Bit rate is a term we often hear. Digital recording generally uses 16 bits, 20 bits and 24 bits to make music. What is a "bit"? We know that sound is light and loud, and the physical factor affecting light sound is amplitude. As a digital recording, it must also be able to accurately reproduce the light sounds of music, so we must have an accurate description of the amplitude of the waveform. "Bit" is such a unit. 16 bit means that the amplitude of the waveform is divided into 2 16, that is, 65536 levels, which are divided into certain levels according to the photoacoustic of the analog signal. Like the sampling accuracy, the higher the bit rate, the more detailed the light changes of music can be reflected.

Bit rate indicates how many bits are needed per second to represent encoded (compressed) audio and video data. One bit is the smallest unit in the binary system, which can be 0 or 1. The relationship between bit rate and audio-video compression is simply that the higher the bit rate, the better the audio-video quality, but the larger the encoded file; If the bit rate is small, the opposite is true.

Bit rate is used to calculate data transmission, and the unit is bytes per second, that is, the number of bytes transmitted per second.

Byte is the smallest unit of data, for example, a word consists of eight bytes.

In short, the higher the better.