Decoding chip, its role as the name suggests is to decode the MP3 file stored on the media. It is the most important part of MP3's work, which greatly affects the final sound quality performance.
MP3 is a lossy compression format, if the MP3 player has an excellent decoding chip can better restore the quality of the audio signal, to a large extent make up for the loss of the audio signal. On the contrary, the low-end decoding chip will cause further loss of MP3 encoded information.
IN addition, with the development of decoding chips, the updated generation of decoding chips has not only MP3 decoding function, but many extension functions of MP3 such as LINE IN, USB2.0 high-speed transmission interface integrated in the chip, reducing the complexity of MP3 peripheral circuits, while bringing more and more functions to MP3.