Convert M4A to AU
M4A to AU Conversion Software converts M4A files
to AU quickly and easily. The converter supports common codecs for AU
file including PCM 32-bit, ITU-T G.723 3-bit ADPCM, CCITT mu-Law (8-bit), ITU-T G.723 5-bit ADPCM, PCM 32-bit Float, PCM 8-bit, ITU-T G.721 4-bit ADPCM, PCM 24-bit, and so on.
M4A to AU Conversion Software is very easy to use
and supports batch conversion. It is full compatible with both 32-bit
and 64-bit editions Windows 10/8/7/Vista/XP/2000.
What is M4A?
M4A stands for MPEG 4 Audio. Since MPEG-4 Part 14 is a container format, MPEG-4
files may contain any number of audio, video, and even subtitle streams, making
it impossible to determine the type of streams in an MPEG-4 file based on its
filename extension alone. In response, Apple Inc. started using and popularizing
the .m4a file extension. Software capable of audio/video playback should recognize
files with either .m4a or .mp4 file extensions, as would be expected, as there
are no file format differences between the two. Most software capable of creating
MPEG-4 audio will allow the user to choose the filename extension of the created
Because of its exceptional performance and quality, Advanced Audio Coding (AAC)
is at the core of the MPEG-4, 3GPP and 3GPP2 specifications and is the audio codec
of choice for Internet, wireless and digital broadcast arenas. AAC provides audio
encoding that compresses much more efficiently than older formats, such as MP3,
yet delivers quality rivaling that of uncompressed CD audio.
What is AU?
The Au file format is a simple audio file format introduced by Sun Microsystems.
The format was common on NeXT systems and on early web pages. Originally it was
headerless, being simply 8-bit u-law encoded data at an 8000 Hz sample rate. Hardware
from other vendors often used sample rates as high as 8192 Hz, often integer factors
of video clock signals. Newer files have a header that consists of six 32-bit
words, an optional information chunk and then the data (in big endian format).
Although the format now supports many audio encoding formats, it remains associated
with the u-law logarithmic encoding. This encoding was native to the SPARCstation
1 hardware, where SunOS exposed the encoding to apps through the /dev/audio interface.
This encoding and interface became a de facto standard for Unix sound.
- Free Download
M4A to AU Conversion Software
- Install the software by instructions
- Launch M4A to AU Conversion Software
- Choose M4A Files
Click "Add Files" to choose M4A files and then add them
to conversion list.
Choose one or more M4A files you want to convert and then click Open.
- Choose "to AU"
- Convert M4A to AU
Click on "Convert" to convert M4A files to AU format; alternatively,
click on "Convert to One" to convert all files in list and
combine to a single one AU file.
The software is converting M4A files to AU format.
- Play and Browse AU File
When conversion completes, you could right-click on converted file and choose
"Play Destination" to play the AU file; or choose "Browse
Destination Folder" to open Windows Explorer to browse the outputted AU
M4A to AU Conversion Software is 100% clean and safe to install.
It's certified by major download sites.
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