between two front teeth
Bi means two and dental means teeth. The sound is made by squeezing air between the two front teeth. This sound is rarely used in beatboxing.
The following diagram shows where the Bidental (front) Fricative is made in the mouth.
The Bidental (front) Fricative is used in the following sounds:
BZZKTT Version 8.2 • © 2015-2020 Gavin 'Beatbox' Tyte (aka TyTe) • All Rights Reserved
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Special thanks to Alex Tearse, Paul Arnett, Michael Wyatt, Tyler Thompson, Helen Tyte, David 'Goznet' Gosnell, and Jerusalem Productions.