CN108064002A - Device and method based on impedance adjustment output driving - Google Patents
Device and method based on impedance adjustment output driving Download PDFInfo
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- CN108064002A CN108064002A CN201711333895.0A CN201711333895A CN108064002A CN 108064002 A CN108064002 A CN 108064002A CN 201711333895 A CN201711333895 A CN 201711333895A CN 108064002 A CN108064002 A CN 108064002A
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- acoustic transducer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/007—Protection circuits for transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
Abstract
The present invention provides the device and method based on impedance adjustment output driving, are related to automatic control technology field, including：In the case where accessing electro-acoustic transducer device, control system occurs detector to sampled signal and sends testing and control instruction, sampled signal occurs detector and sends predetermined amplitude and the test detecting voltage signal of frequency according to testing and control instruction, and test detecting voltage signal is applied to electro-acoustic transducer device and sampling resistor, sampling resistor with electro-acoustic transducer device by connecting, test detecting voltage signal is divided, obtain divided voltage signal, control system calculates the impedance value of electro-acoustic transducer device according to divided voltage signal, and power control instruction is sent to power amplification circuit according to impedance value, power amplification circuit exports the power drive signal of predetermined power grade according to power control instruction to electro-acoustic transducer device.The present invention can improve the flexibility of power output grade, improve user experience.
Description
Technical field
The present invention relates to automatic control technology field, more particularly, to the equipment based on impedance adjustment output driving and side
Method.
Background technology
Common electroacoustic transducer driving circuit output power does not have automatic regulation function currently on the market, is designed as volume
Driving force is inadequate when high impedance electro-acoustic transducer device is accessed during fixed small output power, is set to insert during specified big output power
Entering low-impedance earphone can cause distortion even to burn out electro-acoustic transducer device again.After product design shaping, to electro-acoustic transducer device
Range of choice it is smaller and inconvenient, not intelligence, it is necessary to which manual adjustment, this is its shortcoming.
The content of the invention
In view of this, it is an object of the invention to provide the device and method based on impedance adjustment output driving, to improve
The flexibility of power output grade improves user experience.
In a first aspect, an embodiment of the present invention provides a kind of equipment based on impedance adjustment output driving, wherein, including：
Control system, detector and power amplification circuit occur for the sampled signal being connected respectively with the control system, with the sampling
The detector sampling resistor being connected and the electro-acoustic transducer device being connected with the power amplification circuit occur for signal；
In the case where accessing the electro-acoustic transducer device, to the sampled signal detector hair occurs for the control system
Go out testing and control instruction, the sampled signal occurs detector and sends predetermined amplitude and frequency according to testing and control instruction
Detecting voltage signal is tested, and the test detecting voltage signal is applied to the electro-acoustic transducer device and the sampling electricity
Resistance, the sampling resistor divide the test detecting voltage signal, obtain by connecting with the electro-acoustic transducer device
Divided voltage signal, the control system calculate the impedance value of the electro-acoustic transducer device according to the divided voltage signal, and according to
The impedance value sends power control instruction to the power amplification circuit, and the power amplification circuit is according to the Power Control
Instruct the power drive signal to electro-acoustic transducer device output predetermined power grade.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiment of first aspect, wherein, also
Including the interface identification circuit being connected between the control system and the electro-acoustic transducer device；
Interface identification circuit, for identifying whether to access the electro-acoustic transducer device, and to described in the case of access
Control system feedback level variable signal.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiment of first aspect, wherein, also
Sampling including being connected between the control system and the sampling resistor identifies scale unit；
The sampling identification scale unit, for the divided voltage signal to be carried out format conversion generation partial pressure value number letter
Number, and by the partial pressure value digital data transmission to the control system.
With reference to first aspect, an embodiment of the present invention provides the third possible embodiment of first aspect, wherein, institute
Electro-acoustic transducer device is stated, for the power drive signal to be carried out electroacoustic energy conversion, sends sound wave.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiment of first aspect, wherein, also
Including the equipment interface being connected between the electro-acoustic transducer device and the interface identification circuit.
With reference to first aspect, an embodiment of the present invention provides the 5th kind of possible embodiment of first aspect, wherein, institute
Electro-acoustic transducer device is stated as sound reproduction equipment.
