What do sample rate and bit rate mean in a song?
The process of converting an analog audio signal to a digital audio signal is called sampling.
In a nutshell, it’s how many data points it takes to record a 1 second long sound using waveform sampling.
For example: the sound sample rate of 44.1 KHz is equivalent to spending 44,000 data points to describe the sound waveform for 1 second. In principle, the higher the sample rate, the better the sound quality.
Sampling frequency is generally divided into three levels: 22.05KHz, 44.1KHz and 48KHz; 22.05 KHz can only reach the sound quality of FM radio, 44.1 KHz is the theoretical limit of CD sound quality, and 48 KHz has reached DVD sound quality.
Sampling rate refers to the sampling frequency when converting sound (analog signal) to mp3 (digital signal), i.e. how many data points are sampled per unit of time.
Bit rate refers to the number of bits (bits) transmitted per second. The unit is bps (bit per second). The higher the bitrate, the more data transmitted and the better the sound quality.
Bit rate refers to the number of bits (bits) transmitted per second. The unit is bps (bit per second). The higher the bitrate, the more data is transmitted per second and the clearer the image quality.
Bitrate in sound refers to the amount of binary data per unit of time after converting an analog sound signal to a digital sound signal, which is an indirect measure of audio quality. The principle of bit rate (bitrate) in video is the same as in sound, which refers to the amount of binary data per unit of time after the analog signal is converted to a digital signal.
It can be said that the sample rate and bit rate are like the horizontal and vertical coordinates on the coordinate axis. The sampling frequency on the abscissa represents the data points sampled per second. The bit rate of the ordinate represents the precision when quantizing analog quantities with digital quantities.
