terminal 100 open or close state), the position of mobile terminal 100, user for mobile terminal 100 contact (namely, touch input) presence or absence, the orientation of mobile terminal 100, the acceleration or deceleration of mobile terminal 100 move and direction etc., and generate order or the signal of the operation for controlling mobile terminal 100.Such as, when mobile terminal 100 is embodied as sliding-type mobile phone, sensing cell 140 can sense this sliding-type phone and open or close.In addition, whether whether sensing cell 140 can detect power supply unit 190 provides electric power or interface unit 170 to couple with external device (ED).
Interface unit 170 is used as at least one external device (ED) and is connected the interface that can pass through with mobile terminal 100.Such as, external device (ED) can comprise wired or wireless head-band earphone port, external power source (or battery charger) port, wired or wireless FPDP, memory card port, for connecting the port, audio frequency I/O (I/O) port, video i/o port, ear port etc. of the device with identification module.Identification module can be that storage uses the various information of mobile terminal 100 for authentication of users and can comprise subscriber identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM) etc.In addition, the device (hereinafter referred to " recognition device ") with identification module can take the form of smart card, and therefore, recognition device can be connected with mobile terminal 100 via port or other coupling arrangement.Interface unit 170 may be used for receive from external device (ED) input (such as, data message, electric power etc.) and the input received be transferred to the one or more element in mobile terminal 100 or may be used for transmitting data between mobile terminal and external device (ED).
In addition, when mobile terminal 100 is connected with external base, interface unit 170 can be used as to allow by it electric power to be provided to the path of mobile terminal 100 from base or can be used as the path that allows to be transferred to mobile terminal by it from the various command signals of base input.The various command signal inputted from base or electric power can be used as and identify whether mobile terminal is arranged on the signal base exactly.Output unit 150 is constructed to provide output signal (such as, sound signal, vision signal, alarm signal, vibration signal etc.) with vision, audio frequency and/or tactile manner.Output unit 150 can comprise display unit 151 and dio Output Modules 152 etc.
Display unit 151 may be displayed on the information of process in mobile terminal 100.Such as, when mobile terminal 100 is in telephone calling model, display unit 151 can show with call or other communicate (such as, text messaging, multimedia file are downloaded etc.) be correlated with user interface (UI) or graphic user interface (GUI).When mobile terminal 100 is in video calling pattern or image capture mode, display unit 151 can the image of display capture and/or the image of reception, UI or GUI that video or image and correlation function are shown etc.
Meanwhile, when display unit 151 and touch pad as a layer superposed on one another to form touch-screen time, display unit 151 can be used as input media and output unit.Display unit 151 can comprise at least one in liquid crystal display (LCD), thin film transistor (TFT) LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible display, three-dimensional (3D) display etc.Some in these displays can be constructed to transparence and watch from outside to allow user, and this can be called transparent display, and typical transparent display can be such as TOLED (transparent organic light emitting diode) display etc.According to the specific embodiment wanted, mobile terminal 100 can comprise two or more display units (or other display device), such as, mobile terminal can comprise outernal display unit (not shown) and inner display unit (not shown).Touch-screen can be used for detecting touch input pressure and touch input position and touch and inputs area.
When dio Output Modules 152 can be under the isotypes such as call signal receiving mode, call mode, logging mode, speech recognition mode, broadcast reception mode at mobile terminal, voice data convert audio signals that is that wireless communication unit 110 is received or that store in storer 160 and exporting as sound.And dio Output Modules 152 can provide the audio frequency relevant to the specific function that mobile terminal 100 performs to export (such as, call signal receives sound, message sink sound etc.).Dio Output Modules 152 can comprise loudspeaker, hummer etc.
Storer 160 software program that can store process and the control operation performed by controller 180 etc., or temporarily can store oneself through exporting the data (such as, telephone directory, message, still image, video etc.) that maybe will export.And, storer 160 can store about when touch be applied to touch-screen time the vibration of various modes that exports and the data of sound signal.
Storer 160 can comprise the storage medium of at least one type, described storage medium comprises flash memory, hard disk, multimedia card, card-type storer (such as, SD or DX storer etc.), random access storage device (RAM), static random-access memory (SRAM), ROM (read-only memory) (ROM), Electrically Erasable Read Only Memory (EEPROM), programmable read only memory (PROM), magnetic storage, disk, CD etc.And mobile terminal 100 can be connected the memory function of execute store 160 network storage device with by network cooperates.
Controller 180 controls the overall operation of mobile terminal usually.Such as, controller 180 performs the control relevant to voice call, data communication, video calling etc. and process.In addition, controller 180 can comprise the multi-media module 1810 for reproducing (or playback) multi-medium data, and multi-media module 1810 can be configured in controller 180, or can be configured to be separated with controller 180.Controller 180 can pattern recognition process, is identified as character or image so that input is drawn in the handwriting input performed on the touchscreen or picture.
Power supply unit 190 receives external power or internal power and provides each element of operation and the suitable electric power needed for assembly under the control of controller 180.
The external headphones that denoising device 300 docking port unit 170 connects the in working order lower noise gathered carries out noise reduction process, follow-uply will be described further denoising device 300.
