The sound quality is macroscopic. Everyone has different requirements for the effect of music. The price of headphones is from 9.9 to 3W. The propaganda is a fever earphone. The earphone is such a product of deep water! "Fever sound quality" Words can fool a lot of people! The objective definition of sound quality can be introduced in detail under Baidu Encyclopedia.
Everyone's appeal to sound quality is different, so I divide the user's sound quality requirements into five levels:
1. The primary type likes the super bass or the maximum volume, the bass is enough to stimulate & the maximum volume will not break the sound is good headphones
2. The intermediate type is not a special case. It will not adjust the volume of the device to the maximum. It can distinguish the sound quality of different levels of headphones. You can gain experience from the quality of the previous earphone and upgrade the next earphone.
3. Advanced type of tri-band quality and smooth connection of headphone performance, horizontal and vertical sound field, analysis, dynamics, tone, loudness, etc. can be felt and expressed in language and have their own requirements
4. Fever type on the basis of advanced users for the final performance of the headset: front-end (player) music files (format and quality) headphone amplifier and a variety of headphones around have a wealth of relevant knowledge and rich product experience
5. The ashes level is based on the fever type. The knowledge surface penetrates into any part of the earphone and the different influences of the material grade of the part. The characteristics of different earphones and the influence of different structures on the sound have different degrees of DIY. Headphone ability, headphone component selection and capture capabilities!
Probably on these 5 levels, check in, if you disagree with my point of view, then it does not matter... you can re-set yourself!
Headphone parameters that are easily misunderstood:
1. Sensitivity : ie sound pressure, unit: db Chinese: decibel, the general unit of sound (including noise) The higher the sensitivity parameter at the same volume, the louder the loudness (sound) of the headphones!
Misunderstanding: high sensitivity is good headphones - in-ear headphones sensitivity exceeds 100 decibels or more ear load is relatively large, except for products with virtual standard sensitivity (you can not Baidu under the class)
Reason: In-ear and flat headphones cannot be measured with the same sound pressure level (sensitivity):
1. The flat-headed earphone is only stuck in the auricle. Only some of the sound of the earphone will leak a lot of sound when entering the ear canal (hence the open type), so the sensitivity is higher than 100db is common;
2. The in-ear earphone seals the ear canal, and the ear sounds from the earphone are basically all received, especially the ear-in-ear earphone. From this physical reason, the sensitivity of the ear-in-ear earphone should not be higher than the sensitivity of the flat-head earphone (person thinks it is in the ear) The sensitivity of the headphones is not higher than 100db is more suitable)
2. Resolution: Headphones for music detail reduction
Myth: high resolution is good headphones
Reason: A good-resolution earphone can hear more details when listening to music. The upper ear feels better, but the headphone resolution is too high, the possibility of noise is also increased, and it is easy to hear the vocal teeth. The sound affects the sense of hearing, and the image is like a metaphor: the resolution of the earphone is like the sharpness of the picture. If it is over, it is not natural!
Some sellers say that a good earphone is sure that the noise is not completely correct. It can only be said that the headphones with too high resolution are more likely to hear the noise and the tooth noise!
3. Noise floor
Myth: This earphone has a noise floor. The noise is not in the earphone. The earphone is just the medium that accepts the analog signal from the source to make a sound!
Source of noise floor:
1. Playback equipment: The noise floor is basically present, and the playback equipment will have a signal-to-noise ratio (only the manufacturer can't identify you). Because of the different equipment and headphones used, each person perceives and tolerates the noise level is not the same. Inconclusive, but the headphone resolution is too high. It is easier to hear the noise floor of the device when using some devices! (Normal human ears can basically hear the sound of 20-20KHz band)
2. Music files: Currently popular music files include MP3WMA AAC APE FLAC OGG WAV, etc. The noise floor may also exist in these files, especially the low quality MP3 is the most common, obviously such as: 128K ratio files, in actual use A song you hear has a similar sound of current, other songs can not hear the basic can be judged to be a file problem, re-download quality can generally be solved!
4. Popping and breaking
1. If on the handheld device (not the handheld device is not in this range), the normal 80% volume headphones will appear like "å™—, å™—, å™—". The noise can basically be determined as the quality of the headphones. Please contact the seller after the sale to replace!
2. If the noise of "å™—, å™—, å™—" appears continuously at the maximum volume of 100%, please try to adjust it back to about 80%. If it returns to normal, then you can conclude that the output power of the device is greater than the capacity of the earphone. Please replace the device. Or replace the headset to use on this device!
V. Hearing tolerance
When you use the headset for a while and then feel tired and have to take it off, then the hearing tolerance of this headset is also here; some students only pursue the feeling of the upper ear, think that the super bass sound is very cool, after a period of use Feeling tired to take off the headphones, they think this is normal, in fact, the earphones' hearing resistance affects the time you use; the factors that affect the hearing resistance are mainly the sensitivity resolution of the headphones mentioned above, as well as the headphone loudness and three The frequency of the connection brings out the overall music effect is soothing and smooth!
Hearing tolerance is a concept that varies from person to person. Different people's different demands have different results. Some earphones with good hearing tolerance are very high. Super bass is very good. So just like it is right!
6. Comfort
Affecting the wearing comfort of the earphone is that the structure and size of the earphone are not in line with the user's ear, which is a physical reason. Some earphones are uncomfortable to wear, and there is no need to talk about hearing and intolerance! It has been popular since the past few decades. The flat-head headphones to the current popular in-ear headphones can not completely fit the difficulties of everyone's ears... can only be improved infinitely!
