M4A was developed by Apple with Advanced Audio Coding (AAC) technique and it performs a lossless audio compression.
M4A ໄດ້ພັດທະນາໂດຍ Apple ກັບສຽງແບບພິເສດ Coding (AAC) ເຕັກນິກແລະມັນ performs ການບີບອັດ lossless ສຽງໄດ້.