Various embodiment described herein can to use such as computer software, the computer-readable medium of hardware or its any combination implements.For hardware implementation, embodiment described herein can by using application-specific IC (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, being designed at least one performed in the electronic unit of function described herein and implementing, in some cases, such embodiment can be implemented in controller 180.For implement software, the embodiment of such as process or function can be implemented with allowing the independent software module performing at least one function or operation.Software code can be implemented by the software application (or program) write with any suitable programming language, and software code can be stored in storer 160 and to be performed by controller 180.
So far, oneself is through the mobile terminal according to its functional description.Below, for the sake of brevity, by the slide type mobile terminal that describes in various types of mobile terminals of such as folded form, board-type, oscillating-type, slide type mobile terminal etc. exemplarily.Therefore, the present invention can be applied to the mobile terminal of any type, and is not limited to slide type mobile terminal.
Mobile terminal 100 as shown in Figure 1 can be constructed to utilize and send the such as wired and wireless communication system of data via frame or grouping and satellite-based communication system operates.
Describe wherein according to the communication system that mobile terminal of the present invention can operate referring now to Fig. 2.
Such communication system can use different air interfaces and/or Physical layer.Such as, the air interface used by communication system comprises such as frequency division multiple access (FDMA), time division multiple access (TDMA) (TDMA), CDMA (CDMA) and universal mobile telecommunications system (UMTS) (especially, Long Term Evolution (LTE)), global system for mobile communications (GSM) etc.As non-limiting example, description below relates to cdma communication system, but such instruction is equally applicable to the system of other type.
With reference to figure 2, cdma wireless communication system can comprise multiple mobile terminal 100, multiple base station (BS) 270, base station controller (BSC) 275 and mobile switching centre (MSC) 280.MSC280 is constructed to form interface with Public Switched Telephony Network (PSTN) 290.MSC280 is also constructed to form interface with the BSC275 that can be couple to base station 270 via back haul link.Back haul link can construct according to any one in some interfaces that oneself knows, described interface comprises such as E1/T1, ATM, IP, PPP, frame relay, HDSL, ADSL or xDSL.Will be appreciated that system as shown in Figure 2 can comprise multiple BSC2750.
Each BS270 can serve one or more subregion (or region), by multidirectional antenna or point to specific direction each subregion of antenna cover radially away from BS270.Or each subregion can by two or more antenna covers for diversity reception.Each BS270 can be constructed to support multiple parallel compensate, and each parallel compensate has specific frequency spectrum (such as, 1.25MHz, 5MHz etc.).
Subregion can be called as CDMA Channel with intersecting of parallel compensate.BS270 also can be called as base station transceiver subsystem (BTS) or other equivalent terms.Under these circumstances, term " base station " may be used for broadly representing single BSC275 and at least one BS270.Base station also can be called as " cellular station ".Or each subregion of particular B S270 can be called as multiple cellular station.
As shown in Figure 2, broadcast singal is sent to the mobile terminal 100 at operate within systems by broadcsting transmitter (BT) 295.Broadcast reception module 111 as shown in Figure 1 is arranged on mobile terminal 100 and sentences the broadcast singal receiving and sent by BT295.In fig. 2, several GPS (GPS) satellite 300 is shown.Satellite 300 helps at least one in the multiple mobile terminal 100 in location.
In fig. 2, depict multiple satellite 300, but understand, the satellite of any number can be utilized to obtain useful locating information.GPS module 115 as shown in Figure 1 is constructed to coordinate to obtain the locating information wanted with satellite 300 usually.Substitute GPS tracking technique or outside GPS tracking technique, can use can other technology of position of tracking mobile terminal.In addition, at least one gps satellite 300 optionally or extraly can process satellite dmb transmission.
As a typical operation of wireless communication system, BS270 receives the reverse link signal from various mobile terminal 100.Mobile terminal 100 participates in call usually, information receiving and transmitting communicates with other type.Each reverse link signal that certain base station 270 receives is processed by particular B S270.The data obtained are forwarded to relevant BSC275.BSC provides call Resourse Distribute and comprises the mobile management function of coordination of the soft switching process between BS270.The data received also are routed to MSC280 by BSC275, and it is provided for the extra route service forming interface with PSTN290.Similarly, PSTN290 and MSC280 forms interface, and MSC and BSC275 forms interface, and BSC275 correspondingly control BS270 so that forward link signals is sent to mobile terminal 100.
Based on above-mentioned mobile terminal hardware configuration and communication system, each embodiment of the inventive method is proposed.
As shown in Figure 3, first embodiment of the invention proposes a kind of mobile terminal denoising device, and mobile terminal denoising device 300 comprises opening module 310, noise reduction instruction sending module 320, signal acquisition module 330, noise reduction process module 340 and signal transmitting module 350.Wherein:
Opening module 310, for opening the decrease of noise functions of described mobile terminal.
Particularly, open decrease of noise functions by the interface that arranges of mobile terminal, also can open decrease of noise functions by the shortcut menu of mobile terminal.
Noise reduction instruction sending module 320, for sending the instruction gathering noise signal to described earphone.
