Hoʻohana ʻia ka moena hale kaʻa hale kaʻa, ka moena hoʻopaʻa leo, ka moena acoustic no ke kani a me ka haʻalulu.Hāʻawi nā lau hoʻoheheʻe leo i nā mea leo leo kiʻekiʻe, ʻaʻohe mea pōʻino, ʻaʻohe mea ʻawaʻawa a kū i ka wai a me nā aila mineral.ʻO nā noi maʻamau e pili ana i nā ducts ventilation, hoppers, nā kiaʻi mīkini, nā waʻa, nā kaʻa kaʻa, nā mea hoʻoheheʻe ea a me nā paʻa generator.Hiki iā lākou ke hoʻohana nui ʻia ma ka papa haʻuki a me ka papahele lumi keiki i mea e hōʻemi ai i ka walaʻau a hāʻawi i kahi palekana no nā keiki liʻiliʻi.