Convert MMF to M4R
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| File extension | .m4r |
|---|---|
| File category | Audio |
| Stands for | MPEG-4 PART 14 for iPhone ringtones |
| Developer | Apple Inc. |
| Overview | M4R is one of the extensions of MPEG-4 Part-14 and it is specially designed by Apple for iPhone ringtones. It is just the relabelling of AAC and M4A. This extension provides an excellent quality of ringtones for iPhones and the size of the ringtone is also small. There are certain steps that one needs to follow for the conversion of any song into this format (iPhone ringtone). Firstly, select any song of 30 seconds and covert it to AAC format using iTunes. Then rename this file using .m4r extension. Finally, by using the iTunes transfer your ringtone file to iPhone. This can be done by connecting your iPhone to the computer and syncing the playlist. Now a user can easily use this ringtone for phone ring, alerts, alarms etc. It should be noted that these files will be supported only by the latest version. Hence, use the current version of iTunes. |
| Technical description | It uses a lossy compression algorithm to encode the ringtones that is same as AAC and MP3 eareensions. But it has the additional feature of auditory masking which means it neglects other sounds which can be detected or recognized while listening or hearing another sound. It only discards the information which is surplus for the human ear. This results in good quality of iPhone ringtones. It takes less storage space without affecting the quality of audio. It is also a segment of MPEG-4 standard and this is stated in the ISO-IEC standard 14495-3. |
| Links | wikipedia.org (opens in new tab - official documentation) |
| File extension | .mmf |
|---|---|
| File category | Audio |
| Stands for | Mobile Music File |
| Developer | Yamaha |
| Overview | It is an extension for music files which are generally used to store Mobile Ringtones. It was specially developed by Yamaha, so that cell phones can have distinctive ringtones. It is the extension of SMAF(Synthetic Music Mobile format application)which is an audio file format. With the certain changes in file format now it is possible to store graphics and text in it. This format is supported by all the portable devices and it is used for multimedia in it. These files are also capable of storing instrument data which is similar to module files( Files that can represent music). Due to this aforesaid feature, the user can develop its own instrument which can be played on devices with the same sound effect and similar chip. |
| Technical description | Yamaha’s SMAF tools can be used to create MMF files from WAV and MID file extensions. These files can have both graphics and PCM sound playback which make it distinct from MIDI. One must not get confused with SMAF and MMF. These are not similar terms. SMAF is the name of the file whereas MMF is an extension of aforesaid file format. The size of the this file is comparably smaller than the other identical files that have a common function, similar to it. These files have a great reputation in the mobile world as they can create affluent images and in addition to it, the size of the file is also small which can be easily managed or maintained. |
| Links | wikipedia.org (opens in new tab - official documentation) |
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