Particularly, mobile terminal also comprises the earphone base around ear port, in electrical contact to carry out the mutual of voiceband data signal by earphone base and external headphones plug.
When detecting headset plug is inserted into the earphone base of mobile terminal, and when being electrically connected with mobile terminal inside, noise reduction instruction sending module 320 sends the instruction gathering noise signal to earphone.It will be appreciated by persons skilled in the art that when opening module 310 does not open decrease of noise functions, then cannot trigger noise reduction instruction sending module 320.
In order to those skilled in the art better understand the present invention, please refer to Fig. 4 a and Fig. 4 b, be applicable to five-part form earphone for earphone base and be described further.
As shown in fig. 4 a, five-part form headset plug comprises right microphone 401, ground connection 402, left microphone 403, R channel 404, L channel 405 and headset detection 406.
As shown in Figure 4 b, the diameter D1 of five-part form headset plug is 3mm, diameter D2 is 3.5mm; The total length L of headset plug is 14mm, and wherein: the length L1 of right microphone 401 is 2mm, the length L2 of ground connection 402 is 2.5mm, and the length L3 of left microphone 403 is 2.2mm, and the length L4 of R channel 404 is 2.2mm, and the length L5 of L channel 405 is 4.1mm.
Please with further reference to Fig. 5 a and Fig. 5 b, be applicable to seven segmentation earphones for earphone base and be described further.
As shown in Figure 5 a, seven segmentation headset plugs comprise the right microphone 502 of the first right microphone 501, second, the left microphone 505 of ground connection the 503, first left microphone 504, second, R channel 506, L channel 507 and headset detection 508.
As shown in Figure 5 b, the diameter diameter D1 of seven segmentation headset plugs is 3mm, diameter D2 is 3.5mm; The total length L of seven segmentation headset plugs is 14mm, wherein: the diameter L1 of the first right microphone 501 is 0.95mm, the length L2 of the second right microphone 502 is 1.25mm, the length L3 of ground connection 503 is 2.3mm, the length L4 of the first left microphone 504 is 1.2mm, the length L5 of the second left microphone 505 is 1.2mm, and the length L6 of R channel 506 is 2mm, and the length L7 of L channel 507 is 4.1mm.
It will be understood by those skilled in the art that, earphone base in the present embodiment is seven segmentation earphone bases, its structure and size are correspondingly arranged according to the structure of above-mentioned five-part form earphone and seven segmentation earphones and size, to meet the use of five-part form earphone and seven segmentation earphones simultaneously.
In other embodiments, all right simultaneous adaptation of this earphone base is in three-section earphone, four-section type headset etc.In actual applications, can arrange adaptively earphone base according to specific needs, the present invention does not do concrete restriction at this.
Signal acquisition module 330, for obtaining the noise signal gathered by described earphone.
Particularly, the instruction of the collection noise signal that earphone sends according to noise reduction instruction sending module 320, gather noise signal by microphone, and the noise signal of collection is carried out superposing and sends to denoising device 100, the noise signal obtaining earphone to make signal acquisition module 330 and collect.
Further, when earphone is three-section earphone, because three-section earphone does not have microphone, then utilize the microphone of mobile terminal to gather noise signal, and this noise signal is sent to signal acquisition module 330.
Further, when earphone is four-section type headset, because four-section type headset has a microphone, then utilize this microphone of four-section type headset to gather a road noise signal, and this noise signal is sent to signal acquisition module 330.
Further, when earphone is five-part form earphone, because five-part form earphone has two microphones (that is: left microphone 403 and right microphone 404), then utilize the microphone of five-part form earphone to gather two-way noise signal, this noise signal is carried out superposing and sends to signal acquisition module 330.
Further, when earphone is seven segmentation earphone, because seven segmentation earphones have four microphones (that is: the left microphone 505 of first right microphone 501, second right microphone the 502, first left microphone 504, second), then utilize the microphone of seven segmentation earphones to gather four road noise signals, this noise signal is carried out superposing and sends to signal acquisition module 330.
Further, when mobile terminal is in the state playing music, then the noise signal of microphone collection comprises music signal and environmental noise signal.
Further, when mobile terminal is in voice call state, then the noise signal of microphone collection comprises speech data signal and environmental noise signal.Described speech data signal can be produced in the process of establishing a communications link by mobile communication module 112 and other-end.
Noise reduction process module 340, for carrying out noise reduction process to described noise signal, and produces the de-noising signal identical with described noise signal amplitude, phase place is contrary.
Particularly, according to the noise signal that signal acquisition module 330 receives, noise reduction process module 340 produces and this de-noising signal that noise signal amplitude is identical, phase place is contrary, to carry out noise reduction process to this noise signal.
Further, when described noise signal comprises music signal and environmental noise signal, then the music signal in noise signal is first eliminated by noise reduction process module 340, then produces and the de-noising signal that environmental noise signal amplitude is identical, phase place is contrary in noise signal.
Further, when described noise signal comprises speech data signal and environmental noise signal, then the speech data signal in noise signal is first eliminated by noise reduction process module 340, then produces and the de-noising signal that environmental noise signal amplitude is identical, phase place is contrary in noise signal.
