Convert AAC to M4R
You can convert AAC file to M4R as well as to variety of other formats with free online converter.
How to convert aac to m4r?How to convert m4r to aac?
Convert aac to m4r
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Advanced Audio Coding
A proprietary format with lossy compression, which have been created as an alternative for MP3 with a higher quality of coding. Overtones out of human perception are being removed. AAC is two times less than MP3, which means 1/10 of CD digital data.
The format has being widely used since 1997 as the seventh release of MPEG-2 family. As it is supplied by hardware players, the format is highly demanded by music fans. It has been widely spread in Apple production and is being used by default in iTunes.
The format conception is similar to MP3, but it is more advanced. Being able to execute larger compression, it is represented as a separate segment of MPEG-4 standard which is used for creation of compact audio files. AAC is highly efficient with variable and continuous bitrate, with sampling frequency of 8-96 KHz.
The current version complies with the standard of ISO/IEC 14496-3. Compression is performed on the basis of auditory masking effect that provides with data reduction with no deterioration for sound quality.
Microsoft Windows Media Player
VLC media player
|Developer||Bell Labs, Dolby Laboratories, Sony, Nokia, Coding Technologies|
iPhone Ringtone File
|Description||This format is used in smartphones of the iPhone series. Mainly this format is an AAC and M4A file. Not all audio files of the iTunes store can be converted to M4R. When syncing with an iPhone and a computer, these types of files are automatically moved to the phone. These files can be purchased or downloaded from iTunes. Moreover, audio files of other formats can be converted to M4R format. This format ensures possible best ringtone for iPhone.|
|Technical details||M4R differs from MP3 because of compression. This format is a type of MPEG-4 standard under the ISO-IEC standard 14495-3. Despite auditory masking, a lossy compression of this format is similar to AAC and MP3 files. It helps to shrink the audio by removing the data and audio, which can not be sensed by the human ear. Meaning M4R can produce high-end audio file without acquiring large space. Users can use any of their desired audio as their choice (like ringtone or alert tone).|
Apple QuickTime Player
|Main program||Apple iTunes|