Convert CDDA to M4R
Convert your CDDA files to M4R online
CD Digital Audio File
A standardized format intended for compact discs. It features an amplitude resolution of 16 bits and a sampling frequency of 44100 Hz. This format emerged back in 1980. It is utilized for storing data on personal computers and CDs. A CS Digital Audio File stores the audio data in the AIFF format. You can see such files if you extract the audio files from a compact disc. This operation can be performed using Apple iTunes.
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.