yell, ekiga

Yelling system (ekiga) of the Ewondo-speaking people of Cameroon, mentioned by Guillemin (1948). The system is a "langage des tons sans les mots [tonal language without words]"; at long distances, a high-pitched voice is used to hail others by name or transmit messages using ekiga.

Guillemin, L. (1948). 29. LE TAMBOUR D’APPEL DES EWONDO. In T. A. Sebeok & J. Umiker-Sebeok (Eds.), Speech Surrogates: Drum and Whistle Systems. 1976. (pp. 574–590). De Gruyter Mouton. https://www.degruyter.com/view/book/9783110804416/10.1515/9783110804416.574.xml