Signal transmitting module 350, for described de-noising signal is sent to described earphone, offsets to carry out interference with described noise signal.
Particularly, the de-noising signal after noise reduction process module 340 noise reduction process is sent in the corresponding loudspeaker path of earphone by signal transmitting module 350, to carry out interfering disappearing mutually with environmental noise signal.
The mobile terminal denoising device of the present embodiment, the decrease of noise functions of mobile terminal is opened by opening module 310, noise reduction instruction sending module 320 sends the instruction gathering noise signal to earphone, signal acquisition module 330 obtains the noise signal gathered by earphone, noise reduction process module 340 carries out noise reduction process to this noise signal, and produce the de-noising signal identical with noise signal amplitude, phase place is contrary, described de-noising signal is sent to earphone by signal transmitting module 350, offsets to carry out interference with noise signal.Thus utilize the denoising device of mobile terminal to carry out noise reduction process to the noise collected, be applicable to polytype earphone, there is wider versatility, and do not need in earphone to set up denoising device, and then reduce pin number and the volume of earphone, and then reduce the manufacturing cost of earphone, and user has good experience.
Please refer to Fig. 6, second embodiment of the invention further provides a kind of mobile terminal denoising device.In a second embodiment, described mobile terminal denoising device is compared with the first embodiment, difference is only, described device also comprises detection module 610, this detection module 610 is for detecting the headset type being inserted into mobile terminal earphone seat, and the type of earphone can be three-section earphone, four-section type headset, five-part form earphone, seven segmentation earphones.
In the present embodiment, detection module 610 detects described earphone is five-part form earphone.
Particularly, five-part form earphone comprises first kind five-part form earphone and Equations of The Second Kind five-part form earphone.
Please refer to Fig. 7, is the schematic cross-section of first kind five-part form earphone.The ear pad portion 720 that first kind five-part form earphone is provided with earplug portion 710 and is connected with earplug portion 710, loudspeaker 711 and microphone 712 is provided with in this earplug portion 710, the sender 7111 of loudspeaker 711 is towards ear pad portion 720, microphone 712 is between loudspeaker 711 and ear pad portion 720, and the sound inlet 7121 of microphone 712 is towards ear pad portion 720, namely the sound inlet 7121 of microphone 712 is identical with sender 7111 direction of loudspeaker 711, thus the voice signal that microphone 712 gathers is music signal, speech data signal and environmental noise signal etc.
Please refer to Fig. 8, is the schematic cross-section of Equations of The Second Kind five-part form earphone.The ear pad portion 820 that Equations of The Second Kind five-part form earphone is provided with earplug portion 810 and is connected with earplug portion 810, loudspeaker 811 and microphone 812 is provided with in this earplug portion 810, the sender 8111 of loudspeaker 811 is towards ear pad portion 820, microphone 812 is positioned at loudspeaker 811 one end away from ear pad portion 820, and the sound inlet 8121 of microphone 812 deviates from loudspeaker 811, namely the sound inlet 8121 of microphone 812 is contrary with sender 8111 direction of loudspeaker 811, thus the voice signal that microphone 812 gathers is environmental noise signal.
Detection module 610 is also first kind five-part form earphone or Equations of The Second Kind five-part form earphone for detecting described five-part form earphone.
When detection module 610 determines that five-part form earphone is first kind five-part form earphone, then signal acquisition module 330 obtains at least two-way music signal, speech data signal and the environmental noise signal that first kind five-part form earphone gathers, wherein,
This two-way music signal, speech data signal and environmental noise signal refer to music signal, speech data signal and environmental noise signal that the left microphone that comes from first kind five-part form earphone and right microphone gather respectively.
Correspondingly, noise reduction process module 340 pairs of music signals, speech data signals are eliminated, then produce the de-noising signal identical with environmental noise signal amplitude, phase place is contrary.This de-noising signal is sent to earphone by signal transmitting module 350, offsets to carry out interference with environmental noise signal.
When detection module 610 determines that five-part form earphone is Equations of The Second Kind five-part form earphone, then signal acquisition module 330 obtains at least two-way environmental noise signal that Equations of The Second Kind five-part form earphone gathers, wherein,
This two-way environmental noise signal refers to the environmental noise signal that the left microphone that comes from Equations of The Second Kind five-part form earphone and right microphone gather respectively.
Correspondingly, noise reduction process module 340 produces the de-noising signal identical with environmental noise signal amplitude, phase place is contrary.This de-noising signal is sent to earphone by signal transmitting module 350, offsets to carry out interference with environmental noise signal.
The mobile terminal denoising device of the present embodiment, when detection module 610 Test earphone is five-part form earphone, detecting this five-part form earphone is more further first kind five-part form earphone or Equations of The Second Kind five-part form earphone, thus the noise signal triggering 340 pairs of signal acquisition modules 330 acquisitions of noise reduction process module carries out noise reduction process, de-noising signal after noise reduction process is sent to earphone by signal transmitting module 350, thus produce corresponding noise signal according to the type of earphone, there is good noise reduction, think that user brings ultimate attainment experience.
Third embodiment of the invention further provides a kind of mobile terminal denoising device.In the third embodiment, described mobile terminal denoising device is compared with the second embodiment, and difference is only:
It is seven segmentation earphones that detection module 610 detects described earphone.
