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M4A - Wikipedia
https://en.wikipedia.org/wiki/M4A
M4A may refer to: .m4a, an MPEG 4 filename extension for audio. Medicare For All, common designation of single-payer healthcare proposals in the U.S. Topics referred to by the same term. This disambiguation page lists articles associated with the same title formed as a …
Audio file format - Wikipedia
https://en.wikipedia.org/wiki/Audio_file_format
Audio within the m4a file is typically encoded with AAC, although lossless ALAC may also be used. .m4b: An Audiobook / podcast extension with AAC or ALAC encoded audio in an MPEG-4 container. Both M4A and M4B formats can contain metadata including chapter markers, images, and hyperlinks, but M4B allows "bookmarks" (remembering the last ...
Advanced Audio Coding - Wikipedia
https://en.wikipedia.org/wiki/Advanced_Audio_Coding
Advanced Audio Coding is designed to be the successor of the MPEG-1 Audio Layer 3, known as MP3 format, which was specified by ISO / IEC in 11172-3 ( MPEG-1 Audio) and 13818-3 ( MPEG-2 Audio). Blind tests in the late 1990s showed that AAC demonstrated greater sound quality and transparency than MP3 for files coded at the same bit rate.
What Is M4A? How to Open It & How to Convert It?
https://www.minitool.com/lib/m4a.html
What is M4A file? M4A is the file extension of audio files encoded using Advanced Audio Coding (AAC), which is a lossy compression. M4A is usually the successor to MP3. MP3 was originally not only used for audio design but was the third layer of MPEG 1 or 2 video files. M4A stands for MPEG 4 audio.
Audio Formats and Codecs Supported by HEOS
https://support.denon.com/app/answers/detail/a_id/1942/~/audio-formats-and-codecs-supported-by-heos
M4A audio is often compressed using AAC lossy encoding, but can also be in Apple Lossless format. MP4 is a protected format which employs DRM technology to restrict copying. *Wikipedia. AAC (Advanced Audio Coding) is a standardized lossy compression and encoding scheme for digital audio. Designed to be the successor of the MP3 format, AAC ...
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