The rate at which a digital channel transmits digital signals is called the data transmission rate or bit rate.

The word bit rate has many translations, such as code rate, etc., which means that it has been encoded (compressed) The final audio data needs to be represented by how many bits per second, and a bit is the smallest unit in binary, either 0 or 1. Simply put, the relationship between bit rate and audio and video compression means that the higher the bit rate, the better the quality of the high-pitched video, but the larger the encoded file will be; if the bit rate is lower, the situation will be reversed.