Please refer to Fig. 9, is the schematic cross-section of seven segmentation earphones.The ear pad portion 920 that seven segmentation earphones are provided with earplug portion 910 and are connected with earplug portion 910, loudspeaker 911, first microphone 912 and second microphone 913 is provided with in this earplug portion 910, the sender 9111 of loudspeaker 911 is towards ear pad portion 920, first microphone 912 is positioned at loudspeaker 911 one end away from ear pad portion 920, and the sound inlet 9121 of the first microphone 912 deviates from loudspeaker 911, namely the sound inlet 9121 of the first microphone 912 is contrary with sender 9111 direction of loudspeaker 911, thus the voice signal that the first microphone 912 gathers is environmental noise signal.Second microphone 913 is between loudspeaker 911 and ear pad portion 920, and the sound inlet 9131 of second microphone 913 is towards ear pad portion 920, namely the sound inlet 9121 of second microphone 913 is identical with sender 9111 direction of loudspeaker 911, thus the voice signal that second microphone 913 gathers is music signal, speech data signal and environmental noise signal etc.
Correspondingly, signal acquisition module 330 obtains at least two-way music signal, speech data signal and at least four road environmental noise signals that seven segmentation earphones gather.Wherein, at least two-way music signal comes from the left second microphone of seven segmentation earphones and right second microphone respectively, at least two-way speech data signal comes from the left second microphone of seven segmentation earphones and right second microphone respectively, and at least four road environmental noise signals are respectively from a left side first microphone of seven segmentation earphones, left second microphone, right first microphone and right second microphone.
The noise signal that noise reduction process module 340 pairs of signal acquisition modules 330 gather carries out noise reduction process.
Particularly, noise reduction process module 340 first processes music signal and speech data signal, namely eliminates the music signal of left second microphone and right second microphone collection, speech data signal; Then, noise reduction process module 340 processing environment noise signal, because the first microphone and second microphone acquire same environmental noise signal respectively, that is, same environmental noise signal is collected twice, thus noise reduction process module 340 is first weighted process to the environmental noise signal of left first microphone and left second microphone collection when processing, two weights by frequency place each in environmental noise signal add up to 1, then produce and the de-noising signal that environmental noise signal amplitude is identical, phase place is contrary after weighting process.Noise reduction process module 340 to right first microphone and the noise reduction process of right second microphone and the noise reduction process of left first microphone and left second microphone similar, do not repeat them here.
This de-noising signal is sent to earphone by signal transmitting module 350 again, offsets to carry out interference with environmental noise signal.
The mobile terminal denoising device of the present embodiment, when detection module 610 Test earphone is seven segmentation earphone, trigger noise reduction process module 340 and first eliminate music signal and speech data signal, again process is weighted to environmental noise signal, and produce the de-noising signal that amplitude is identical, phase place is contrary, de-noising signal after noise reduction process is sent to earphone by signal transmitting module 350, thus produce corresponding noise signal according to the type of earphone, there is good noise reduction, think that user brings ultimate attainment experience.
Fourth embodiment of the invention provides a kind of mobile terminal noise-reduction method further, please refer to Figure 10, and described method comprises step:
S1010, opens the decrease of noise functions of described mobile terminal;
Particularly, open decrease of noise functions by the interface that arranges of mobile terminal, also can open decrease of noise functions by the shortcut menu of mobile terminal.
S1020, sends the instruction gathering noise signal to described earphone;
Particularly, mobile terminal also comprises the earphone base around ear port, in electrical contact to carry out the mutual of voiceband data signal by earphone base and external headphones plug.
When detecting headset plug is inserted into the earphone base of mobile terminal, and when being electrically connected with mobile terminal inside, send the instruction gathering noise signal to earphone.It will be appreciated by persons skilled in the art that when not opening decrease of noise functions, then can not enter S1020.
In order to those skilled in the art better understand the present invention, please refer to Fig. 4 a and Fig. 4 b, be applicable to five-part form earphone for earphone base and be described further.
As shown in fig. 4 a, five-part form headset plug comprises right microphone 401, ground connection 402, left microphone 403, R channel 404, L channel 405 and headset detection 406.
As shown in Figure 4 b, the diameter D1 of five-part form headset plug is 3mm, diameter D2 is 3.5mm; The total length L of headset plug is 14mm, and wherein: the length L1 of right microphone 401 is 2mm, the length L2 of ground connection 402 is 2.5mm, and the length L3 of left microphone 403 is 2.2mm, and the length L4 of R channel 404 is 2.2mm, and the length L5 of L channel 405 is 4.1mm.
Please with further reference to Fig. 5 a and Fig. 5 b, be applicable to seven segmentation earphones for earphone base and be described further.
As shown in Figure 5 a, seven segmentation headset plugs comprise the right microphone 502 of the first right microphone 501, second, the left microphone 505 of ground connection the 503, first left microphone 504, second, R channel 506, L channel 507 and headset detection 508.
