CN101964932A - Sound source equipment and control method - Google Patents
Sound source equipment and control method Download PDFInfo
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- CN101964932A CN101964932A CN2010105164067A CN201010516406A CN101964932A CN 101964932 A CN101964932 A CN 101964932A CN 2010105164067 A CN2010105164067 A CN 2010105164067A CN 201010516406 A CN201010516406 A CN 201010516406A CN 101964932 A CN101964932 A CN 101964932A
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Abstract
The invention discloses sound source equipment. The sound source equipment comprises an earphone tolerance degree acquisition module; and when the sound source equipment is connected with an earphone, the sound source equipment acquires earphone tolerance degree and controls the output of the volume of the earphone according to the acquired earphone tolerance degree. An earphone output control method for the sound source equipment comprises the following steps of: acquiring the earphone tolerance degree; and controlling the output of the volume of the earphone according to the acquired earphone tolerance degree. By the method, the sound source equipment and the earphone can be unified in both interface and function; and the same sound source equipment can adapt to the earphones of different performance to support each other in function, reasonably extend, support more choices and keep the best output. The earphone and the sound source equipment can adapt to each other in the volume output without burning down the earphone due to the high output power.
Description
Technical field
The present invention relates to a kind of audiogenic device and control method.
Background technology
Now, along with the development of technology, increasing audiogenic device such as MP3, DVD player, television set, broadcast receiver, phone, mobile phone etc. appear in people's the life, have increased enjoyment for people's life.In these equipment of use, two kinds of method output audios are generally arranged, a kind of is loud speaker, a kind of is earphone.When using earphone as audio output device, earphone generally is divided into wired earphone and wireless headset; In addition, divide according to sound channel, earphone is divided into not only mono headset, dual-channel headphone (claim not only stereophone) and multi-sound-channel earphone (but also being called the surround sound earphone).The earphone of Chu Shouing from the market, the earphone of different manufacturer production all has nothing in common with each other, and interface standard neither be unified especially; Especially high-end earphone product, the versatility of product is poor.In addition, versatility is also poor between the earphone between the distinct device, and the earphone that uses on the mobile phone just can not well use on other audiogenic device.In addition, the handset earphone of different brands can not fine compatibility, and the handset earphone of same brand different model can not fine compatibility.Like this, caused the significant wastage of earphone resource.
In the evolution of versatility earphone, the interface unification is from physically allowing earphone realize unification, but the unification of having only interface can not allow the complete function of earphone bring into play, and the control of earphone also must be accomplished the function of the unified earphone of performance comprehensively, and the continual renovation of promotion earphone technology.
Chinese patent application CN201010298420.4, " a kind of earphone, corresponding audiogenic device and control method " discloses a kind of earphone, and described earphone comprises the ear-phone function properties store, is used to store the functional parameter of earphone.Correspondingly, a kind of audiogenic device is disclosed, described audiogenic device comprises ear-phone function parameter read module, when described audiogenic device with after earphone is connected, described ear-phone function parameter read module reads the ear-phone function parameter, and described audiogenic device is adjusted the working method of self to adapt to the work of described earphone according to the described functional parameter that reads.Simultaneously, a kind of control method that is used between described earphone and the audiogenic device is also disclosed.
The impedance of earphone, i.e. resistance and reactance on vector and.Have at desktop computer or power amplifier, VCD, DVD TV etc. on the machine of earphone jack output, the earphone of high impedance is more suitable in general the use.If use the low-resistance earphone, necessarily to turn down volume more earlier and plug in the earphone, little by little volume is transferred up again, prevention earphone overload burns out earphone or voice coil loudspeaker voice coil distortion dislocation causes distorsion, low-impedance earphone generally promotes than being easier to, therefore machine portable, power saving such as walkman should be selected the Low ESR earphone, is also noted that simultaneously sensitivity wants high, and sensitivity index is more important concerning walkman.The impedance of earphone is stored in the ear-phone function properties store as one of important performance characteristic of earphone, and audiogenic device can be controlled earphone after reading this parameter better.
Fig. 1 be existing earphone and connection layout, three lines are generally arranged, i.e. L channel, R channel and ground wire between the two.But just simply be connected between audiogenic device and the earphone, audiogenic device can not be according to the characteristic changing output signal of earphone.
Summary of the invention
The purpose of this invention is to provide a kind of audiogenic device and control method, make between earphone and the audiogenic device in volume output, can adapt, be unlikely to burn out earphone greatly because of power output.
