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

what are 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 the latest mp3 version of sound Clarity.

the main defiant 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 a stereo bit rate of 128kbps, 192 kbps or 256kbps. By the way, the Bit rate is the amount of data that is conveyed per unit of time.