As shown in Figure 5 b, the diameter diameter D1 of seven segmentation headset plugs is 3mm, diameter D2 is 3.5mm; The total length L of seven segmentation headset plugs is 14mm, wherein: the diameter L1 of the first right microphone 501 is 0.95mm, the length L2 of the second right microphone 502 is 1.25mm, the length L3 of ground connection 503 is 2.3mm, the length L4 of the first left microphone 504 is 1.2mm, the length L5 of the second left microphone 505 is 1.2mm, and the length L6 of R channel 506 is 2mm, and the length L7 of L channel 507 is 4.1mm.
It will be understood by those skilled in the art that, earphone base in the present embodiment is seven segmentation earphone bases, its structure and size are correspondingly arranged according to the structure of above-mentioned five-part form earphone and seven segmentation earphones and size, to meet the use of five-part form earphone and seven segmentation earphones simultaneously.
In other embodiments, all right simultaneous adaptation of this earphone base is in three-section earphone, four-section type headset etc.In actual applications, can arrange adaptively earphone base according to specific needs, the present invention does not do concrete restriction at this.
S1030, obtains the noise signal gathered by described earphone.
Particularly, earphone, according to the instruction gathering noise signal, gathers noise signal by microphone, and is carried out superposing and sending to mobile terminal by the noise signal of collection, to obtain the noise signal that earphone collects.
Further, when earphone is three-section earphone, because three-section earphone does not have microphone, then utilize the microphone of mobile terminal to gather noise signal, and this noise signal is sent to mobile terminal.
Further, when earphone is four-section type headset, because four-section type headset has a microphone, then utilize this microphone of four-section type headset to gather a road noise signal, and this noise signal is sent to mobile terminal.
Further, when earphone is five-part form earphone, because five-part form earphone has two microphones (that is: left microphone 403 and right microphone 404), then utilize the microphone of five-part form earphone to gather two-way noise signal, this noise signal is carried out superposing and sending to mobile terminal.
Further, when earphone is seven segmentation earphone, because seven segmentation earphones have four microphones (that is: the left microphone 505 of first right microphone 501, second right microphone the 502, first left microphone 504, second), then utilize the microphone of seven segmentation earphones to gather four road noise signals, this noise signal is carried out superposing and sending to mobile terminal.
Further, when mobile terminal is in the state playing music, then the noise signal of microphone collection comprises music signal and environmental noise signal.
Further, when mobile terminal is in voice call state, then the noise signal of microphone collection comprises speech data signal and environmental noise signal.Described speech data signal can be produced in the process of establishing a communications link by mobile communication module 112 and other-end.
S1040, carries out noise reduction process to described noise signal, and produces the de-noising signal identical with described noise signal amplitude, phase place is contrary.
Particularly, according to the noise signal received, produce and this de-noising signal that noise signal amplitude is identical, phase place is contrary, to carry out noise reduction process to this noise signal.
Further, when described noise signal comprises music signal and environmental noise signal, then first the music signal in noise signal is eliminated, then produce and the de-noising signal that environmental noise signal amplitude is identical, phase place is contrary in noise signal.
Further, when described noise signal comprises speech data signal and environmental noise signal, then first the speech data signal in noise signal is eliminated, then produce and the de-noising signal that environmental noise signal amplitude is identical, phase place is contrary in noise signal.
S1050, sends to described earphone by described de-noising signal, offsets to carry out interference with described noise signal.
Particularly, the de-noising signal after noise reduction process is sent in the corresponding loudspeaker path of earphone, to carry out interfering disappearing mutually with environmental noise signal.
The mobile terminal noise-reduction method of the present embodiment, by opening the decrease of noise functions of mobile terminal, the instruction gathering noise signal is sent to earphone, obtain the noise signal gathered by earphone, noise reduction process is carried out to this noise signal, and produce the de-noising signal identical with noise signal amplitude, phase place is contrary, and described de-noising signal is sent to earphone, offset to carry out interference with noise signal.Thus noise reduction process is carried out to the noise collected, be applicable to polytype earphone, there is wider versatility, reduce pin number and the volume of earphone, and then reduce the manufacturing cost of earphone, and user has good experience.
Please refer to Figure 11, fifth embodiment of the invention provides a kind of mobile terminal noise-reduction method.Described method comprises step:
S1110, detects the headset type being inserted into mobile terminal earphone seat;
In the present embodiment, the type of earphone can be three-section earphone, four-section type headset, five-part form earphone, seven segmentation earphones.
S1120, detecting described earphone is five-part form earphone;
Particularly, five-part form earphone comprises first kind five-part form earphone and Equations of The Second Kind five-part form earphone.
Incorporated by reference to Fig. 7, it is the schematic cross-section of first kind five-part form earphone.The ear pad portion 720 that first kind five-part form earphone is provided with earplug portion 710 and is connected with earplug portion 710, loudspeaker 711 and microphone 712 is provided with in this earplug portion 710, the sender 7111 of loudspeaker 711 is towards ear pad portion 720, microphone 712 is between loudspeaker 711 and ear pad portion 720, and the sound inlet 7121 of microphone 712 is towards ear pad portion 720, namely the sound inlet 7121 of microphone 712 is identical with sender 7111 direction of loudspeaker 711, thus the voice signal that microphone 712 gathers is music signal, speech data signal and environmental noise signal etc.