The present invention is achieved in that a kind of audiogenic device, described audiogenic device comprises earphone tolerance degree acquisition module, when described audiogenic device with after earphone is connected, described audiogenic device obtains the earphone tolerance degree, and obtains the output that the earphone tolerance degree is controlled its volume according to described.
Further, described earphone tolerance degree is measured by the impedance of earphone.
Further, described audiogenic device comprises that also the highest output volume of audiogenic device is provided with module, and described module is provided with the highest output volume according to the described earphone tolerance degree that obtains.
Further, described audiogenic device comprises that also the highest output volume of audiogenic device is provided with module, the volume when described module is provided with the earphone startup according to the described earphone tolerance degree that obtains.
The present invention also provides a kind of audiogenic device earphone output control method, and described method comprises, obtains the earphone tolerance degree; Obtain the output that the earphone tolerance degree is controlled its volume according to described.
Further, described earphone tolerance degree is measured by the impedance of earphone.
Further, described method also comprises, according to the described earphone tolerance degree that obtains the highest output volume is set.
Further, described method also comprises, according to described volume when obtaining the earphone tolerance degree and earphone being set starting.
Further, described method comprises that also audiogenic device obtains the earphone impedance parameter, judges that this earphone belongs to high impedance, middle impedance, still is Low ESR, and according to the type of impedance, system is provided with output descant value.
Further, described method comprises that also audiogenic device obtains the earphone impedance parameter, judge that this earphone belongs to high impedance, middle impedance, still is Low ESR, according to the type of impedance, when system detected earphone insertion or audiogenic device startup, system can adjust to set point with initial output volume.
After the method above adopting, audiogenic device and earphone not only can be unified on interface, and also can unify on function, same audiogenic device can adapt to the earphone of different performance, on function, support mutually, rationally expand, support more more options, and keep best output.In volume output, can adapt between earphone and the audiogenic device, be unlikely to burn out earphone greatly because of power output.
Description of drawings
Fig. 1 be existing earphone and connection layout;
Fig. 2 is the embodiments of the invention schematic diagrames;
Fig. 3 is the frequency response curve of earphone;
Fig. 4 is the pairing amplitude of each Frequency point of earphone response curve shown in Figure 3;
Fig. 5 is one of typical architecture figure of earphone of the present invention;
Fig. 6 is the demonstration schematic diagram that different earphones are worn form;
Fig. 7 is the demonstration schematic diagram of several communication modes of earphone;
Fig. 8 is the switching sequence of individual channel between audiogenic device and the earphone;
Fig. 9 is individual channel switching sequence figure between audiogenic device and the earphone;
Figure 10 adopts the present invention program's audiogenic device to be connected control method afterwards with earphone;
Figure 11 is a kind of simplification plate rack composition of earphone of the present invention;
Figure 12 is the Organization Chart of wire/wireless earphone of the present invention;
Figure 13 is typical audiogenic device system diagram;
Figure 14 is the flow chart of audiogenic device according to the output of earphone impedance parameter control audio.
Embodiment
Cardinal principle of the present invention is to add the ear-phone function properties store in earphone, has power interface, control signal interface and audio signal interface between audiogenic device and the earphone.
Fig. 2 is the embodiments of the invention schematic diagrames.Have power interface, control signal interface and audio signal interface between audiogenic device and the earphone, wherein, power interface is used for to the earphone power supply, and audio signal interface is used for providing audio signal to earphone, and the control signal interface is used for communicating between audiogenic device and the earphone alternately.Pass through control interface, can not only carry out the mutual operation on the function between audiogenic device and the earphone, as controlling audiogenic device by the button on the earphone, as volume adjusting, song selection etc., and audiogenic device can read the ear-phone function performance data of storing in the earphone functional characteristic memory in the earphone by control interface, and audiogenic device changes the audio signal form of output according to the functional characteristic data that obtain or according to the functional characteristic data that obtain audio signal carried out audio and handle back output.It is pointed out that the said interface of the present invention, can be wireline interface, also can be wave point.These interfaces can separate, and also can merge.Typically, USB(Universal Serial Bus, USB) can well adapt to needs of the present invention, it both can be used as charging inlet, also can be used as control interface, can also be as audio interface.
For earphone, some important parameters are arranged, as follows.
