[PConline popular science a minute] a lot of friends think before contrast " earphone is to hear a sound " , the last few years follows the be current that sheds media music platform as a result of nondestructive music, of consumer standard of living rise, earphone firm increases brought brought product line to extend, increasing friend can care about the expression of earphone. Besides sound quality, exterior design, or a few add functions, can be in consumer choose and buy when by the consideration. Among them, fall function of a confusion of voices can say is the function that is held in both hands by consumer heat.
Fall does function of ear of a confusion of voices protect audition?
Look from consumer behavior, fall earphone of a confusion of voices in recent years conflagration, be with social big environment, of user state of mind and consumption level be closely bound up. Below enormous life pressure, fall earphone of a confusion of voices is the port that conveniently can get beside a lot of friends. Wear earphone to start fall pushbutton of a confusion of voices, the music that oneself like is enjoyed below quiet environment, after busy job passes, be one kind is loosened. So comfortable use setting, add the noise in falling to earphone of a confusion of voices still can hold off office effectively or differ brigade setting, both syncretic, believing is a lot of friends are bought fall the source motivation of earphone of a confusion of voices.
Audio blocks effect
Fall to earphone of a confusion of voices appears even if create quiet listen respectfully bad situation for us, is this to let us enjoy music better? Fall actually earphone of a confusion of voices is made come out, it is for the target of a deeper administrative levels -- it is protective audition.
Too big noise has very big effect again to musical detail, this is to result from audio blocks effect: Although all sound can enter our ear, but if be put in a stronger voice and a younger voice at the same time, we can experience stronger voice is clearer and younger voice to be able to be masked. Simple for, although no matter be stronger voice or younger voice,exist, and younger voice is not to disappear before stronger voice, be masked however, cause us " hearing " do not listen.
Noisy environment issues use earphone to be damaged to acoustic
Because of the existence of sound screen effect, a lot of people listen to music to be able to move earphone volume in the late night small, and mix of volume of need general earphone is if the song hearing in the noisy need outdoor is taller.
A lot of friends like to adorn when taking public traffic tool music of earphone listen respectfully, can dismiss already so the dull time on the road, can isolate effectively again the noise of the outside. Because want isolation outside noise, because this a lot of friends choose earphone of type of pleasant to hear not only, still can drive volume relatively a few more greatly, if choose, is crop a place of strategic importance, the volume that drives possibly then is a bit larger. The feeling that is surrounded by musical sound by the side of ear is pretty good, but if all the year round tired day is exposed in this kind of condition, damage hearing very easily.
Generally speaking, diligent medium volume meets car to be controlled in 50~80 decibel, want to fall to hear voice from inside earphone in so big noise environment, what move the volume of earphone with respect to need is enough big. If be used continuously time is too long (exceed 1 hour to calculate commonly long listen respectfully music) , and repeat everyday if, be can certain to aural generation influence. As long the harm of music of large volume listen respectfully rises to surface gradually, no matter be manufacturer or consumer, deliver the view to fall earphone of a confusion of voices.
Fall the distinction of earphone of a confusion of voices
But fall function of a confusion of voices to earphone, really in last few years new issue? In " fall earphone of a confusion of voices " before this classification is arranged, the earphone that go up contains market to fall certainly function of a confusion of voices, and the earphone that realizes these functions, it is our hep Bao Er actually type head wears headphone, with earphone of type of pleasant to hear.
Why to say these two kinds of earphone are contained fall function of a confusion of voices? Wrapping ear type head to wear headphone is the kind isolation noise through surrounding ear, and earphone of type of pleasant to hear is the way of earcap fill ear that makes character through the material such as silica gel, achieve soundproof result thereby. What kind of level can the sound insulation effect of two kinds of earphone reach after all? We are with the product page of Er of easy of famous frequency equipment exemple refer.
From the information on the picture we can understand, in choose the earcap with appropriate measure (include sponge to cover cover with silica gel) , below the circumstance that adorns correctly, can realize what apparent block breaks outside noise to fall effect of a confusion of voices. In daily life, such adorning the effect is already enough and contented many friends about soundproof demand. Already effects of some earphone sound insulation already so good, why can you still have fall actively the occurrence of earphone of a confusion of voices?
