What is the audio format or bit rate of mpeg-layer3?

MPEG Layer III, commonly known as MP3, is a digital audio format that uses lossy compression to reduce file size while maintaining sound quality. The bit rate for MP3 files can vary, typically ranging from 32 kbps to 320 kbps, with higher bit rates generally providing better audio quality. MP3 is widely used for music and audio streaming due to its balance of compression efficiency and fidelity.