What does MMF mean?

2.MMF: a mainstream ringtone format. It is an extension of the file format supporting SMAF (Synthetic Music Mobile Application Format) multimedia data format standard. This file format (* *. Mmf) is specially designed by Yamaha for mobile phones using its audio chip, and is defined as a multimedia document format that can be played on portable terminals. Compared with similar SMF (standard MIDI document), it has the characteristics of small volume (small data capacity, which can compress files, thus adapting to the shortcomings of weak processing capacity and small storage capacity of mobile phone CPU), strong expressive force and strong multimedia expansion ability. (At present, there are two common formats of mobile phones and chord ringtones: Midi and MMF, among which Nokia phones generally use Midi format, while Samsung phones usually use MMF format). One of the selling points of Korean brand INNO is that the suffix of ringtone file "Live ringtone" is MMF. In fact, MMF is a MIDI file, and the working principle of MMF is essentially similar to MIDI. (Speaking of MMF format, Yamaha chip widely used in mobile phones is the chip with the best ringtone performance at present, and its sound is loud and clear. This chip is used in S55(S57), SL55 and S65 of Siemens 55 series. )

3.MMF= = mycophenolate mofetil