On one hand, the ear opportunity of traditional pattern has a few to use the inadequacy on the experience, head of bag ear type wears headphone and do not suit to adorn below relatively torrid weather for example, earphone of type of wired pleasant to hear can have stethoscopic effect when use (point to when to using, make because of motion wire happening chafes and produce noise) . On the other hand, certain noise, noise of the low frequency in waiting like aircraft engine sound, as a result of its frequency paragraph characteristic, fall very hard through passivity the means of a confusion of voices is eliminated completely (traditional airtight type earphone can come true only in be opposite, high frequency audio falls a confusion of voices, want those who realize the low frequency in be opposite to fall a confusion of voices is very difficult) . To settle these cases, fall actively emerge as the times require of earphone of type of a confusion of voices.
In specialize in aviation for military use to fall the Bose of earphone of a confusion of voices rolled out the first to fall 1999 Aviation Headset X of earphone of a confusion of voices, but the toy that earphone of a confusion of voices falls inside very long period of time or belongs to a small number of people in this, only the person of the professional domain such as army and airline is being used. Nevertheless as city environment blatant with each passing day, consumer is right of circumjacent environment halcyon spend a requirement to rise with each passing day, increasing manufacturer begins attention to fall earphone of a confusion of voices this market, offer for consumer richer fall choice of earphone of a confusion of voices.
In recent years the progress of DSP chip technology, let BOSE be gotten alone no longer fall a confusion of voices is coquettish. Many frequency manufacturers begin to begin to study DSP chip, make those who belong to oneself fall a confusion of voices is algorithmic, rolled out in succession fall product of earphone of a confusion of voices, won get numerous market severally. Because DSP chip can bale,plan sells, we can see a few new brands also can join battle group through common standard even. When choosing earphone accordingly, we still had better try personally first listen.
Present industrial condition lets make fall earphone of a confusion of voices no longer difficult, but at the same time on a product contented noise is eliminated, the demand that adorns the experience still has music to behave of course can not allow easy. How to have a balance in the character of all sorts of conflict, it is the test of pair of product research and development. So fall what is the principle of earphone of a confusion of voices after all, whether can be it brought compared with traditional earphone more outstanding fall effect of a confusion of voices?
Wear fall is earphone of a confusion of voices quiet? You are misunderstanding having what
Fall a few this years the new wind direction when earphone of a confusion of voices has made product of frequency of individual of consumer choose and buy. The choice falls earphone of a confusion of voices, the environment that can let listen respectfully music becomes more quiet, need minor volume only can sound of clear listen respectfully, audition of can effective protection is returned while this makes use experience comfortable. Add fall earphone of a confusion of voices is wireless design more, it is to let consumer be enjoyed well more fall the advantage of earphone of a confusion of voices.
Hereinbefore, we arrive a little " fall earphone of a confusion of voices " this concept, already did not calculate the case with new what actually. Come from broad sense effect say, the earphone that cuts off certainly can undertake to outside noise in use process, calculate actually going up is to fall earphone of a confusion of voices. Better to achieve fall effect of a confusion of voices, the manufacturer is passed in earphone inside buy electron falls system of a confusion of voices (fall actively a confusion of voices) , will come true more outstanding fall effect of a confusion of voices.
Fall does the electron inside earphone of a confusion of voices fall is system of a confusion of voices after all how work? The principle plan that there is earphone of one Zhang Jiang a confusion of voices above can help everybody understand a principle better. OK and simple understanding is, the electron falls after system of a confusion of voices is collecting environmental noise, undertake an analysis through handling chip, generate as equal as outside noise retrorse sound wave next, counteract noise, come true thereby fall the effect of a confusion of voices. To achieve such result, fall actively composition of interior of earphone of a confusion of voices is pickup (noise of mobile phone environment) , processing chip (analytic noise) , loudhailer (generate resonant sound wave) , power source system, finish whole fall process of a confusion of voices.
