CN103986999B - A kind of method, apparatus and terminal device of test earphone impedance - Google Patents
A kind of method, apparatus and terminal device of test earphone impedance Download PDFInfo
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Abstract
The disclosure is directed to the method, apparatus and terminal device of a kind of test earphone impedance, including：After having detected earphone insertion terminal device, exchange single-frequency electric signal is issued, the intersection for the audio frequency range that the frequency range and human ear of the exchange single-frequency electric signal can be heard is empty set；Earphone impedance is calculated according to voltage divider principle.The pop noise that the program is generated when issuing and exchanging single-frequency electric signal will not be heard by the user, and the pop noise that the user generated in the related technology can hear be avoided, so that the user experience is improved.
Description
Technical field
The present invention relates to ear phone technology field more particularly to a kind of method, apparatus and terminal device of test earphone impedance.
Background technique
Earphone is usually used cooperatively with mobile phone, tablet computer, computer etc. terminal device, general with terminal device
And the application of earphone is also more and more extensive.Under normal circumstances, for earphone impedance between 8-600 ohm, earphone impedance is higher, needs
The earphone gain wanted is bigger；Conversely, earphone impedance is lower, the earphone gain needed is smaller.Therefore, accurate test earphone impedance is
The premise of accurate adjustment earphone gain.
Currently, the method for test earphone impedance is as follows：After terminal device has detected earphone insertion, DC high-voltage is issued
Then signal utilizes the impedance of voltage divider principle test earphone.This method can generate explosion (pop) when issuing high direct voltage electric signal
Noise, and then influence user experience.
Summary of the invention
To overcome the problems in correlation technique, the disclosure provides method, apparatus and the end of a kind of test earphone impedance
End equipment.
According to the first aspect of the embodiments of the present disclosure, a kind of method of test earphone impedance is provided, including：
After having detected earphone insertion terminal device, exchange single-frequency electric signal, the frequency of the exchange single-frequency electric signal are issued
The intersection for the audio frequency range that rate range and human ear can be heard is empty set；
Earphone impedance is calculated according to voltage divider principle.
With reference to first aspect, in the first possible implementation of the first aspect, the sending exchanges single-frequency telecommunications
Number the step of include：
It searches and plays the audio file including the exchange single-frequency electric signal.
With reference to first aspect, in the second possible implementation of the first aspect, described to be calculated according to voltage divider principle
The step of earphone impedance includes：
Obtain the voltage value at the earphone both ends and the current value by the earphone；
The ratio for calculating the voltage value and the current value by the earphone at the earphone both ends, using the ratio as institute
State earphone impedance.
With reference to first aspect, second of the possible implementation of the first of first aspect or first aspect it is possible
Implementation, in a third possible implementation of the first aspect, the method further includes：
Obtain the corresponding earphone gain of the earphone impedance；
The output power of the terminal device is adjusted according to the earphone gain.
The third possible implementation with reference to first aspect, in the 4th kind of possible implementation of first aspect
In, described the step of obtaining the earphone impedance corresponding earphone gain includes：
Obtain the mapping table of preset earphone impedance range and earphone gain；
It determines the earphone impedance range where the earphone impedance, the earphone impedance is obtained from the mapping table
The corresponding earphone gain of range.
According to the second aspect of an embodiment of the present disclosure, a kind of device of test earphone impedance is provided, including：
Detection module, for detecting whether there is earphone to be inserted into terminal device；
Module is issued, for it is single to issue exchange after the detection module has detected that earphone is inserted into the terminal device
The intersection of frequency electric signal, the audio frequency range that the frequency range and human ear of the exchange single-frequency electric signal can be heard is empty set；
Computing module, for calculating earphone impedance according to voltage divider principle.
In conjunction with second aspect, in the first possible implementation of the second aspect, the sending module includes：
Searching unit includes the audio file for exchanging single-frequency electric signal for searching；
Broadcast unit, for playing the audio file.
In conjunction with second aspect, in a second possible implementation of the second aspect, the computing module includes：
First acquisition unit, for obtaining the voltage value at the earphone both ends and by the current value of the earphone；
Computing unit, the ratio of voltage value and the current value by the earphone for calculating the earphone both ends, will
The ratio is as the earphone impedance.
It is possible in conjunction with the first possible implementation of second aspect, second aspect or second of second aspect
Implementation, in the third possible implementation of the second aspect, the device further includes：
Module is obtained, for obtaining the corresponding earphone gain of the earphone impedance；
Module is adjusted, for adjusting the output power of the terminal device according to the earphone gain.
