what is 128kbps,360kbps... ? and what is mp3 & m4a

what is mp3 and m4a? 

128kbps and 360kbps in MP3 ?

• most people are not now to the what is the 128kbp 360kbps 64kbps in Android mp3.

• Let's start to who is mp3 part and faunally what is mp4a .
• the best sound Clary is 360kbps
• and after 128kbps minimum 64kbps available in MP3.
• the mostly Dolby atoms sound are better then all sounds Clarity .
• the term of mp4a is a letest mp3 version of sound Clarity .

the main defrant between mp3 and m4a : .

• M4A is generally regarded as the successor to MP3 but compared with MP3, M4A can compress audio with the same bit rate in smaller file size.
•  M4A format files typically have stereo bit rate of 128kbps, 192 kbps or 256kbps. By the way, Bit rate is the amount of data that is conveyed per unit of time.