Using dedicated audio editing programs like the Awave Studio or even some ringtone maker it should be possible to process common audio files (like the .m4a) and export it to some ringtone formats including RTTTL Nokring ringtones (.rtttl).
Convert MPEG-4 compressed audio to RTTTL / Nokring mobile ring-tone format.
We found one software available in the database for this conversion.
Microsoft Windows software - convert m4a to rtttl on Windows
Audio editting software with huge format support
Convert from m4a file format
|Yes, Awave Studio supports m4a file conversion as a source file type.||Yes||Yes||m4a editor||Yes||No||No||No|
|Yes, Awave Studio supports rtttl file conversion as a target file type.||No||No||No||No||No||No||No|
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.