Convert M4R to CAF
Convert your M4R files to CAF online
M4R: the ringtone file used in Apple iOS
The M4R format is used in Apples mobile devices, mostly for storing ringtones. You can create an M4R file by converting other formats or downloading it from the official iTunes store. The sound conversion employs a special type of compression, which significantly reduces the file size. The advantages of this format make it ideal for iPhone owners. M4R is one of the constituents of the standardized MPEG-4 format. One of its strong points is that the high sound quality is fully preserved after compression.
Core Audio Format
This audio file container was created by Apples developers. CAF incorporates a huge amount of information: the artists name, the songs duration, the names of the album and track. In terms of size, files of the CAFformat can exceed 4 GB. After its emergence in 2005, Core Audio Format replaced AIFF and WAV. It has a lower compression ratio, so the quality of audio does not suffer as a result of compression. CAF files are often used to create various sound effects.