As follows:

Information expansion: MP3 player purchase

1. Styling: Excellent styling design not only expresses the uniqueness of MP3 Different, it is also one of the most important signs to determine the quality. Although you cannot judge a book by its appearance in life, for artificial products such as MP3s, the accuracy of "judging an object by its appearance" is almost 10% accurate.

2. Display screen: In terms of color effects, naturally the higher the number of colors, the better. The screen material is LTPS (Low Temperature Polysilicon, low temperature polysilicon display) which is better than TFT, TFT (thin film) ?transistor, thin film transistor) is better than STN (Super Twisted Nematic, super twisted nematic). As for the OLED (Organic light-emitting diode, organic electroluminescent display) color screen, it is more advantageous in the dark, but not as good as TFT Display complex pictures like STN.

3. Chip: The most important chip is the storage and decoding chip. Manufacturers usually do not disclose the information of the memory chip. Of course, the quality of chips from major manufacturers is better. Unfortunately, it can only be seen after disassembling the machine, so it is not mentioned. Whatever. As for the decoding chip, it has been mentioned in many MP3 reviews. It not only determines the speed of audio processing, but also determines the special sound effects function of MP3. Of course, the decoding chip is also one of the most important parts that affects sound quality. The algorithm of the APU (Audio Processing Unit) plays a decisive role in the restoration of the waveform. Although the MP3 format is also lossy compression, the sound quality of MP3 will be greatly improved by using a high sampling rate. However, MP3 audio files with high sampling rates require decoding chips to support high data streams, and the decoding chips used in cheap products are obviously not capable at this time.