Traditional Mauritian sega - sega tipik - is nowadays played mainly with the ravann, triyang, maravann. The clave is often played by hitting on an empty glass bottle.
The ravann is a frame drum similar to a daf or tar.
Mauritian sega uses an african clave and variation :
The triyang adds and contrasting rhythm to the clave and helps getting the polyrhythm feel.
In a typical sega tipik session, their will be about 4 musicians playing ravann, each with different ravann sizes providing low and high tones. The staff below is a quick representation of how basic ravann rhythm is played in sega tipik. Following frame drums notation may be easier to understand how to properly play the Ravann