skin is the vibrating object of tabla
its the stretched membrane like the tabla
When the tabla is hit, it produces sound while bouncing in the hollow part of the tabla.
The membrane of tabla vibrates to produce a sound.
the VIBRATING STRINGS on the sitar
A lyre is a stringed instrument, so the vibrating part is a string originally made from catgut.
the tabla's inner part is made up of a light wooden substance which is tighten with the help of wadi (a sting atachhed to the side of the tabla) and the the shaihas a black colour hole which produces different types of sounds.
the strings and the body
Table is base in the principle of multiple reflection of sound the inner part of the tabla is hollow that allows the maximum area for reflection. When the top is neared the sound travels through the hollow reflects and reaches our ears creating a soothing effect. That's how a tabla works