In conjunction with the third possible implementation of second aspect, in the 4th kind of possible implementation of second aspect
In, the acquisition module includes：
Second acquisition unit, for obtaining the mapping table of preset earphone impedance range and earphone gain；
Determination unit, for determining the earphone impedance range where the earphone impedance；
Third acquiring unit increases for obtaining the corresponding earphone of the earphone impedance range from the mapping table
Benefit.
According to the third aspect of an embodiment of the present disclosure, a kind of terminal device is provided, including：
Processor；
Memory for storage processor executable instruction；
Wherein, the processor is configured to：
After detecting earphone insertion terminal device, exchange single-frequency electric signal, the frequency of the exchange single-frequency electric signal are issued
The intersection for the audio frequency range that range and human ear can be heard is empty set；
Earphone impedance is calculated according to voltage divider principle.
The technical scheme provided by this disclosed embodiment can include the following benefits：Detecting earphone insertion eventually
After end equipment, exchange single-frequency electric signal is issued, earphone impedance is calculated according to voltage divider principle, due to exchanging the frequency of single-frequency electric signal
The intersection for the audio frequency range that range and human ear can be heard is empty set, and the pop generated when issuing and exchanging single-frequency electric signal makes an uproar
Sound will not be heard by the user, and the pop noise that the user generated in the related technology can hear be avoided, to improve user's body
It tests.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is a kind of flow chart of the method for test earphone impedance shown according to an exemplary embodiment.
Fig. 2 is the flow chart of the method for another test earphone impedance shown according to an exemplary embodiment.
Fig. 3 is a kind of schematic diagram of the device of test earphone impedance shown according to an exemplary embodiment.
Fig. 4 is the schematic diagram of the device of another test earphone impedance shown according to an exemplary embodiment.
Fig. 5 is a kind of block diagram of terminal device shown according to an exemplary embodiment.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Fig. 1 is a kind of flow chart of the method for test earphone impedance shown according to an exemplary embodiment, such as Fig. 1 institute
Show, the method for test earphone impedance is for including the following steps in terminal device.
In step s 11, after having detected earphone insertion terminal device, exchange single-frequency electric signal is issued.
Terminal device can be generally used cooperatively with earphone, after having detected that earphone is inserted into terminal device, can be issued
Single-frequency electric signal is exchanged, the intersection for the audio frequency range that the frequency range and human ear for exchanging single-frequency electric signal can be heard is sky
Collection ensures that in this way when issuing exchange single-frequency electric signal, will not issue the pop noise that human ear can be heard.
In step s 12, earphone impedance is calculated according to voltage divider principle.
The embodiment of the present disclosure issues exchange single-frequency electric signal, according to partial pressure after having detected earphone insertion terminal device
Principle calculates earphone impedance, due to the intersection for the audio frequency range that the frequency range and human ear of exchange single-frequency electric signal can be heard
For empty set, the pop noise generated when issuing and exchanging single-frequency electric signal will not be heard by the user, avoid and generate in the related technology
The pop noise that can hear of user, so that the user experience is improved.
Further, sending in above-mentioned S11 exchanges the step of single-frequency electric signal and includes：
It searches and plays the audio file including exchanging single-frequency electric signal.
Can store in terminal device in advance includes the audio file for exchanging single-frequency electric signal, is detecting that earphone is slotting
After entering terminal device, searches and play the audio file.
Further, include the step of calculating earphone impedance according to voltage divider principle in above-mentioned steps S12：
Obtain the voltage value at earphone both ends and the current value by earphone；
The ratio for calculating the voltage value and the current value by earphone at earphone both ends, using ratio as earphone impedance.
Assuming that the voltage value at the earphone both ends got is U, is I by the current value of earphone, then earphone impedance R=U/I.
For example, the U=20 volt got, I=0.5 peace, then earphone impedance R=U/I=20/0.5=40 ohm.
Further, as shown in Fig. 2, the method for above-mentioned test earphone impedance further includes：
In step s 13, the corresponding earphone gain of earphone impedance is obtained.
In step S14, according to the output power of earphone gain adjustment terminal device.
Currently, earphone gain is usually arranged as two grades：The mode of high-gain and low gain, this set earphone gain is inadequate
Finely, when high-gain is greater than required earphone gain, earphone is easy to cause to damage；When low gain is less than required earphone gain
When, earphone broadcast sound volume is too small, influences user experience.