1) impedance of earphone, i.e. resistance and reactance on vector and.Have at desktop computer or power amplifier, VCD, DVD TV etc. on the machine of earphone jack output, the earphone of high impedance is more suitable in general the use.If use the low-resistance earphone, necessarily to turn down volume more earlier and plug in the earphone, little by little volume is transferred up again, prevention earphone overload burns out earphone or voice coil loudspeaker voice coil distortion dislocation causes distorsion, low-impedance earphone generally promotes than being easier to, therefore machine portable, power saving such as walkman should be selected the Low ESR earphone, is also noted that simultaneously sensitivity wants high, and sensitivity index is more important concerning walkman.
2) sensitivity of earphone, the sound pressure level (unit of acoustic pressure is a decibel, and the big more volume of acoustic pressure is big more) that earphone can send when pointing to earphone and importing the power of 1 milliwatt, so generally sensitivity is high more, impedance is more little, earphone is easy more speaks, easy more driving.Popular says, the sensitivity of earphone just is meant under the same situation here, needs the size of the power of input, and the high more needed input power of sensitivity is more little.For portable equipments such as walkmans, sensitivity is a very index of significant.
3) the transducing mode of earphone: according to its transducing mode, mainly be divided into the moving-coil mode, electrostatic and etc. magnetic-type.
4) form of wearing of earphone: according to its wearing mode, mainly be divided into ear type, ear suspension type and head-type.
5) earphone is simulation or numeral: traditional earphone is for simulating, as shown in Figure 1.Audio signal enters with simulated mode, directly outputs to earphone and drives the coil of earphone.Digital earphone receives digital audio and video signals, carries out the coil of digital-to-analogue conversion rear drive earphone in earphone.More senior digital earphone also comprises audio decoding unit, is used for input signal is decoded, and audio treatment unit, be used for that digital audio is carried out audio and handle.
6) if whether digital earphone has audio decoding unit.Audio decoding unit can be decoded to the audio digital signals stream of the different-format that transmits, as PCM(Pulse Code Modulation, pulse code modulation) form, MP3 format, WMA (Windows Media Audio) form, RA(RealAudio) form, or the like.
7) if having audio decoding unit, support which form, as PCM(Pulse Code Modulation, pulse code modulation) form, MP3 format, WMA (Windows Media Audio) form, RA(RealAudio) form, or the like.
8) whether have the audio processing unit.
9) earphone communication modes: wired earphone, wireless headset, still wire/wireless earphone, wherein, the wire/wireless earphone is meant that earphone both can be used as wired earphone, also can be used as wireless headset, depended on user's selection.
10) earphone sound channel: monophony, dual track, multitrack surround sound, or the like.
11) frequency response curve of earphone.Fig. 3 is the frequency response curve of earphone, be that the pairing sensitivity number of frequency is exactly frequency response, it is exactly frequency response curve that drafting pattern looks like, and the scope that the human auditory can reach is greatly about 20Hz-20000Hz, and ripe at present earphone technology has all reached this requirement.Outstanding earphone frequency response width can reach 5Hz-40000Hz.As we can see from the figure, the frequency response width of this earphone is 20Hz-20000Hz, at 200Hz to having Frequency Response preferably between the 15000Hz.Fig. 4 has provided the pairing amplitude of each Frequency point of earphone response curve shown in Figure 3 with the form of tabulation.
Fig. 5 is one of typical architecture figure of earphone of the present invention.Audio signal is exported from audiogenic device, enter earphone by audio signal interface, audio decoding unit is decoded to the audio signal data stream of input, audio treatment unit carries out audio to decoded audio signal to be handled, as bass strengthen, voice is clear, or the like, the mode that has a lot of audios to handle in the prior art.The signal of handling through audio just can output to the earphone driver element through after the digital-to-analogue conversion, as coil.Control signal is used for earphone and audiogenic device is mutual, exports to the main control unit of earphone, and main control unit not only can be controlled inner each unit, but also can communicate by letter transfer control signal with audiogenic device.The earphone parameter of being mentioned above the storage of ear-phone function properties store is typically E2PROM memory or FLASH memory.In addition, memory can be independent, also can with control program together, as the data of program, audiogenic device obtains this data by communicating by letter with earphone.In addition, data also can be independent E2PROM, when audiogenic device with after earphone is connected, this memory is as the part of audiogenic device, but it is physically located in the earphone, audiogenic device is as long as adopt the mode of operation of common E2PROM just can read these data, the DDC(DISPLAY DATA CHNNEL in this mode principle and the display, DDC) basic identical in the agreement.After the earphone audiogenic device reads these parameters, just can change the configuration of self according to these parameters, optimize internal control and adjust the mode that audio frequency is exported.Liquid crystal display is used for the demonstration of the important information of earphone.Push-button unit promptly is used for the control of earphone self, also as line traffic control Equipment Control audiogenic device.After power supply was input to earphone, power distribution unit was each unit electrical power distribution just, to support the running of each several part normal function.
