The tabla are a pair of hollow drums originating from India. The Bass drum is called the Bayya or Dugga. It is made out of a metal (usually copper) shell, leather head (puddi) and leather straps (vaadi).

The leather head has an inner circle (black in colour) called the syahi.The syahi is made out of iron fillings powder and rice paste. The straps are tightened to cause tension to the head therefore producing a higher pitch on the drum. Obviously slackening the straps will cause the drum to lower in pitch.

The Treble drum is called the Dahina or Tabla. It is made out of wood. The skin and straps are of the same material as the Bayya.

                         * Bayya   means left  in the Hindi Language and Indian dialects                               

       * Dahina means right in the Hindi Language

 Source- Udit Pankhania