What is a high-fidelity player

• Speaking of high-fidelity players, people in the industry will think of CD players

• The basic principle of the CD player is based on the Nyquist sampling theorem. The sound that the human ear can hear is 20Hz-20KHz, so the sampling rate of 44.1KHz can reproduce the frequency signal within 20KHz. In recent years, CD players 'S rapid development has also verified the position of digital audio in the audio field

• The so-called high-fidelity player is to faithfully reproduce the recorded sound field within the audible audio range of the human ear. Generally speaking, the music reproduced by the CD player has a distortion of <0.01%, and the signal-to-noise ratio and dynamic range are both > 100dB, which is high-fidelity music. Compared with the original analogue disc or tape, the signal-to-noise ratio is <60dB, which is at least 100 times higher.