Incorporated by reference to Fig. 8, it is the schematic cross-section of Equations of The Second Kind five-part form earphone.The ear pad portion 820 that Equations of The Second Kind five-part form earphone is provided with earplug portion 810 and is connected with earplug portion 810, loudspeaker 811 and microphone 812 is provided with in this earplug portion 810, the sender 8111 of loudspeaker 811 is towards ear pad portion 820, microphone 812 is positioned at loudspeaker 811 one end away from ear pad portion 820, and the sound inlet 8121 of microphone 812 deviates from loudspeaker 811, namely the sound inlet 8121 of microphone 812 is contrary with sender 8111 direction of loudspeaker 811, thus the voice signal that microphone 812 gathers is environmental noise signal.
S1130, detecting described five-part form earphone is first kind five-part form earphone or Equations of The Second Kind five-part form earphone;
When determining described five-part form earphone during first kind five-part form earphone, then enter S1140;
When determining described five-part form earphone during Equations of The Second Kind five-part form earphone, then enter S1160;
S1140, obtains at least two-way music signal, speech data signal and environmental noise signal that first kind five-part form earphone gathers;
Particularly, this two-way music signal, speech data signal and environmental noise signal refer to music signal, speech data signal and environmental noise signal that the left microphone that comes from first kind five-part form earphone and right microphone gather respectively.
S1150, eliminates music signal, speech data signal, then produces the de-noising signal identical with environmental noise signal amplitude, phase place is contrary; After S1150, enter S1180;
S1160, obtains at least two-way environmental noise signal that Equations of The Second Kind five-part form earphone gathers;
Particularly, this two-way environmental noise signal refers to the environmental noise signal that the left microphone that comes from Equations of The Second Kind five-part form earphone and right microphone gather respectively.
S1170, produces the de-noising signal identical with environmental noise signal amplitude, phase place is contrary;
S1180, sends to earphone by this de-noising signal, offsets to carry out interference with environmental noise signal.
The mobile terminal noise-reduction method of the present embodiment, when Test earphone is five-part form earphone, detecting this five-part form earphone is more further first kind five-part form earphone or Equations of The Second Kind five-part form earphone, thus the noise signal triggered obtaining carries out noise reduction process, again the de-noising signal after noise reduction process is sent to earphone, thus produce corresponding noise signal according to the type of earphone, there is good noise reduction, think that user brings ultimate attainment experience.
Please refer to Figure 12, sixth embodiment of the invention provides a kind of mobile terminal noise-reduction method.Described method comprises step:
S1210, detects the headset type being inserted into mobile terminal earphone seat;
In the present embodiment, the type of earphone can be three-section earphone, four-section type headset, five-part form earphone, seven segmentation earphones.
S1220, detecting described earphone is five-part form earphone;
Incorporated by reference to Fig. 9, it is the schematic cross-section of seven segmentation earphones.The ear pad portion 920 that seven segmentation earphones are provided with earplug portion 910 and are connected with earplug portion 910, loudspeaker 911, first microphone 912 and second microphone 913 is provided with in this earplug portion 910, the sender 9111 of loudspeaker 911 is towards ear pad portion 920, first microphone 912 is positioned at loudspeaker 911 one end away from ear pad portion 920, and the sound inlet 9121 of the first microphone 912 deviates from loudspeaker 911, namely the sound inlet 9121 of the first microphone 912 is contrary with sender 9111 direction of loudspeaker 911, thus the voice signal that the first microphone 912 gathers is environmental noise signal.Second microphone 913 is between loudspeaker 911 and ear pad portion 920, and the sound inlet 9131 of second microphone 913 is towards ear pad portion 920, namely the sound inlet 9121 of second microphone 913 is identical with sender 9111 direction of loudspeaker 911, thus the voice signal that second microphone 913 gathers is music signal, speech data signal and environmental noise signal etc.
S1230, obtains at least two-way music signal, speech data signal and at least four road environmental noise signals that seven segmentation earphones gather;
Particularly, this at least two-way music signal come from the left second microphone of seven segmentation earphones and right second microphone respectively, at least two-way speech data signal comes from the left second microphone of seven segmentation earphones and right second microphone respectively, and at least four road environmental noise signals are respectively from a left side first microphone of seven segmentation earphones, left second microphone, right first microphone and right second microphone.
S1240, carries out noise reduction process to music signal and speech data signal;
Particularly, the music signal of left second microphone and right second microphone collection, speech data signal are eliminated.
S1250, carries out noise reduction process to environmental noise signal;
Particularly, because the first microphone and second microphone acquire same environmental noise signal respectively, that is, same environmental noise signal is collected twice, thus first process is weighted to the environmental noise signal of left first microphone and left second microphone collection when processing, two weights by frequency place each in environmental noise signal add up to 1, then produce and the de-noising signal that environmental noise signal amplitude is identical, phase place is contrary after weighting process.To right first microphone and the noise reduction process of right second microphone and the noise reduction process of left first microphone and left second microphone similar, do not repeat them here.
S1260, sends to earphone by this de-noising signal, offsets to carry out interference with environmental noise signal.
