Duhereye ku kurengera ibidukikije, “amajwi adakenewe” yose agira ingaruka ku myigire isanzwe y’abantu, akazi, no kuruhuka mu bihe bimwe na bimwe byitwa urusaku.Nko gutwika imashini, ifirimbi yimodoka zitandukanye, urusaku rwabantu nijwi ritunguranye, nibindi, byose byitwa urusaku.Hamwe n’iterambere ry’umusaruro w’inganda, ubwikorezi, n’ubwubatsi bw’imijyi, ndetse n’ubwiyongere bw’abaturage, ubwiyongere bw’ibikoresho byo mu ngo (televiziyo, n’ibindi), urusaku rw’ibidukikije rwarushijeho gukomera, kandi rwabaye ikibazo gikomeye ku baturage ko yanduza ibidukikije byabantu.Ubushakashatsi bwerekanye ko urusaku rurenga décibel 85 ruzatuma abantu bumva bababaye, abantu bakumva urusaku, bityo ntibashobora kwibanda ku kazi, bigatuma akazi gakorwa neza.

Kubwibyo, abantu bakeneye ibicuruzwa bikurura amajwi kugirango bagabanye igice cyurusaku kandi bumve bamerewe neza.Ibicuruzwa bikurura amajwi menshi ni ikibaho cya fibre fibre plaque, ikibaho cyo hejuru cya fibre ikirahure, ikibaho cyogosha ubwoya, nibindi. Ibikoresho bikurura amajwi bigabanyijemo ubwoko bwa microporome nubwoko bwa fibre.Nta tandukaniro ryingenzi riri hagati yabo.Ihame ryo kwinjiza amajwi nugusiga umuyoboro ushobora kugera kumajwi, umuyoboro ugizwe nu mwobo muto utabarika uhujwe hamwe, cyangwa fibre zitabarika zambutse.Bivanze hamwe kugirango habeho icyuho gito, ariko ijwi rimaze kwinjira, ntirishobora gusohoka.Kuberako igice kirimo akajagari kandi muremure, ijwi riraturika kandi rimenagura ibumoso n'iburyo.Mubikorwa, bitwara buhoro buhoro imbaraga kandi bigira ingaruka zo kwinjiza amajwi.Amajwi yumurongo utandukanye yakirwa mubihe bitandukanye.Ijwi ryinshi-rifite amajwi maremare kandi arashobora kwakirwa byoroshye, mugihe amajwi make-afite amajwi maremare kandi ashobora kwinjira mu nzitizi.Ku majwi make-yumvikana, ntabwo bigoye guhuza amajwi gusa, ariko kandi biragoye kubyakira.Ntabwo ari nkijwi ryihuta cyane rizajya risohoka mu miyoboro mito yuzuye, ariko bizagenda byoroshye.Ariko mugihe cyose ubyibushye ibintu bikurura amajwi kurwego runaka, urashobora kwinjiza inshuro nke hejuru ya 130Hz.