Contrast uses physical method to cut off only the earphone of type of pleasant to hear of noise and enclosed the head wears headphone, because pass algorithm to have sound insulation, because this falls,effect of a confusion of voices still is quite pretty good. However, had used fall the friend of earphone of a confusion of voices can be experienced, fall earphone of a confusion of voices is to be able to make the world quiet, but either " whole world is quiet " . Using fall in the process of earphone of a confusion of voices, want music to stop only, we or meeting hear the voice of a few outsides. Of come to an agreement or understanding fall earphone of a confusion of voices, fall a confusion of voices so effect of a tiny bit?
We introduced to fall above the principle of earphone of a confusion of voices, be after analysing noise through collecting, as equal as outside noise retrorse sound wave generates inside earphone, counteracted noise, implementation falls the effect of a confusion of voices. Be in acoustics in, this kind of practice cries " photograph disappear is interfered " . But the means that interferes through photograph disappear, can not filter all sound, we or meeting hear more high frequency voice.
Why to wear fall does opportunity of ear of a confusion of voices feel whole to world sound becomes high frequency?
Some friends are worn beside fall earphone of a confusion of voices, the environmental sound that can feel to still can be heard becomes high frequency. Not be to fall actually earphone of a confusion of voices becomes environmental sound high frequency, fall however earphone of a confusion of voices is main sound of the low frequency in filtering, so we can hear high frequency environment voice.
That why it is medium that photograph disappear interferes what this kind of means basically is aimed at low frequency? From inside the undee graph contrast above we can see, in longer and the weaveform of low frequency is stable, high frequency weaveform is compared short and change is very sharp. This can be fallen well with respect to noise of the low frequency in meaning the microphone collect in earphone of a confusion of voices and appropriate processing, and high frequency noise is being returned very likely before was not being caught by microphone, had been heard by person ear.
And in light of combinative life setting, fall earphone of a confusion of voices the character of this kind of have no alternative, also be quite convenient and daily fitly use. The frequency limits that person ear can hear is 20Hz-20KHz, in the sound that appears in daily life, major environment and traffic noise (engine and ground chafe) it is to be inside 100Hz-1KHz limits, the frequency limits of voice is 100Hz-8KHz, of the car cry the flute, intense knock, frequency that bump will be taller. To can eliminate the noise that affects listen respectfully music effectively, fall for the most part of earphone of a confusion of voices it is in the light of frequency paragraph between 100-1KHz.
How reasonable use fall earphone of a confusion of voices
Spoken parts in an opera fall earphone of a confusion of voices and common earphone are distinguished without what, just increased to fall function of a confusion of voices.
In exceed 1KHz this frequency paragraph in positional sound, having one share is such as horn resounds, the clew sound such as subway alarm. Fall to avoid consumer to be used on the road risk produces when earphone of a confusion of voices, combine oneself characteristic, fall earphone of a confusion of voices is right 1KHz above frequency paragraph fall effect of a confusion of voices is met not do that is heavy, avoid consumer to produce an accident when use. A lot of people feel to fall earphone of a confusion of voices is quiet, can enjoy music in communal circumstance to the top of one's bent, but at that time we also need to notice safety, give a state to fall especially, no matter whether be to fall,additionally earphone of a confusion of voices shoulds not be when use adjust volume exorbitant, also need to notice to adorn not for long at the same time fall earphone of a confusion of voices, lest injure audition.
Fall in the choice when earphone of a confusion of voices, suggest to choose a Dai Shi to fall quite earphone of a confusion of voices, compare earphone of type of pleasant to hear, the head wears type earphone structure to let it have more comfortable adorn experience, fall Dai Shi saying a head will fall on ability of a confusion of voices earphone of a confusion of voices falls generally than type of pleasant to hear earphone of a confusion of voices is close friends on many. Of course this needs to have righter choice according to individual demand.
PConline summary
Want to adorn good case falls only, advocate of passive union fall earphone of a confusion of voices, the effect or perfectly. If be used daily, fall actively confidential of ear of a confusion of voices is practical many. Of course, we are being used fall earphone of a confusion of voices when also need to understand, fall earphone of a confusion of voices is not all environments sound is eliminated, can be opposite however major environmental voice is eliminated, give out a relatively quiet hearing environment. The basis falls the character of earphone of a confusion of voices, be known correctly and use fall earphone of a confusion of voices can be on certain level is OK reduce audition effectively to injure.