Second aspect, the embodiment of the present invention also provide a kind of method based on impedance adjustment output driving, wherein, including：
In the case where accessing electro-acoustic transducer device, control system sends testing and control to sampled signal generation detector and refers to
Order；
The test spy that detector sends predetermined amplitude and frequency according to testing and control instruction occurs for the sampled signal
Voltage signal is surveyed, and the test detecting voltage signal is applied to the electro-acoustic transducer device and sampling resistor；
The sampling resistor divides the test detecting voltage signal by connecting with the electro-acoustic transducer device
Pressure obtains divided voltage signal；
The control system calculates the impedance value of the electro-acoustic transducer device according to the divided voltage signal, and according to described
Impedance value sends power control instruction to power amplification circuit；
The power amplification circuit exports predetermined power etc. according to the power control instruction to the electro-acoustic transducer device
The power drive signal of grade.
With reference to second aspect, an embodiment of the present invention provides the first possible embodiment of second aspect, wherein, institute
The method of stating further includes：
Interface identification circuit identifies whether to access the electro-acoustic transducer device, and is to the control in the case of access
System feedback level variable signal.
With reference to second aspect, an embodiment of the present invention provides the first possible embodiment of second aspect, wherein, institute
The method of stating further includes：
The divided voltage signal is carried out format conversion generation partial pressure value digital signal by sampling identification scale unit, and by institute
Partial pressure value digital data transmission is stated to the control system.
With reference to second aspect, an embodiment of the present invention provides the first possible embodiment of second aspect, wherein, institute
The method of stating further includes：
The power drive signal is carried out electroacoustic energy conversion by the electro-acoustic transducer device, sends sound wave.
The embodiment of the present invention brings following advantageous effect：Equipment provided by the invention based on impedance adjustment output driving
And method, including：In the case where accessing electro-acoustic transducer device, control system occurs detector to sampled signal and sends test control
System instruction, sampled signal occur detector and send predetermined amplitude and the test detecting voltage letter of frequency according to testing and control instruction
Number, and test detecting voltage signal is applied to electro-acoustic transducer device and sampling resistor, sampling resistor by with electroacoustic transducer
Part is connected, and test detecting voltage signal is divided, and obtains divided voltage signal, and control system calculates electricity according to divided voltage signal
The impedance value of sonic transducer part, and power control instruction, power amplification circuit root are sent to power amplification circuit according to impedance value
The power drive signal of predetermined power grade is exported to electro-acoustic transducer device according to power control instruction.The present invention passes through power amplification
Circuit automatically adjusts output power, prevents excessive output power and drive according to the size of the impedance value of electro-acoustic transducer device
The electroacoustic transducer of dynamic small impedance value damages or too small output power drives big impedance electroacoustic transducer to cause to drive
Hypodynamic situation can improve the flexibility of power output grade, improve user experience.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and obtained in attached drawing.
For the above objects, features and advantages of the present invention is enable to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the first equipment schematic diagram based on impedance adjustment output driving that the embodiment of the present invention one provides；
Fig. 2 is second of equipment schematic diagram based on impedance adjustment output driving that the embodiment of the present invention one provides；
Fig. 3 is the third equipment schematic diagram based on impedance adjustment output driving provided by Embodiment 2 of the present invention；
Fig. 4 is the method flow diagram based on impedance adjustment output driving that the embodiment of the present invention three provides.
Icon：
100- control systems；Detector occurs for 200- sampled signals；300- power amplification circuits；410- sampling resistors；
420- electro-acoustic transducer devices；500- interface identification circuits；600- sampling identification scale units.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiment be part of the embodiment of the present invention rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower all other embodiments obtained, belong to the scope of protection of the invention.
Common electroacoustic transducer driving circuit output power does not have automatic regulation function currently on the market, is designed as volume
Driving force is inadequate when high impedance electro-acoustic transducer device is accessed during fixed small output power, is set to insert during specified big output power
Entering low-impedance earphone can cause distortion even to burn out electro-acoustic transducer device again.After product design shaping, to electro-acoustic transducer device
Range of choice it is smaller and inconvenient, not intelligence, it is necessary to which manual adjustment, this is its shortcoming.
