laser record
The sound quality of CD format is a relatively high audio format.
Because the CD track can be said to be almost lossless, its sound is basically loyal to the original sound, so if you are an audio enthusiast, CD is your first choice. It will make you feel the sound of nature? .
MP3 file
MP3 format was born in Germany in 1980s. The so-called MP3 also refers to the audio part of the MPEG standard, that is, the MPEG audio layer.
It should be noted that the compression of MPEG audio files is lossy compression.
MPEG3-3 audio coding has a high compression ratio of10:12:1,while basically keeping the low audio part undistorted, but sacrificing the quality of the high audio part from 12KHz to 16KHz in the sound file in exchange for the file size.
Because MP3 format is damaged.
Will damage brain waves, although the human ear sounds no change, but listening in MP3 format is invalid.
It's just a placebo at best.
So the lossless optical disc format is used.
From /view/ 178954.htm