Depending on the regional genre, a suling can be tuned into different scales. Sulings can be found in the following regions:
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.
The following picture shows the fingering for a six-holed Sundanese suling.
And below is the example of 'more realistic' view of finger positioning for the pelog degung scale.
The Maguindanaon suling is the smallest bamboo flute of the Maguindanaon and the only one classified as a ring-flute (the other two bamboo flutes of the Maguindanaon, the tumpong and the palendag are both lip-valley flutes). Air is passed through the suling via a blowing hole found at the bottom of the instrument and pitch is controlled via five finger holes on the top and one finger hole located on the bottom. Traditionally only the palendag was commonly played but because of the difficult nature of playing the palendag, both the tumpong and the suling have come to replace the palendag as the Maguindanaon’s most common aerophones.
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