What is the name of Lingling's bell?

Ringtone is a Chinese vocabulary, which traditionally refers to the ringtone of class, but now it is mostly used to refer to the ringtone of mobile phone to remind people that there is a ringtone when a phone calls in.

SMAF is a multimedia data format developed by Yamaha, and MMF ringtone is a file in this format. SMAFdeguige is defined as a format that can play multimedia documents on portable terminals. Compared with similar SMF (standard MIDI document), SMAF document has the advantages of small volume and strong expressive force. SMAF is mainly used to make mobile phone ringtones. However, as an extended specification of SMAF, it can also be used to display text and graphics. In this way, SMAF provides a space with strong expressiveness and feasibility when making multimedia tracks on the mobile phone terminal.