The mobile terminal noise-reduction method of the present embodiment, when Test earphone is seven segmentation earphone, first eliminate music signal and speech data signal, again process is weighted to environmental noise signal, and produce the de-noising signal that amplitude is identical, phase place is contrary, the de-noising signal after noise reduction process is sent to earphone, thus produces corresponding noise signal according to the type of earphone, there is good noise reduction, think that user brings ultimate attainment experience.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computing machine, server, air conditioner, or the network equipment etc.) perform method described in each embodiment of the present invention.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a mobile terminal denoising device, is characterized in that, the earphone base of mobile terminal is plugged with earphone, and described device comprises:
Signal acquisition module, for obtaining the noise signal gathered by described earphone;
Noise reduction process module, for carrying out noise reduction process to described noise signal, and produces the de-noising signal identical with described noise signal amplitude, phase place is contrary;
Signal transmitting module, for described de-noising signal is sent to described earphone, offsets to carry out interference with described noise signal.
2. mobile terminal denoising device according to claim 1, is characterized in that, described device also comprises:
Opening module, for opening the decrease of noise functions of described mobile terminal;
Noise reduction instruction sending module, for sending the instruction gathering noise signal to described earphone.
3. mobile terminal denoising device according to claim 2, is characterized in that, described device also comprises:
Detection module is five-part form earphone for detecting described earphone, and described five-part form earphone comprises first kind five-part form earphone and Equations of The Second Kind five-part form earphone;
Correspondingly, described signal acquisition module specifically for:
When determining that described five-part form earphone is described first kind five-part form earphone, then obtain at least two-way music signal, speech data signal and environmental noise signal that described first kind five-part form earphone gathers;
When determining that described five-part form earphone is described Equations of The Second Kind five-part form earphone, then obtain at least two-way environmental noise signal that described Equations of The Second Kind five-part form earphone gathers.
4. mobile terminal denoising device according to claim 2, is characterized in that, described device also comprises:
Detection module is seven segmentation earphones for detecting described earphone;
Correspondingly, described signal acquisition module specifically for: obtain at least two-way music signal, speech data signal and at least thinking environmental noise signal that described seven segmentation earphones gather.
5. according to the arbitrary described mobile terminal denoising device of claim 1-4, it is characterized in that, when described noise signal comprises music signal and environmental noise signal, or when described noise signal comprises speech data signal and environmental noise signal, correspondingly, described noise reduction process module specifically for:
Described music signal in described noise signal or described speech data signal are eliminated;
Produce the de-noising signal identical with described environmental noise signal amplitude, phase place is contrary.
6. a mobile terminal noise-reduction method, is characterized in that, the earphone base of mobile terminal is plugged with earphone, and described method comprises:
Obtain the noise signal gathered by described earphone;
Noise reduction process is carried out to described noise signal, and produces the de-noising signal identical with described noise signal amplitude, phase place is contrary;
Described de-noising signal is sent to described earphone, offsets to carry out interference with described noise signal.
7. mobile terminal noise-reduction method according to claim 6, is characterized in that, come from the noise signal of described earphone collection in described acquisition before, described method also comprises:
Open the decrease of noise functions of described mobile terminal;
The instruction gathering noise signal is sent to described earphone.
8. mobile terminal noise-reduction method according to claim 7, is characterized in that, after the decrease of noise functions of the described mobile terminal of described unlatching, and described to send the instruction gathering noise signal to described earphone before, described method also comprises:
Detecting described earphone is five-part form earphone, and described five-part form earphone comprises first kind five-part form earphone and Equations of The Second Kind five-part form earphone;
Correspondingly, the noise signal that described acquisition is gathered by described earphone comprises:
When determining that described five-part form earphone is described first kind five-part form earphone, then obtain at least two-way music signal, speech data signal and environmental noise signal that described first kind five-part form earphone gathers;
When determining that described five-part form earphone is described Equations of The Second Kind five-part form earphone, then obtain at least two-way environmental noise signal that described Equations of The Second Kind five-part form earphone gathers.
9. mobile terminal noise-reduction method according to claim 7, is characterized in that, after the decrease of noise functions of the described mobile terminal of described unlatching, and described to send the instruction gathering noise signal to described earphone before, described method also comprises:
Detecting described earphone is seven segmentation earphones;
Correspondingly, the noise signal that described acquisition is gathered by described earphone comprises: obtain at least two-way music signal, speech data signal and at least four road environmental noise signals that described seven segmentation earphones gather.
10. according to the arbitrary described mobile terminal noise-reduction method of claim 6-9, it is characterized in that, when described noise signal comprises music signal and environmental noise signal, or when described noise signal comprises speech data signal and environmental noise signal, correspondingly, described noise reduction process is carried out to described noise signal, and produces the de-noising signal identical with described noise signal amplitude, phase place is contrary, comprising:
Described music signal in described noise signal or described speech data signal are eliminated;
Produce the de-noising signal identical with described environmental noise signal amplitude, phase place is contrary.
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| CN106205593A (en) * | 2016-06-28 | 2016-12-07 | 广东欧珀移动通信有限公司 | Sound method of adjustment and relevant device in a kind of car |
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