Based on this, the device and method provided in an embodiment of the present invention based on impedance adjustment output driving can improve work(
The flexibility of rate output level improves user experience.
For ease of understanding the present embodiment, driven first to being exported disclosed in the embodiment of the present invention based on impedance adjustment
Dynamic equipment describes in detail.
Embodiment one：
Fig. 1 is the first equipment schematic diagram based on impedance adjustment output driving that the embodiment of the present invention one provides.
With reference to Fig. 1, the equipment based on impedance adjustment output driving includes：Control system 100, respectively with control system 100
Detector 200 and power amplification circuit 300 occur for connected sampled signal, are adopted with what sampled signal generation detector 200 was connected
Sample resistance 410 and the electro-acoustic transducer device 420 being connected with power amplification circuit 300.
With reference to Fig. 2, the equipment based on impedance adjustment output driving further includes interface identification circuit 500, sampling identification conversion
Circuit 600 and equipment interface (not shown).Interface identification circuit 500 is connected to control system 100 and electro-acoustic transducer device
Between 420, sampling identification scale unit 600 is connected between control system 100 and sampling resistor 410, is connected on equipment interface
Between electro-acoustic transducer device 420 and interface identification circuit 500.
Based on above equipment, the operation principle of the equipment of impedance adjustment output driving is described.
Electro-acoustic transducer device 420 is connected to using modes such as plug, screw or buckles on equipment interface；Interface identification circuit
500 identify whether to access electro-acoustic transducer device 420, and after the access of electro-acoustic transducer device 420 is recognized, to control system
100 feedback level variable signals.Here level change signal can be by high level signal saltus step for low level signal or
It is high level signal by low level signal saltus step.
According to level change signal, control system 100, which is known, has electro-acoustic transducer device 420 to access, at this point, control system
100 occur detector 200 to sampled signal sends testing and control instruction；Detector 200 occurs for sampled signal according to testing and control
Instruction sends predetermined amplitude and the test detecting voltage signal of frequency, and test detecting voltage signal is applied to electroacoustic transducer
Part 420 and sampling resistor 410.
Sampling resistor 410 divides test detecting voltage signal by connecting with electro-acoustic transducer device 420, according to
Dividing ratios relation obtains divided voltage signal, what the impedance value which is used as electro-acoustic transducer device 420 calculated
Reference data.
Sampling identification scale unit 600 gathers the divided voltage signal on sampling resistor 410, by divided voltage signal into row format
Conversion generation partial pressure value digital signal, and by partial pressure value digital data transmission to control system 100.
Control system 100 carries out divided voltage signal according to sampling identification scale unit 600 transformed partial pressure value number
Signal, calculates the impedance value of electro-acoustic transducer device 420, and sends Power Control to power amplification circuit 300 according to impedance value and refer to
Order.Here, the impedance value of sampling resistor 410, divided voltage signal and above-mentioned test detecting voltage signal are known numeric value, that
The impedance value of electro-acoustic transducer device 420 can be calculated by Ohm's law.
Power amplification circuit 300 exports the work(of predetermined power grade according to power control instruction to electro-acoustic transducer device 420
Rate drive signal.
Power drive signal is carried out electroacoustic energy conversion by electro-acoustic transducer device 420, sends sound wave.Specifically, electroacoustic changes
The electrical signal energy of power drive signal is converted into the acoustical signal energy of corresponding mechanical oscillation by energy device 420, then by machine
Tool vibration generates sound wave.The power drive signal matches with electro-acoustic transducer device 420, prevents excessive output power and drives
The electroacoustic transducer of dynamic small impedance value damages or too small output power drives big impedance electroacoustic transducer to cause to drive
Hypodynamic situation.
Electro-acoustic transducer device 420 is sound reproduction equipment, such as：Earphone, sound equipment, loudspeaker etc..
Embodiment two：
Fig. 3 is the third equipment schematic diagram based on impedance adjustment output driving provided by Embodiment 2 of the present invention.
The present embodiment is described further the equipment based on impedance adjustment output driving using common mobile phone as carrier.