For better explanation the present invention, the data of ear-phone function properties store storage are as follows:
1) impedance of earphone: 200 ohm;
2) sensitivity of earphone: 65db;
3) the transducing mode of earphone: moving-coil mode;
4) form of wearing of earphone: ear type;
5) earphone is simulation or numeral: numeral;
6) have audio decoding unit;
7) support form: PCM, MP3, WMA;
8) have the audio processing unit;
9) earphone communication modes: wired earphone;
10) sound channel of earphone: dual track;
11) frequency response curve of earphone: data as shown in Figure 4.
By the data of storing above, audiogenic device is just known the functional characteristic of earphone, thereby changes the control of himself and the output of audio signal and control signal, explanation respectively below according to the functional characteristic of earphone.
1) impedance of earphone: obtain the impedance of earphone when audiogenic device after,, regulate the output volume of earphone automatically according to the size of impedance.The impedance of earphone is divided according to high, normal, basic, if the impedance of earphone is lower than 16 ohm, then belongs to Low ESR; If be higher than 16 ohm and, then belong to middle impedance less than 100 ohm; If be higher than 100 ohm, then belong to high impedance.After if audiogenic device reads the impedance of earphone, judge that it is a Low ESR, then audiogenic device should not exported excessive volume, in order to avoid burn out earphone, perhaps damages user's ear, especially inserts the moment of earphone the user.For instance, for the Low ESR earphone, if audiogenic device output volume value is bigger when connecting earphone, then audiogenic device can be adjusted to a suitable lower value with volume output automatically, after this allow user oneself go to regulate again, avoid inserting earphone moment damage earphone according to own needs; Equally, for the bigger melody of dynamic range, in the high pitch zone, if this moment, the output volume value was bigger, also might damage earphone, when the situation that runs into high pitch, if output volume is than higher at this moment, then system reduces volume to a suitable value automatically, avoids burning out earphone.For impedance is middle and high rank earphone, when running into above-mentioned situation, then the volume threshold value that needs can be regulated be provided with higher, perhaps more simply, audiogenic device is to any processing of volume output not carrying out.
2) sensitivity of earphone: sensitivity is related with the impedance phase of earphone usually, and general impedance is low, sensitivity meeting height; The impedance height, sensitivity is low.Audiogenic device obtains this parameter and is used for the parameter demonstration, is about to parameter and shows on the display unit of audiogenic device, perhaps is used to adapt to certain needs of audiogenic device in the future.
3) the transducing mode of earphone: be used to adapt to certain needs of audiogenic device in the future here.
4) form of wearing of earphone: audiogenic device is according to the form of wearing of earphone, shows that with different figures different earphones wears form, and as shown in Figure 6, wherein A is an ear type, and B is an ear suspension type, and C is a head-type.
5) earphone is simulation or numeral: if earphone is simulated, then system directly exports the audio signal of simulation, if earphone is digital, then exports digital signal, but concrete form will be decided according to the parameter of back.
6) have audio decoding unit: if having audio decoding unit, then can export through coded digital audio signals, coded format is with reference to the support format parameter of back.If there is not audio decoding unit, then must export through decoded audio digital signals, output to earphone through decoded digital audio and video signals with the PCM form, export through after the digital-to-analogue conversion then.
7) support form: support that form shows the form that the earphone decoding unit can be decoded.When audiogenic device and earphone decoding unit are all supported certain audio format, the audiogenic device back output output of also can not decoding of can decoding.When audiogenic device is supported certain audio format and earphone decoding unit when not supporting, audiogenic device is decoded and is outputed to earphone with the PCM form behind this audio format; When audiogenic device is not supported certain audio format, and the earphone decoding unit is supported this audio format, then audiogenic device output not the voice data of decoding give earphone, for earphone decoding output.When audiogenic device and earphone decoding unit were not supported certain audio format, audiogenic device just shows did not support this audio format.Like this, when earphone was not connected with audiogenic device, audiogenic device externally showed the decoding capability that himself had, i.e. its form that can decode; When earphone was connected with audiogenic device, audiogenic device externally showed the decoding capability that decoding capability and earphone possessed that himself had.
