EDIT Consonant shifter This character shifts the first register to the second register. Its preferred transliteration is treisap, not triisap.

The Khmer language is spoken in two different registers. In the first register, the sounds spoken in a normal (head) voice quality with a pretty high pitch. The second register uses a deeper and breathy kind of voice with a lower pitch.

The character U+17C9 Khmer Sign Muusikatoan does the shift from second to first register.

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