When mobile phone is inserted into various earphones, mobile phone cannot identify that earphone impedance is worth size, and then cannot automatically adjust and be matched with earphone
Sound size.Equipment based on impedance adjustment output driving can be with automatic identification earphone impedance value, and automatically adjusts sound size.
Electro-acoustic transducer device 420 is the earphone of mobile phone, and equipment interface is the earphone jack of mobile phone, and control system 100 is hand
The CPU (Central Processing Unit, central processing unit) of machine.After earphone is inserted into jack, interface identification circuit
500 notify control system 100 by level change signal.Control system 100 occurs detector 200 to sampled signal and sends test
Control instruction；Sampled signal occurs detector 200 and sends predetermined amplitude and the test detection electricity of frequency according to testing and control instruction
Signal is pressed, and test detecting voltage signal is applied on the earphone and sampling resistor 410 of series connection.Sampling identification scale unit
The voltage value of divided voltage signal is identified that laggard feed back to controls system by the divided voltage signal on 600 acquisition sampling resistors 410
System 100.Control system 100 calculates the impedance value of electro-acoustic transducer device 420 by Ohm's law, and according to impedance value to power
Amplifying circuit 300 sends power control instruction, and power amplification circuit 300 is made to export the power drive signal of predetermined power grade.
Earphone sends sound wave under the driving of the power drive signal.
Embodiment three：
Fig. 4 is the method flow diagram based on impedance adjustment output driving that the embodiment of the present invention three provides.
With reference to Fig. 4, the method based on impedance adjustment output driving includes the following steps：
Step S01, interface identification circuit identifies whether to access electro-acoustic transducer device, and is to control in the case of access
System feedback level variable signal；
Step S02, control system occur detector to sampled signal according to level change signal and send testing and control instruction；
The test spy that detector sends predetermined amplitude and frequency according to testing and control instruction occurs for step S03, sampled signal
Voltage signal is surveyed, and test detecting voltage signal is applied to electro-acoustic transducer device and sampling resistor；
Step S04, sampling resistor divide test detecting voltage signal, obtain by connecting with electro-acoustic transducer device
Obtain divided voltage signal；
Divided voltage signal is carried out format conversion generation partial pressure value digital signal by step S05, sampling identification scale unit；
Step S06, control system calculate the impedance value of electro-acoustic transducer device according to partial pressure value digital signal, and according to impedance
It is worth to power amplification circuit and sends power control instruction；
Step S07, power amplification circuit export predetermined power grade according to power control instruction to electro-acoustic transducer device
Power drive signal；
Power drive signal is carried out electroacoustic energy conversion, sends sound wave by step S08, electro-acoustic transducer device.
The technology of the method based on impedance adjustment output driving that the embodiment of the present invention is provided, realization principle and generation
Effect is identical with aforementioned device embodiment, and to briefly describe, the embodiment of the method part based on impedance adjustment output driving does not carry
And part, it can refer to corresponding contents in preceding method embodiment.
The embodiment of the present invention brings following advantageous effect：Equipment provided by the invention based on impedance adjustment output driving
And method, including：In the case where accessing electro-acoustic transducer device, control system occurs detector to sampled signal and sends test control
System instruction, sampled signal occur detector and send predetermined amplitude and the test detecting voltage letter of frequency according to testing and control instruction
Number, and test detecting voltage signal is applied to electro-acoustic transducer device and sampling resistor, sampling resistor by with electroacoustic transducer
Part is connected, and test detecting voltage signal is divided, and obtains divided voltage signal, and control system calculates electricity according to divided voltage signal
The impedance value of sonic transducer part, and power control instruction, power amplification circuit root are sent to power amplification circuit according to impedance value
The power drive signal of predetermined power grade is exported to electro-acoustic transducer device according to power control instruction.The present invention passes through power amplification
Circuit automatically adjusts output power, prevents excessive output power and drive according to the size of the impedance value of electro-acoustic transducer device
The electroacoustic transducer of dynamic small impedance value damages or too small output power drives big impedance electroacoustic transducer to cause to drive
Hypodynamic situation can improve the flexibility of power output grade, improve user experience.