Suitable earphone gain can be obtained according to earphone impedance in the embodiments of the present disclosure, is then increased according still further to earphone
The output power of benefit adjustment terminal device improves user experience so that the volume for guaranteeing that earphone plays is moderate.
Further, in step s 13 the step of acquisition earphone impedance corresponding earphone gain includes：
Obtain the mapping table of preset earphone impedance range and earphone gain；
It determines the earphone impedance range where earphone impedance, the corresponding ear of earphone impedance range is obtained from mapping table
Machine gain.
Currently, earphone impedance between 8-600 ohm, can be divided into several earphone impedance ranges, it is then every
A earphone impedance range configures suitable earphone gain.For example, being divided into 9 earphone impedance ranges：8 ohm or less, 8-
16 ohm, 16-32 ohm, 32-50 ohm, 50-63 ohm, 63-100 ohm, 100-300 ohm, 300-600 ohm, 600 Europe
More than nurse, suitable earphone gain then is configured for each earphone impedance range, by each earphone impedance range and corresponding ear
Machine gain is stored in the mapping table of earphone impedance range and earphone gain, after detecting earphone impedance, it is first determined
Earphone impedance range where the earphone impedance, then searches corresponding earphone gain in the mapping table.
For example, if detecting, earphone impedance is 60 ohm, can determine that the earphone impedance is in 50-63 ohm of this earphones
In impedance ranges, which is required earphone gain.
Certainly, earphone impedance range can be configured according to actual needs, such as can be set to 3,4,5,7
A, 10 etc. earphone impedance ranges.
Fig. 3 is a kind of schematic device of test earphone impedance shown according to an exemplary embodiment.It, should referring to Fig. 3
Device includes detection module 31, issues module 32 and computing module 33.
The detection module 31 is configured as having detected whether that earphone is inserted into terminal device.
The sending module 32 is configured as after detection module has detected earphone insertion terminal device, issues exchange single-frequency
Electric signal, the intersection for the audio frequency range that the frequency range and human ear for exchanging single-frequency electric signal can be heard are empty set.
The computing module 33 is configured as calculating earphone impedance according to voltage divider principle.
Further, which includes searching unit and broadcast unit：
It includes the audio file for exchanging single-frequency electric signal that the searching unit, which is configured as searching,.
The broadcast unit is configurable for playing audio file.
Further, computing module 33 includes first acquisition unit and computing unit：
The first acquisition unit is configurable for the voltage value for obtaining earphone both ends and the current value by earphone.
The computing unit is configured as calculating the ratio of the voltage value and the current value by earphone at earphone both ends, by ratio
As earphone impedance.
Further, as shown in figure 4, the device of above-mentioned test earphone impedance further includes obtaining module 34 and adjustment module 35：
The acquisition module 34 is configured as obtaining the corresponding earphone gain of earphone impedance.
The adjustment module 35 is configured as adjusting the output power of terminal device according to earphone gain.
Further, obtaining module 34 includes second acquisition unit, determination unit and third acquiring unit：
The second acquisition unit is configured as obtaining the mapping table of preset earphone impedance range and earphone gain.
The determination unit is configured to determine that the earphone impedance range where earphone impedance；
The third acquiring unit is configured as obtaining the corresponding earphone gain of earphone impedance range from mapping table.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, no detailed explanation will be given here.
Fig. 5 is a kind of block diagram of terminal device 800 for test earphone impedance shown according to an exemplary embodiment.
For example, terminal device 800 can be mobile phone, computer, digital broadcasting terminal, messaging device, game console put down
Panel device, Medical Devices, body-building equipment, personal digital assistant etc..
Referring to Fig. 5, terminal device 800 may include following one or more components：Processing component 802, memory 804,
Power supply module 806, multimedia component 808, audio component 810, the interface 812 of input/output (I/O), sensor module 814,
And communication component 816.
The integrated operation of the usual controlling terminal equipment 800 of processing component 802, such as with display, call, data are logical
Letter, camera operation and record operate associated operation.Processing component 802 may include one or more processors 820 to hold
Row instruction, to perform all or part of the steps of the methods described above.In addition, processing component 802 may include one or more moulds
Block, convenient for the interaction between processing component 802 and other assemblies.For example, processing component 802 may include multi-media module, with
Facilitate the interaction between multimedia component 808 and processing component 802.
Memory 804 is configured as storing various types of data to support the operation in terminal device 800.These data
Example include any application or method for being operated on terminal device 800 instruction, contact data, telephone directory
Data, message, picture, video etc..Memory 804 can by any kind of volatibility or non-volatile memory device or it
Combination realize, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM) is erasable
Except programmable read only memory (EPROM), programmable read only memory (PROM), read-only memory (ROM), magnetic memory, fastly
Flash memory, disk or CD.
