Motivation for M4A Format - What is Wrong with MP3?
Mpeg 3 audio (better known as MP3) is a lossy audio compression format, succeeded by M4A (higher quality with lower bit rates and file size). The bit rate is the number of bits conveyed per unit time, and is (generally) measured in bits per second (generally higher bit rates allow for higher quality).
If WAV has higher quality, why not use it?
WAV files (pronouned WAVE) have high quality but no compression, so this format is not widely used for music collections. It was developed by Microsoft and IBM in 1991.
Alternative File Extensions for M4A
.MP4 is sometimes used as an alternative file extension to .M4A.
Advanced Audio Coding (AAC)
Audio standard for lossy digital audio compression.
Mpeg 3 audio (better known as MP3) is a lossy audio compression format, succeeded by M4A (higher quality with lower bit rates and file size). The bit rate is the number of bits conveyed per unit time, and is (generally) measured in bits per second (generally higher bit rates allow for higher quality).
If WAV has higher quality, why not use it?
WAV files (pronouned WAVE) have high quality but no compression, so this format is not widely used for music collections. It was developed by Microsoft and IBM in 1991.
Alternative File Extensions for M4A
.MP4 is sometimes used as an alternative file extension to .M4A.
Advanced Audio Coding (AAC)
Audio standard for lossy digital audio compression.