The embodiment of the present invention also provides a kind of electronic equipment, and including memory, processor, being stored in memory can locate
The computer program that runs on reason device, processor realize that above-described embodiment provides when performing computer program based on impedance adjustment
The step of method of output driving.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program performs the method based on impedance adjustment output driving of above-described embodiment when computer program is run by processor
Step.
In addition, in the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
The computer program product for carrying out the method based on impedance adjustment output driving that the embodiment of the present invention is provided, bag
The computer readable storage medium for storing the non-volatile program code that processor can perform is included, what said program code included
Instruction can be used for performing the method described in previous methods embodiment, and specific implementation can be found in embodiment of the method, no longer superfluous herein
It states.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit may be referred to the corresponding process in preceding method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.The apparatus embodiments described above are merely exemplary, for example, the division of the unit,
Only a kind of division of logic function, can there is other dividing mode in actual implementation, in another example, multiple units or component can
To combine or be desirably integrated into another system or some features can be ignored or does not perform.It is another, it is shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be by some communication interfaces, device or unit it is indirect
Coupling or communication connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That unit is individually physically present, can also two or more units integrate in a unit.
If the function is realized in the form of SFU software functional unit and is independent production marketing or in use, can be with
It is stored in the non-volatile computer read/write memory medium that a processor can perform.Based on such understanding, the present invention
The part that substantially contributes in other words to the prior art of technical solution or the part of the technical solution can be with software
The form of product embodies, which is stored in a storage medium, including some instructions use so that
One computer equipment (can be personal computer, server or the network equipment etc.) performs each embodiment institute of the present invention
State all or part of step of method.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with
Store the medium of program code.
Finally it should be noted that：Embodiment described above is only the specific embodiment of the present invention, to illustrate the present invention
Technical solution, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent substitution is carried out to which part technical characteristic；And these modifications, variation or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention described should be subject to the protection scope in claims.
Claims (10)
1. a kind of equipment based on impedance adjustment output driving, which is characterized in that including：Control system, respectively with the control
Detector and power amplification circuit occur for the sampled signal that system is connected, the sampling being connected with sampled signal generation detector
Resistance and the electro-acoustic transducer device being connected with the power amplification circuit；
In the case where accessing the electro-acoustic transducer device, the control system occurs detector to the sampled signal and sends survey
Control instruction is tried, the test that detector sends predetermined amplitude and frequency according to testing and control instruction occurs for the sampled signal
Detecting voltage signal, and the test detecting voltage signal is applied to the electro-acoustic transducer device and the sampling resistor, institute
Sampling resistor is stated by connecting with the electro-acoustic transducer device, the test detecting voltage signal is divided, obtains a point electricity
Signal is pressed, the control system calculates the impedance value of the electro-acoustic transducer device according to the divided voltage signal, and according to described
Impedance value sends power control instruction to the power amplification circuit, and the power amplification circuit is according to the power control instruction
To the power drive signal of electro-acoustic transducer device output predetermined power grade.
2. the equipment according to claim 1 based on impedance adjustment output driving, which is characterized in that further include and be connected to institute
State the interface identification circuit between control system and the electro-acoustic transducer device；
Interface identification circuit, for identifying whether to access the electro-acoustic transducer device, and to the control in the case of access
System feedback level change signal.
3. the equipment according to claim 1 based on impedance adjustment output driving, which is characterized in that further include and be connected to institute
State the sampling identification scale unit between control system and the sampling resistor；
The sampling identification scale unit, for the divided voltage signal to be carried out format conversion generation partial pressure value digital signal,
And by the partial pressure value digital data transmission to the control system.
4. the equipment according to claim 1 based on impedance adjustment output driving, which is characterized in that the electroacoustic transducer
Part for the power drive signal to be carried out electroacoustic energy conversion, sends sound wave.
5. the equipment according to claim 1 based on impedance adjustment output driving, which is characterized in that further include and be connected to institute
State the equipment interface between electro-acoustic transducer device and the interface identification circuit.
6. the equipment according to claim 1 based on impedance adjustment output driving, which is characterized in that the electroacoustic transducer
Part is sound reproduction equipment.