Power supply module 806 provides electric power for the various assemblies of terminal device 800.Power supply module 806 may include power supply pipe
Reason system, one or more power supplys and other with for terminal device 800 generate, manage, and distribute the associated component of electric power.
Multimedia component 808 includes the screen of one output interface of offer between the terminal device 800 and user.
In some embodiments, screen may include liquid crystal display (LCD) and touch panel (TP).If screen includes touch surface
Plate, screen may be implemented as touch screen, to receive input signal from the user.Touch panel includes one or more touches
Sensor is to sense the gesture on touch, slide, and touch panel.The touch sensor can not only sense touch or sliding
The boundary of movement, but also detect duration and pressure associated with the touch or slide operation.In some embodiments,
Multimedia component 808 includes a front camera and/or rear camera.When terminal device 800 is in operation mode, as clapped
When taking the photograph mode or video mode, front camera and/or rear camera can receive external multi-medium data.It is each preposition
Camera and rear camera can be a fixed optical lens system or have focusing and optical zoom capabilities.
Audio component 810 is configured as output and/or input audio signal.For example, audio component 810 includes a Mike
Wind (MIC), when terminal device 800 is in operation mode, when such as call mode, recording mode, and voice recognition mode, microphone
It is configured as receiving external audio signal.The received audio signal can be further stored in memory 804 or via logical
Believe that component 816 is sent.In some embodiments, audio component 810 further includes a loudspeaker, is used for output audio signal.
I/O interface 812 provides interface between processing component 802 and peripheral interface module, and above-mentioned peripheral interface module can
To be keyboard, click wheel, button etc..These buttons may include, but are not limited to：Home button, volume button, start button and lock
Determine button.
Sensor module 814 includes one or more sensors, for providing the state of various aspects for terminal device 800
Assessment.For example, sensor module 814 can detecte the state that opens/closes of terminal device 800, the relative positioning of component, example
As the component be terminal device 800 display and keypad, sensor module 814 can also detect terminal device 800 or
The position change of 800 1 components of terminal device, the existence or non-existence that user contacts with terminal device 800, terminal device 800
The temperature change of orientation or acceleration/deceleration and terminal device 800.Sensor module 814 may include proximity sensor, be configured
For detecting the presence of nearby objects without any physical contact.Sensor module 814 can also include optical sensor,
Such as CMOS or ccd image sensor, for being used in imaging applications.In some embodiments, which may be used also
To include acceleration transducer, gyro sensor, Magnetic Sensor, pressure sensor or temperature sensor.
Communication component 816 is configured to facilitate the communication of wired or wireless way between terminal device 800 and other equipment.
Terminal device 800 can access the wireless network based on communication standard, such as WiFi, 2G or 3G or their combination.Show at one
In example property embodiment, communication component 816 receives broadcast singal or broadcast from external broadcasting management system via broadcast channel
Relevant information.In one exemplary embodiment, the communication component 816 further includes near-field communication (NFC) module, short to promote
Cheng Tongxin.For example, radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra wide band can be based in NFC module
(UWB) technology, bluetooth (BT) technology and other technologies are realized.
In the exemplary embodiment, terminal device 800 can be by one or more application specific integrated circuit (ASIC), number
Word signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array
(FPGA), controller, microcontroller, microprocessor or other electronic components are realized, for executing the above method.
In the exemplary embodiment, a kind of non-transitorycomputer readable storage medium including instruction, example are additionally provided
It such as include the memory 804 of instruction, above-metioned instruction can be executed by the processor 820 of terminal device 800 to complete the above method.Example
Such as, the non-transitorycomputer readable storage medium can be ROM, random access memory (RAM), CD-ROM, tape, soft
Disk and optical data storage devices etc..
A kind of non-transitorycomputer readable storage medium, when the instruction in the storage medium is by the processing of terminal device
When device executes, so that a kind of method that terminal device is able to carry out test earphone impedance, the method includes：
After having detected earphone insertion terminal device, exchange single-frequency electric signal, the frequency of the exchange single-frequency electric signal are issued
The intersection for the audio frequency range that rate range and human ear can be heard is empty set；
Earphone impedance is calculated according to voltage divider principle.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (9)
1. a kind of method of test earphone impedance, which is characterized in that including：
After having detected earphone insertion terminal device, exchange single-frequency electric signal, the frequency model of the exchange single-frequency electric signal are issued
The intersection for enclosing the audio frequency range that can be heard with human ear is empty set；
Earphone impedance is calculated according to voltage divider principle；
Obtain the corresponding earphone gain of the earphone impedance；
The output power of the terminal device is adjusted according to the earphone gain.
