Clapperboard: nkọwa ngwá ọrụ, mejupụtara, ojiji

Khlopushka (ihe otiti) bụ ngwa egwu egwu ndị Russia nke ezinụlọ nke idiophones, nke nwere planks abụọ ejikọrọ na ibe ha.

Otu n'ime mbadamba ahụ nwere aka, na nke abụọ na-agbanye na nke mbụ site n'enyemaka nke mmiri mmiri, a na-ejikọta ha na isi na eriri polymeric siri ike. Onye na-egwu egwu na-ejide aka ahụ n'otu aka wee wedata ya na obere mmegharị. N'oge a, bọọdụ ahụ, nke nwere ike ibugharị, na-adaba onye ọzọ, na cracker na-eme ka ụda na-ada ụda na-ada ụda, nke dị ka ịkụ ụtarị ma ọ bụ égbè si na égbè.

Ụrị ahụ adịghị ala karịa ngwa egwu ndị ọzọ dị na egwu egwu, dị ka rattles. A na-eji ya na egwu egwu egwu egwu kemgbe narị afọ nke 19 idowe ụda olu iji mee ka arụmọrụ ahụ pụta ìhè.

Ojiji mbụ nke bọọdụ clapper dị na opera The Postman si Longjumeau (1836) nke Adolphe Adam dere. A pụkwara ịnụ ụda ngwá ọrụ na Maurice Ravel's First Piano Orchestra na Gustav Mahler's Symphony No. 7. Ndị bi n'Ebe Ọwụwa Anyanwụ Europe ka na-eji ya eme ihe n'ọrụ ha.

A na-eme osimiri site na maple, oak ma ọ bụ beech. Ọtụtụ mgbe, a na-ese cracker na Khhokhloma ma ọ bụ Gorodets na-ese site n'aka ndị ọkachamara.