A kind of 7. method based on impedance adjustment output driving, which is characterized in that including：
In the case where accessing electro-acoustic transducer device, control system occurs detector to sampled signal and sends testing and control instruction；
The sampled signal occurs detector and sends predetermined amplitude and the test detection electricity of frequency according to testing and control instruction
Signal is pressed, and the test detecting voltage signal is applied to the electro-acoustic transducer device and sampling resistor；
The sampling resistor divides the test detecting voltage signal, obtains by connecting with the electro-acoustic transducer device
Obtain divided voltage signal；
The control system calculates the impedance value of the electro-acoustic transducer device according to the divided voltage signal, and according to the impedance
It is worth to power amplification circuit and sends power control instruction；
The power amplification circuit exports predetermined power grade according to the power control instruction to the electro-acoustic transducer device
Power drive signal.
8. the method according to claim 7 based on impedance adjustment output driving, which is characterized in that the method is also wrapped
It includes：
Interface identification circuit identifies whether to access the electro-acoustic transducer device, and anti-to the control system in the case of access
Feed flat variable signal.
9. the method according to claim 7 based on impedance adjustment output driving, which is characterized in that the method is also wrapped
It includes：
The divided voltage signal is carried out format conversion generation partial pressure value digital signal by sampling identification scale unit, and will be described point
Pressure value digital data transmission is to the control system.
10. the method according to claim 8 based on impedance adjustment output driving, which is characterized in that the method is also wrapped
It includes：
The power drive signal is carried out electroacoustic energy conversion by the electro-acoustic transducer device, sends sound wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711333895.0A CN108064002A (en) | 2017-12-11 | 2017-12-11 | Device and method based on impedance adjustment output driving |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711333895.0A CN108064002A (en) | 2017-12-11 | 2017-12-11 | Device and method based on impedance adjustment output driving |
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| CN108064002A true CN108064002A (en) | 2018-05-22 |
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| CN201711333895.0A Pending CN108064002A (en) | 2017-12-11 | 2017-12-11 | Device and method based on impedance adjustment output driving |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960175A (en) * | 2005-11-03 | 2007-05-09 | 三星电子株式会社 | Method and apparatus to control output power of a power amplifier and audio player having the same |
| US20080030277A1 (en) * | 2006-07-10 | 2008-02-07 | Boughton Donald H Jr | Power amplifier with output voltage compensation |
| US20120163619A1 (en) * | 2010-12-22 | 2012-06-28 | Panasonic Corporation | Wireless power transmission audio system and device on transmitting end and loudspeaker for use in such a system |
| CN102857228A (en) * | 2011-06-30 | 2013-01-02 | 富泰华工业（深圳）有限公司 | Electronic equipment and audio output control method thereof |
| CN103546852A (en) * | 2012-07-09 | 2014-01-29 | 马克西姆综合产品公司 | System and method for optimized playback of audio signals through headphones |
| CN103986999A (en) * | 2014-04-14 | 2014-08-13 | 小米科技有限责任公司 | Method, device and terminal equipment for detecting earphone impedance |
-
2017
- 2017-12-11 CN CN201711333895.0A patent/CN108064002A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960175A (en) * | 2005-11-03 | 2007-05-09 | 三星电子株式会社 | Method and apparatus to control output power of a power amplifier and audio player having the same |
| US20080030277A1 (en) * | 2006-07-10 | 2008-02-07 | Boughton Donald H Jr | Power amplifier with output voltage compensation |
| US20120163619A1 (en) * | 2010-12-22 | 2012-06-28 | Panasonic Corporation | Wireless power transmission audio system and device on transmitting end and loudspeaker for use in such a system |
| CN102857228A (en) * | 2011-06-30 | 2013-01-02 | 富泰华工业（深圳）有限公司 | Electronic equipment and audio output control method thereof |
| CN103546852A (en) * | 2012-07-09 | 2014-01-29 | 马克西姆综合产品公司 | System and method for optimized playback of audio signals through headphones |
| CN103986999A (en) * | 2014-04-14 | 2014-08-13 | 小米科技有限责任公司 | Method, device and terminal equipment for detecting earphone impedance |
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