2. the method according to claim 1, wherein the step of sending exchange single-frequency electric signal, includes：
It searches and plays the audio file including the exchange single-frequency electric signal.
3. the method according to claim 1, wherein described the step of calculating earphone impedance according to voltage divider principle, wraps
It includes：
Obtain the voltage value at the earphone both ends and the current value by the earphone；
The ratio for calculating the voltage value and the current value by the earphone at the earphone both ends, using the ratio as the ear
Machine impedance.
4. the method according to claim 1, wherein described obtain the earphone impedance corresponding earphone gain
Step includes：
Obtain the mapping table of preset earphone impedance range and earphone gain；
It determines the earphone impedance range where the earphone impedance, the earphone impedance range is obtained from the mapping table
Corresponding earphone gain.
5. a kind of device of test earphone impedance, which is characterized in that including：
Detection module, for detecting whether there is earphone to be inserted into terminal device；
Module is issued, for after the detection module has detected that earphone is inserted into the terminal device, issuing exchange single-frequency electricity
The intersection of signal, the audio frequency range that the frequency range and human ear of the exchange single-frequency electric signal can be heard is empty set；
Computing module, for calculating earphone impedance according to voltage divider principle；
Module is obtained, for obtaining the corresponding earphone gain of the earphone impedance；
Module is adjusted, for adjusting the output power of the terminal device according to the earphone gain.
6. device according to claim 5, which is characterized in that the sending module includes：
Searching unit includes the audio file for exchanging single-frequency electric signal for searching；
Broadcast unit, for playing the audio file.
7. device according to claim 5, which is characterized in that the computing module includes：
First acquisition unit, for obtaining the voltage value at the earphone both ends and by the current value of the earphone；
Computing unit, the ratio of voltage value and the current value by the earphone for calculating the earphone both ends, will be described
Ratio is as the earphone impedance.
8. device according to claim 5, which is characterized in that the acquisition module includes：
Second acquisition unit, for obtaining the mapping table of preset earphone impedance range and earphone gain；
Determination unit, for determining the earphone impedance range where the earphone impedance；
Third acquiring unit, for obtaining the corresponding earphone gain of the earphone impedance range from the mapping table.
9. a kind of terminal device, which is characterized in that including：
Processor；
Memory for storage processor executable instruction；
Wherein, the processor is configured to：
After detecting earphone insertion terminal device, exchange single-frequency electric signal, the frequency range of the exchange single-frequency electric signal are issued
The intersection for the audio frequency range that can be heard with human ear is empty set；
Earphone impedance is calculated according to voltage divider principle；
Obtain the corresponding earphone gain of the earphone impedance；
The output power of the terminal device is adjusted according to the earphone gain.
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| CN104461568A (en) * | 2014-12-25 | 2015-03-25 | 小米科技有限责任公司 | Electronic accessory recognition device and method |
| CN106162484A (en) * | 2015-04-16 | 2016-11-23 | 展讯通信（上海）有限公司 | A kind of earphone impedance detecting system, method and portable electric appts |
| CN104936099A (en) * | 2015-06-30 | 2015-09-23 | 小米科技有限责任公司 | Method and device for recognizing loudspeaker |
| CN105530567A (en) * | 2015-12-23 | 2016-04-27 | 联想(北京)有限公司 | Output control method, control apparatus and electronic device |
| CN105700613B (en) * | 2016-02-14 | 2017-12-12 | 惠州Tcl移动通信有限公司 | The output power adjusting device and its method of a kind of mobile terminal |
| CN106093574B (en) * | 2016-05-30 | 2018-07-03 | 歌尔股份有限公司 | A kind of impedance detection device of headset plug |
| CN106383288A (en) * | 2016-08-25 | 2017-02-08 | 歌尔股份有限公司 | Test equipment for USB interface earphone |
| CN109286869A (en) * | 2017-07-19 | 2019-01-29 | 天津三星通信技术研究有限公司 | Audio method of adjustment and equipment suitable for earphone |
| CN108064002A (en) * | 2017-12-11 | 2018-05-22 | 广州捷宝电子科技股份有限公司 | Device and method based on impedance adjustment output driving |
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