8) if earphone has the audio processing unit, then the audio disposal ability of audiogenic device is exactly the audio disposal ability of audiogenic device and the summation of earphone audio disposal ability, it is to carry out audio by earphone or audiogenic device separately to handle that system can select, still come together to carry out audio and handle, perhaps do not carry out audio and handle and directly output.
9) earphone communication modes: audiogenic device shows different earphone communication modes according to the communication modes of earphone with different figures, just the communication modes supported of earphone.Audiogenic device promptly shows the communication modes that earphone is supported, also show the working method that earphone is current, especially for the wire/wireless earphone, system can show that its working method is wired or wireless, shows the communication modes that earphone is supported simultaneously according to current communication modes.Fig. 7 is the demonstration schematic diagram of several communication modes of earphone, and wherein A is a wired earphone, and B is a wireless headset, and C is the wire/wireless earphone, and the work at present mode is wired mode, and D is the wire/wireless earphone, and the work at present mode is a wireless mode.
10) sound channel of earphone: according to the channel information of earphone, and the sound channel of current broadcast program provides different output.If program is a monophony, then, all only export monophony no matter what type earphone is.If program is a dual track,, three kinds of selections are just arranged: L channel, R channel and left and right acoustic channels synthetic for mono headset; For dual-channel headphone, then directly output; For multi-sound-channel earphone, also only export left and right acoustic channels.If program is a multichannel, for mono headset, and dual-channel headphone, multiple combining form output can be arranged; For multi-sound-channel earphone, then directly export multi-channel audio signal.
11) frequency response curve of earphone: after each Frequency point of audiogenic device reading frequency response curve and the corresponding amplitude, then output audio signal is handled according to this curve.Below be several frequently seen processing mode:
The A mode: audiogenic device is according to the frequency response curve of earphone, obtain the frequency range of putting up the best performance, for Fig. 4, the optimum frequency scope is 200Hz to 15000Hz, then audiogenic device is only handled the audio signal of this scope, do not handle exceeding then can ignoring of this scope, thereby improve the processing speed of system.
The B mode: for the frequency response curve of desirable earphone, its curve should be a horizontal line, and promptly the response to each frequency all is the same, but reality is difficult to accomplish.For this reason, audiogenic device can be handled audio signal according to certain algorithm, thereby obtains the effect of approximate ideal.Simple processing mode is: the average response amplitude of obtaining earphone optimum frequency scope, then according to this average response amplitude, audio signal to each frequency, difference according to its actual response amplitude and average response amplitude, exceed the average response amplitude, reduce the output intensity of this frequency when then audio is handled, be lower than the average response amplitude, increase the output intensity of this frequency when then audio is handled, the output of synthetic at last back.With Fig. 4 is example, and 200Hz to 15000Hz is the optimum frequency scope, and its average response amplitude is:
（（-5）+（-3）+（-0.5）+0+3+（-3）+2+（-5））/8?=?-1.43（dBr）
From top calculating as can be seen, it gets the mean value of the response amplitude of characteristic frequency.For 200Hz, its actual response amplitude is-5, does not reach-1.43, and then the audio processing unit is exported after can improving this frequency component 3.57dBr again.For 10000Hz, its actual response amplitude is 2, surpasses-1.43, and then the audio processing unit is exported after can reducing this frequency component 3.43dBr again.Each is variant for actual processing possibility, but basic principle is all basic identical or approximate.
Described functional characteristic data how to pass through the earphone of storage above, audiogenic device changes the control of himself and the output of audio signal and control signal according to the functional characteristic of earphone.From integral body the how collaborative work of audiogenic device and earphone is described below.
Fig. 8 is the switching sequence of individual channel between audiogenic device and the earphone.When audiogenic device is started shooting, at first connect the earphone power supply, open the control signal path between audiogenic device and the earphone then, next, open audio signal path.At this moment, system begins operate as normal.When shutdown system, at first, close audio signal path, the closing control signal path is closed the power path between connection audiogenic device and the earphone at last or is closed earphone power supply (when earphone is independently-powered) then.
