That is, the sampling frequency refers to the number of times of sound samples per second. The higher the sampling frequency, the better the quality of the sound. The resolution of the human ear is very limited, so too high frequency does not distinguish it. Sampling frequency is generally divided into 22.05kHz, 44.1kHz, 48kHz three levels, 22.05 can only reach the sound quality of FM broadcast, 44.1KHz Is CD sound quality, 48kHz is DVD AUDIO or professional field will be adopted.
