Hi-Fi is the abbreviation of English High-Fidelity, literally translated as "high fidelity", which is defined as: a replay sound that is highly similar to the original sound. So what kind of audio equipment playback sound is Hi-Fi? It is still difficult to draw a definitive conclusion so far. Professionals in the audio industry use various instruments to detect various indicators to determine the level of Hi-Fi equipment. Audiophiles often use their own ears to determine whether the equipment meets Hi-Fi. . Judging the high fidelity of the playback sound requires not only equipment and software with excellent performance, but also a good listening environment. Therefore, how to correctly measure the Hi-Fi level of audio equipment, there are still differences between objective test and subjective evaluation.
Hi-Fi headphone features
1. The sound is pure, without any unpleasant "嘶", "ç¿", "å“„" sound.
2, the balance is good, the tone is too bright or too dark, the high-frequency low-frequency energy distribution is even, the fusion between the bands is natural smooth, no abrupt and burr 3, high-frequency extension is good, delicate and supple.
4, low frequency dive deep, clean and full, full of flexibility and strength, without any fat, slow feeling.
5, the intermediate frequency distortion is very small, transparent and warm, the human voice is natural, thick, magnetic, not exaggerated and nasal.
6, the resolution is good, the details are rich, and the tiny signals can be played back clearly.
7. Good sound field characterization ability, wide sound field, accurate and stable instrument positioning, sufficient information volume in the sound field, no hollow feeling.
8, dynamic no obvious compression, has a good sense of speed, no distortion or distortion at high volume.
Maintenance
1. It is best not to wear headphones when sleeping, which will cause the headphone cable to wrap around the neck or the wires are screwed together, and even the casing may be crushed. If you need it, the best way is to hang up the headset and hang it on the headboard with the rubber band around the head. This will not push the headphones even if you turn over.
2. After using the headphones, wipe off the sweat on the headphones. These human secretions are the stealth killers of the wire. After a long time, the wire will age and eventually lead to seaming and breaking.
3. Be sure to turn off the volume of the small source device before use. If the volume of the output device is too large, not only will the ear be damaged, but the light will break the film folds, and the heavy one will burn the voice coil of the earphone.
4, headphones away from strong magnetic. Otherwise, the magnetic properties of the magnet of the unit will drop, and the sensitivity will decrease over time.
5. Keep headphones away from moisture. The pads in the earphone unit will rust and the resistance will increase, causing the headphones to be biased.
6, the plug part. If the mp3 and other portable player are placed in the trouser pocket, the plug outlet part is easily folded, resulting in disconnection.
7. Do not disassemble the headphones casually. This can result in complete damage to the headphones.
8, winter is best not to use outside. The winter weather is cold, the wire is hard and brittle, and excessive bending can easily break the wire. At this time, the earphone wire cannot be heated, and the high temperature will accelerate the aging of the wire.
9. Stay away from chemicals. The paint on the earphone casing is easily dissolved in organic chemicals.
10. Ensure that the earphone net cover is clean and do not allow excessive exposure of the unit to dust.
11. During use, the headphone cable should be protected from manual damage such as pulling and heavy pressure.
12. Newly purchased headphones should try not to play CS games right away. Because the various sound effects in CS are relatively irritating for new headphones with tight diaphragms. Therefore, you should first use the more soothing music to carry out the appropriate "褒", and then use it slowly after entering the state.
13, the headset can not withstand frequent beatings, and sudden high-altitude pulling, this will be a great deal to the overall headset, voice coil, diaphragm and wire.
14, when pulling the headphone plug, grab the plug at the front end, do not hold the line directly to pull 15, the earphones are private items, it is best not to use AC, be sure to clean after use, the earplugs should pay more attention.
16. Pay attention not to fold the line when you take the line, but use a certain arc to close the line to avoid the wire breaking.
17. Most earplugs are designed with sound-insulating cotton outside the venting holes on the back to prevent the magnets from inhaling dust and accelerate aging. It is recommended not to remove the sound-insulating cotton; the front of most earplugs uses a relatively fine mesh to prevent large dust from entering. It is recommended to add a sponge cover when not using earplugs for a long time.
In general, the user should pay attention to the earphones that fit the Walkman. Due to the battery power limitation of the Walkman, the output power of the Walkman is generally only a few milliwatts, so the sensitivity of the headphones for the Walkman is very high. Its power bearing capacity is also relatively low. Such headphones must be very careful if they are used on a desktop CD player or on a computer. The excessive volume causes the earphone coil and diaphragm to be deformed, causing a loop or burn.
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