History of Digital Audio Part 2
Different formats use different methods of audio compression, but bit rate still plays a role as a measure of audio quality. The sample rate also plays an important role and the number of hertz shows how many parts per second the file is divided into. The lower limit of the sample rate for audio files is 44.1 kHz (44100 Hz), if it is lower, it is not sufficient.
VBR vs CBR
Constant Bit Rate (CBR) and Variable Bit Rate (VBR) are two methods of obtaining Bit Rate. Constant bitrate means that you set a certain bitrate for the entire file, and with a variable bitrate, its value changes throughout the entire music file as needed.
CBR is like packing something in a larger box than necessary, and VBR packs in a box that matches the outline of its contents. People often use an overestimated bit rate of 320 kbps, when this is not necessary, often a VBR of 192 kbps is sufficient. By ear, you are unlikely to feel a difference.
DRM
DRM (Digital Rights Management) is the most terrible invention since the nuclear bomb and is best left untouched. Music stores primarily use DRM protection to protect it from illegal copying and use.
DRM files are not compatible with all players and you may forget to transfer files in MSC / UMS mode with them. DRM-protected music is usually in WMA or AAC formats. In short, the use of DRM only creates additional problems for people.