Fig. 9 is individual channel switching sequence figure between audiogenic device and the earphone.Behind the earphone electric power starting, open control signal in the T1 time, the T2 time is opened audio signal, and the T3 time is closed audio signal, T4 time closing control signal, and the T5 time is closed the earphone power supply.In general, T1＜T2＜T3＜T4＜T5, but T3, T4 and T5 can equate.
Figure 10 adopts the present invention program's audiogenic device to be connected control method afterwards with earphone.At first, audiogenic device reads the functional characteristic data of storing on the ear-phone function properties store, and then, the audio frequency that audiogenic device is adjusted audiogenic device according to the functional characteristic data is exported Control Parameter, last output audio signal.For different functional characteristic data tones source devices different ways is arranged, also there is description the front, repeats no more here.
Figure 11 is a kind of simplification plate rack composition of earphone of the present invention.Audio signal is exported from audiogenic device, enters earphone and outputs to loudspeaker by audio signal interface.Control signal is used for earphone and audiogenic device is mutual, exports to the main control unit of earphone, and main control unit not only can be controlled inner each unit, but also can communicate by letter transfer control signal with audiogenic device.The earphone parameter of being mentioned above the storage of ear-phone function properties store is typically the E2PROM memory.After audiogenic device reads these parameters, just can change the configuration of self, optimize internal control and adjust the mode that audio frequency is exported according to these parameters.After power supply was input to earphone, power distribution unit was each unit electrical power distribution just, to support the running of each several part normal function.
Figure 12 is the Organization Chart of wire/wireless earphone of the present invention.This earphone had both comprised wireline interface, had also comprised wave point.Can transmission of control signals and audio signal from wireline interface and wave point.Isolated audio signal flows to loudspeaker, and isolated control signal is exported to the main control unit of earphone, and main control unit not only can be controlled inner each unit, but also can communicate by letter transfer control signal with audiogenic device.The earphone parameter of being mentioned above the storage of ear-phone function properties store is typically the E2PROM memory.After audiogenic device reads these parameters, just can change the configuration of self, optimize internal control and adjust the mode that audio frequency is exported according to these parameters.After power supply was input to earphone, power distribution unit was each unit electrical power distribution just, to support the running of each several part normal function.It is pointed out that this embodiment has at first provided a kind of compatible for wired/wireless Novel earphone, has provided the ear-phone function properties store then.There is multifarious selection in the fusion separation method of audio signal, control signal, is not limited to present embodiment, can be finished by main control unit as the separation of audio signal and control signal.For the wire/wireless earphone, maximum benefit is that the user can select, though wireline interface is so not user friendly, do not have radiation, and wave point is to have bigger radiation.If audiogenic device and headset detection during to wired connection, can stop the transmission of wave point, conversely, if when detecting wired disconnection, both sides will start wave point.And when wire transmission, power supply also is the part of wireline interface, can charge to power unit, and provide electric power for various piece; When wireless transmission, the earphone internal electric source is started working, for various piece provides electric power.
The front has been described impedance and has been stored in the ear-phone function properties store as important parameters, and audiogenic device can be controlled earphone according to this parameter.
Figure 13 is typical audiogenic device system diagram.Main control unit, user input unit, display unit, audio treatment unit, memory carry out each other communication by bus.Audio treatment unit is decoded to voice data and earphone is handled and outputed to audio; Main control unit controls and exports control signal control earphone to whole system; Power distribution unit not only internally provides electric power, and also provides electric power output to earphone.Like this, audiogenic device just can be to earphone out-put supply, control signal and audio signal.
Figure 14 is the flow chart of audiogenic device according to the output of earphone impedance parameter control audio.At first, audiogenic device obtains the earphone impedance parameter, according to impedance parameter audiogenic device audio frequency output parameter is set then, and comes control audio output according to audiogenic device audio frequency output parameter.In addition, the front is mentioned, and the impedance of earphone is divided according to high, normal, basic, if the impedance of earphone is lower than 16 ohm, then belongs to Low ESR; If be higher than 16 ohm and, then belong to middle impedance less than 100 ohm; If be higher than 100 ohm, then belong to high impedance.Come more detailed description how to control below in conjunction with different audiogenic device output parameters.
