One word that enthusiasts often hang on their lips may be HiFi, which is an abbreviation for high-fidelity, meaning high fidelity, which means low distortion. Before this vocabulary appeared, the recording and playback technologies were quite backward, but after the emergence of high-quality recording and playback technologies, the sound played back was far closer to the reality than the old technology. But with the passage of time, the meaning of HiFi has begun to change. It has become a pure symbol, representing a realm sought by audiophiles, just a realm, not a standard. What is this state? That's the pursuit of good-sounding sounds. Real sounds don't necessarily sound good. So when looking at the literal meaning of the text, the understanding will deviate from the actual. It is the current monitoring equipment, which is for the accurate reproduction of the sound, but it is more like "HiFi". The word HiFi, just like "comrade", "miss", and "expert" in popular spoken language, has changed its meaning.
We have spent a lot of time describing timbre, clarity, dynamics, transients, etc., but this article is about distortion, what is distortion? As long as it does not match the original recording, all of them are counted as distortion, whether it is caused by equipment defects or intentionally rendered.
Many articles have deliberately emphasized high fidelity, and the subtext is that distortion is bad and wrong. "Yo, this speaker is so distorted", this kind of sentence is often accompanied by this despising tone. Is the distortion good or bad? We still use pictures to illustrate.
This is the couple we met together in Beijing's Yinxing Street in autumn. This is the original film. It was golden autumn, yellow leaves everywhere, golden sunlight slanted into the ginkgo forest, all eyes were full of golden colors.
Original film
Based on this time background, we strengthened the color. It has been distorted relative to the original film, its tone has become a lot more intense, it looks more bright and bright, and it looks better. In this processing result, the distortion brings better, it makes the atmosphere look more romantic, I believe most people will like this distortion.
Strengthen the color to give a romantic color
After another fading process, the golden world disappeared, and it was distorted relative to the original film, but this distortion made people feel that the film was not as good as the original film, and it lost its intimacy.
Fading treatment
Further enhancing the color and using soft light processing, we got this result. The color is very rich, but this distorted result will not be accepted by everyone.
Soft light treatment
This kind of treatment is obviously unacceptable, and its distorted color tone has completely destroyed the original feeling.
Unacceptable distortion
We used this set of photos to demonstrate whether the distortion is good or bad for the final result. The result of the comparison is that incomplete distortion is bad. Appropriate distortion can sometimes strengthen the theme. For this distortion, we prefer to use a It is a good vocabulary to describe, this word is "modification", whether it is "distortion" or "modification", the result it produces is not the same as the original information.
Electronic design is also trying to reduce its size while continuously improving the performance of the whole machine. From mobile phones to smart small portable products, small is always the same pursuit. High-density integration (HDI) technology enables end-product design to be more compact while meeting higher standards of electronic performance and efficiency. HDI is currently widely used in mobile phones, digital (camera) cameras, MP3, MP4, notebook computers, automotive electronics and other digital products, among which mobile phones are the most widely used. HDI boards are generally manufactured using a build-up method. The more times the layers are stacked, the higher the technical grade of the board. Ordinary HDI boards are basically one-time laminate, high-order HDI uses two or more layers of technology, and adopts advanced PCB technology such as stacking holes, plating holes, and laser direct drilling. High-end HDI boards are mainly used in 3G mobile phones, advanced digital video cameras, IC carrier boards, etc.
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