Knowledge

What is earphone sensitivity

Headphone sensitivity refers to the sound pressure level that the earphone can emit when inputting 1 milliwatt of power to the earphone (the unit of sound pressure is decibels, and the higher the soun

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What does the impedance of the earphone mean

The impedance of earphones is the abbreviation of their AC impedance, which refers to the blocking effect on AC power in circuits with resistors, inductors, and capacitors. The unit of impedance is oh

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Four tips for selecting game headphones

No matter what type of game you play, whether it's action RPG or FPS, good sound effects will make your gaming experience even better. Even if you have equipped your PC with premium speakers, you stil

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What is the difference between game earphones and ordinary earphones?

There are many differences between game earphones and ordinary earphones. The positioning of the two earphones is different, and their functions will also have significant emphasis. Game earphones pay

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Can I bring the charger on board？

Chargers can be brought on board the aircraft, but there are regulations for charging banks. 1. Charging banks with a capacity of less than 20000 mA can be carried on board the aircraft through securi

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What does camera autofocus mean？

Auto Focus is a method of using the principle of object light reflection to receive the reflected light by the sensor CCD on the camera, and driving the electric focusing device to focus through compu

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How to choose the camera focal length

With different viewing angle widths, the smaller the number of mm, the larger the area at the same distance. 4mm, 6mm and 8mm of the camera refer to the lens focal length. The larger the focal length

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What does HD mean？

HD HD is the Chinese abbreviation of "High Definition" in English, which means "high resolution". It has four meanings: high-definition TV, high-definition device, high-definition format, and high-def

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