It at first is output descant value.Audiogenic device is in order to adapt to the earphone of different impedances, and high, normal, basic according to impedance in system is provided with the earphone output volume restriction of audiogenic device.With the earpiece volume output area is that 0 ~ 100 audiogenic device is an example, and its output descant value is to the low-impedance earphone of senior middle school and inequality.For high impedance, its highest earpiece volume is output as 100; To middle impedance, its highest earpiece volume is output as 90, and to Low ESR, its highest earpiece volume is output as 75.Like this, audiogenic device obtains the earphone impedance parameter, judges that this earphone belongs to high impedance, middle impedance, still is Low ESR, and according to the type of impedance, system is provided with output descant value.After setting, for the Low ESR earphone, the earpiece volume output area of audiogenic device is 0 ~ 75; For the middle impedance earphone, the earpiece volume output area of audiogenic device is 0 ~ 90; For the high impedance earphone, the earpiece volume output area of audiogenic device is 0 ~ 100.When volume value occurring greater than output descant value, system can reduce output volume automatically to being equal to or less than this descant amount.
Volume when being the earphone startup then.When the user inserts earphone or audiogenic device when starting, if according to the volume output of last time, and last output volume value is excessive, then might damage earphone.Therefore, when audiogenic device detected the insertion of user's earphone, system can read its impedance, thereby judged the impedance type of earphone, and the startup volume of earphone is set according to the impedance type.Be that 0 ~ 100 audiogenic device is an example with the earpiece volume output area equally, the volume when its earphone starts is to the low-impedance earphone of senior middle school and inequality.For high impedance, the volume when audiogenic device is set its startup is 50; To middle impedance, the volume when audiogenic device is set its startup is 40, and to Low ESR, the volume when audiogenic device is set its startup is 30.Like this, audiogenic device obtains the earphone impedance parameter, judges that this earphone belongs to high impedance, middle impedance, still is Low ESR, and according to the type of impedance, when system detected earphone insertion or audiogenic device startup, system can adjust to set point with initial output volume.
From top description, be not difficult to find out, after audiogenic device obtains the impedance of earphone,, regulate the output volume of earphone automatically according to the size of impedance.Here, acting on of impedance is the tolerance degree that is used for measuring earphone in essence.The method of tolerance degree of tolerance earphone is a lot, as earphone import instantaneous maximum power, earphone input maximum instantaneous electric current, or the like, like this, as long as the audiogenic device side exceeds the tolerance degree of earphone when having the detecting unit of related physical quantity just can avoid exporting.In addition, the transducing mode of different earphones, its tolerance degree is also different.
It should be noted that at last: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only; those of ordinary skill in the art can make amendment or is equal to replacement the present invention; and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the claim protection range of the present invention.
Claims (10)
1. audiogenic device, it is characterized in that described audiogenic device comprises earphone tolerance degree acquisition module, when described audiogenic device with after earphone is connected, described audiogenic device obtains the earphone tolerance degree, and obtains the output that the earphone tolerance degree is controlled its volume according to described.
2. earphone as claimed in claim 1 is characterized in that, described earphone tolerance degree is measured by the impedance of earphone.
3. earphone as claimed in claim 2 is characterized in that, described audiogenic device comprises that also the highest output volume of audiogenic device is provided with module, and described module is provided with the highest output volume according to the described earphone tolerance degree that obtains.
4. earphone as claimed in claim 2 is characterized in that, described audiogenic device comprises that also the highest output volume of audiogenic device is provided with module, the volume when described module is provided with the earphone startup according to the described earphone tolerance degree that obtains.
5. an audiogenic device earphone output control method is characterized in that, described method comprises, obtains the earphone tolerance degree; Obtain the output that the earphone tolerance degree is controlled its volume according to described.
6. control method as claimed in claim 5 is characterized in that, described earphone tolerance degree is measured by the impedance of earphone.
7. control method as claimed in claim 6 is characterized in that, described method also comprises, according to the described earphone tolerance degree that obtains the highest output volume is set.
8. control method as claimed in claim 6 is characterized in that, described method also comprises, according to described volume when obtaining the earphone tolerance degree and earphone being set starting.
9. control method as claimed in claim 7 is characterized in that, described method comprises that also audiogenic device obtains the earphone impedance parameter, judges that this earphone belongs to high impedance, middle impedance, still is Low ESR, and according to the type of impedance, system is provided with output descant value.
