Mai ka hiʻohiʻona o ka mālama ʻana i ke kaiapuni, ʻo nā "leo makemake ʻole" a pau e pili ana i ka haʻawina maʻamau o ka poʻe, ka hana, a me ka hoʻomaha ʻana i kekahi mau kūlana i kapa ʻia he walaʻau.E like me ka puhi ʻana i nā mīkini, ka ʻōhumu ʻana o nā kaʻa like ʻole, ka walaʻau ʻana o nā kānaka a me nā leo hikiwawe like ʻole, a me nā mea ʻē aʻe.Me ka hoʻomohala ʻana o ka hana ʻoihana, ka lawe ʻana, a me ke kūkulu ʻana i ke kūlanakauhale, a me ka piʻi ʻana o ka nui o ka heluna kanaka, ka piʻi ʻana o nā hale hale (televise, etc.), ua piʻi nui ka walaʻau kaiapuni, a ua lilo ia i mea pōʻino nui o ka lehulehu. hoʻohaumia i ka nohona pili kanaka.Ua ʻike nā haʻawina ʻo ka walaʻau ʻoi aku ma mua o 85 decibels e hōʻeha i ka poʻe, e hauʻoli ka poʻe, a no laila ʻaʻole hiki ke noʻonoʻo i ka hana, e hōʻemi ana i ka maikaʻi o ka hana.

No laila, pono ka poʻe i ka huahana kani nui e hōʻemi i kahi hapa o ka walaʻau a ʻoi aku ka ʻoluʻolu.High sound-absorbing products are mineral fiber ceiling board, fiber glass ceiling board, rock wool ceiling board, etc. Sound-absorbing materials ua mahele nui ia i microporous type a me fiber type.ʻAʻohe ʻokoʻa koʻikoʻi ma waena o lākou.ʻO ke kumu o ka hoʻoheheʻe ʻana i ke kani ʻo ka waiho ʻana i kahi alaloa hiki ke loaʻa ke kani, kahi ala i haku ʻia me nā lua liʻiliʻi he nui i hoʻopili ʻia, a i ʻole ka helu ʻana o nā fibers i hala.Ua hui pū ʻia lākou e hana i nā āpau liʻiliʻi he nui, akā ke komo ke kani, ʻaʻole hiki ke puka i waho.Ma muli o ka ʻinoʻino a lōʻihi o ka pauku, ʻohu ka leo a paʻi i ka hema a me ka ʻākau.Ma ke kaʻina hana, hoʻopau mālie ʻo ia i ka ikehu a loaʻa ka hopena o ka lawe ʻana i ke kani.Hoʻopili ