The sampling rate refers to the number of audio samples per second. The unit is Hertz Hz, that is, the number of times.

The bit rate refers to the audio data traffic included in each sample. The unit is bps

So, the higher the sampling rate, the closer the recorded sound is to the original sound

Under normal circumstances, the sampling rate of the media we are exposed to is 44kHZ, that is, every Seconds contain 44k (number of times, not capacity) audio data. Because this is the sampling rate of CD, in most cases we will not change the sampling rate. Most of the network MP3 and other audios are also converted from CD. So The sampling rates are all 44Khz

But the bit rates are different. Different CDs have different bit rates, and the converted audio files such as mp3 can reduce the bit rate to obtain a smaller size.

Generally speaking, the bit rate of genuine CDs sold on the market is generally between 800Kbps-1200Kbps. (The sound quality of CDs exceeding 1000Kbps can be said to be quite good. Most Japanese CDs are above 1000, and most domestic CDs are above 1000Kbps. 800-900) Of course, you can only choose the bit rate when converting to mp3. A popular song on the Internet is about 4-5MB. The bit rate of mp3 is generally 128Kbps.... The higher the bit rate, the larger the audio file size. , the sound quality is closer to the original sound quality.

Reducing the bit rate will reduce the sound quality, but converting from a low bit rate audio file to a high bit rate audio will not improve the sound quality. But converting from a low bit rate to a high bit rate will not improve the sound quality. The bit rate may solve the problem of low-pitched popping sound played by some CD players

The above is the sampling rate and bit rate of common audio files on CDs and the Internet

In reality On the Internet, human technology is constantly improving. On DVDs, higher sampling rates and bit rates can be achieved. The music sampling rate of many DVDs far exceeds that of CDs. However, these discs are difficult to buy, and only high-end ones are available. Only audio can reflect the effect of high sampling rate audio.