10. control method as claimed in claim 8, it is characterized in that, described method also comprises, audiogenic device obtains the earphone impedance parameter, judge that this earphone belongs to high impedance, middle impedance, still is Low ESR, according to the type of impedance, when system detected earphone insertion or audiogenic device startup, system can adjust to set point with initial output volume.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103685677A (en) * | 2012-08-31 | 2014-03-26 | 华为终端有限公司 | Audio processing method and device, and terminal equipment |
| CN105530567A (en) * | 2015-12-23 | 2016-04-27 | 联想(北京)有限公司 | Output control method, control apparatus and electronic device |
| CN105872897A (en) * | 2016-03-31 | 2016-08-17 | 乐视控股（北京）有限公司 | Tone quality adjusting method and terminal |
| CN105959843A (en) * | 2016-04-29 | 2016-09-21 | 乐视控股（北京）有限公司 | Method and device for prompting earphone type, and terminal device |
| WO2016187946A1 (en) * | 2015-05-22 | 2016-12-01 | 中兴通讯股份有限公司 | Volume control method, electronic device and computer storage medium |
| CN106303830A (en) * | 2016-09-12 | 2017-01-04 | 北京小米移动软件有限公司 | Volume adjusting method and device |
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| CN112839280A (en) * | 2021-01-04 | 2021-05-25 | 广州飞傲电子科技有限公司 | Automatic earphone volume adjusting method, device, equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719946A (en) * | 2005-06-29 | 2006-01-11 | 比特联创电子（北京）有限公司 | Passive electroacoustic apparatus and its playback method |
| 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 |
| CN101119106A (en) * | 2007-07-12 | 2008-02-06 | 深圳市融合视讯科技有限公司 | Output volume automatic regulation method of media player |
| CN101729958A (en) * | 2008-10-24 | 2010-06-09 | 深圳富泰宏精密工业有限公司 | Audio frequency output device |
-
2010
- 2010-10-22 CN CN2010105164067A patent/CN101964932A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719946A (en) * | 2005-06-29 | 2006-01-11 | 比特联创电子（北京）有限公司 | Passive electroacoustic apparatus and its playback method |
| 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 |
| CN101119106A (en) * | 2007-07-12 | 2008-02-06 | 深圳市融合视讯科技有限公司 | Output volume automatic regulation method of media player |
| CN101729958A (en) * | 2008-10-24 | 2010-06-09 | 深圳富泰宏精密工业有限公司 | Audio frequency output device |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103685677A (en) * | 2012-08-31 | 2014-03-26 | 华为终端有限公司 | Audio processing method and device, and terminal equipment |
| WO2016187946A1 (en) * | 2015-05-22 | 2016-12-01 | 中兴通讯股份有限公司 | Volume control method, electronic device and computer storage medium |
| CN106303815A (en) * | 2015-05-22 | 2017-01-04 | 西安中兴新软件有限责任公司 | Method for controlling volume and electronic equipment |
| CN105530567A (en) * | 2015-12-23 | 2016-04-27 | 联想(北京)有限公司 | Output control method, control apparatus and electronic device |
| CN105872897A (en) * | 2016-03-31 | 2016-08-17 | 乐视控股（北京）有限公司 | Tone quality adjusting method and terminal |
| WO2017166686A1 (en) * | 2016-03-31 | 2017-10-05 | 乐视控股（北京）有限公司 | Method and apparatus for switching to external loudspeaker |
| CN105959843A (en) * | 2016-04-29 | 2016-09-21 | 乐视控股（北京）有限公司 | Method and device for prompting earphone type, and terminal device |
| WO2017215203A1 (en) * | 2016-06-17 | 2017-12-21 | 中兴通讯股份有限公司 | Signal output method and apparatus |
| CN106303830A (en) * | 2016-09-12 | 2017-01-04 | 北京小米移动软件有限公司 | Volume adjusting method and device |
| CN108270913A (en) * | 2017-01-04 | 2018-07-10 | 中兴通讯股份有限公司 | A kind of mobile terminal and method for protecting hearing ability |
| CN108270913B (en) * | 2017-01-04 | 2021-02-19 | 中兴通讯股份有限公司 | Mobile terminal and hearing protection method |
| CN109348366A (en) * | 2018-11-12 | 2019-02-15 | 维沃移动通信有限公司 | A kind of method and mobile terminal for realizing volume adjustment using electrical parameter |
| CN109348366B (en) * | 2018-11-12 | 2022-07-29 | 维沃移动通信有限公司 | Method for adjusting volume by using electrical parameters and mobile terminal |
| CN112839280A (en) * | 2021-01-04 | 2021-05-25 | 广州飞傲电子科技有限公司 | Automatic earphone volume adjusting method, device, equipment and storage medium |
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Application publication date: 20110202 |