Depending on the regional genre, a suling can be tuned into different scales. Sulings can be found in the following regions:
Sulings are made mainly of “tamiang” bamboo (Schizostachyum blumei, Nees), a long, thin-walled bamboo tube. The mouthpiece of the suling is circled with a thin band made of rattan near a small hole. There are two factors that affect a fine suling’s tone:
- Fingering position.
- Speed of the airflow blown by the mouth.
The fingering position changes the wavelength of sound resonance inside the suling’s body. Depending on the distance of nearest hole to the suling’s head, different notes can be produced. The airflow speed also can modify the tone’s frequency. A note with twice frequency can be produced mostly by blowing the air into suling’s head’s hole with twice speed.