For example: Love mad 5 earpods headphones are excellent ergonomic design, open the sound quality, the structure of the combination of flat and in-ear features called earpods semi-in-ear, it is indeed better than many headphones in wearing comfort, get Thanks to Apple's data acquisition ability to create such a good design from the human ear data of different populations... The actual use of the ear to my ear also gives the basic identity, but my ear is too small to wear for more than half an hour or feel the ear is tired !
Therefore, the mainstream headphones can not be 100% suitable for everyone's ears. There must be exceptions! The perfect one is only the custom-made headphones according to the user's ear... The price is not the same as the tailor-made suit!
Seven. Wire
1. Security
At present, some of the earphones use the "anti-ballistic" wire to sound very high-tech, and the anti-pull anti-break fiber is added to the wire to increase the resistance of the earphone wire to 15 kg or more. Indeed, objective use is not It will break, not bad!... However, many materials in the EU are forbidden to use... The reason for the 5 kg pull is enough to kill children... In fact, many foreign brand headphones will not highlight this material! Correctly speaking, it should be called "anti-broken wire" to estimate which country's pronunciation is not correct. It is called "anti-ballistic wire"! It is not that "ballistic wire" is not good, just reminding from the safety point of view to avoid letting children play, they will not just use it. Listen to the song!
Misunderstanding: The ability to use the "bulletproof wire" wire is enhanced, but the speaker welding position and the soldering position of the plug are easily pulled off and the welding is unchanged!
2. Material grade
The wire of the earphone is from ordinary copper wire to oxygen-free copper wire. The wire of different grades of earphones adopts the grade of copper wire and the number of cores; the use of higher-grade wire on the basis of sound quality or fever headphones can improve the quality of the earphone to a certain extent. For example, the silver wire or some brand wires such as: the heart of the ocean, the ancient river and the like... can be icing on the cake but will not completely change the quality of the earphones, so the specifications of the earphones produced by the big brands are rarely highlighted in the specifications of the wire! The ashes or fever players need to raise the quality of the headphones to the extreme or the original wire has been worn out and will be replaced. The domestic earphone manufacturers participate in the wire grade identification in order to highlight their high level of headphones, so that it can be sold expensive. Some or many!
8. Shell material
Plastic
In the history of headphones in the past few decades, plastic has been used as the material of the earphone housing. Although plastic is a cheap symbol in the minds of ordinary people, headphones made of plastic have always been the main choice for big brand headphones, such as: Sen Hai Searle--60 years of acoustic technology precipitation, the industry is stunned! 99% of the history of classic headphones or the main body is plastic!
the reason:
a. The plastic is very light and the ear is extremely sensitive to the nerves and acupuncture points. Only the lightest possible to ensure a more comfortable wearing state, the skin-friendly nature of the plastic is also better;
b. The plastic shell can meet the fluid design, the shape of the acoustic cavity is variable, and there is no right-angled edge position.
c. The overall effect of the sound reflected in the plastic cavity and the resonance of the plastic cavity is excellent. The sound of good plastic headphones is much warmer and less cold!
2. Metal housing
The earliest impression of the metal shell was Huatai OVC. At that time, the OVC product structure was a metal-shelled earphone. The cool appearance was liked by many people. In the past ten years, metal headphones have been 90% domestically designed. However, the metal material headphones are all over the meteor and do not leave a lot of particularly profound classics!
the reason:
a. The metal earphone has low development cost and no need for mold. As long as the machining center input into the structure file can be output one by one, it does not need to meet the minimum order requirement of the injection molding factory, and can be flexibly modified.
b. The appearance of the metal shell is cool and durable, and there is no chipping. The disassembly and reassembly are not easy to cause damage to the shell, especially suitable for DIY category and small workshop production.
c. Metal earphone housing is generally heavy, made of light metal material, but still not as light as plastic, the upper ear can still feel cold, skin-friendly!
d. Metal earphones are more difficult to meet the complete fluid design. They will have a right angle at different degrees. If you touch the ear, it will be uncomfortable. Of course, the ear is big enough to touch it.
e. The sound cavity of the metal earphone can only be changed in a straight shape. The metal earphone can only manufacture the product of the straight ear type. The ergonomic side-in-ear earphone can not be used. The mechanical cutting can not be turned.
f. The sound is reflected in the metal cavity and the resonance is completely different from that of the plastic. The metal earphones have a strong sense of speed and come faster. The medium frequency is partial to female voice, the resolution is high, and the sound is cold. I like this style. Choice, there are also can make warm sounds, individually!
3. Wooden shell and ceramic shell
Among the home audio systems, the classic models of wooden speakers are the most. The principle of the earphones is the same as that of the speakers. Therefore, the wooden earphone casing should be the best in theory, but the wooden earphone casing should have the same thickness as the speaker wood. It is possible that the earphones are easily crushed and can be done...but the possibility of mass production is low for luxury brands! For example: limited edition, ceramic earphone products have existed for several years, and the plasticity is very strong, looking forward to classics. Born...
In combination, it feels that the headphones of plastic material are more loyal to the performance of the sound; the metal earphones are like the cabinets without marble or cement board, the spring water is cool, of course, you should put the appearance in the first metal earphones may be the first choice: For example, the recent "sound quality artifact" fever design... just no quality of fever! The pistons that Rebs picked from 1000 designs really look good for a fever... but the sound quality is far from the fever.
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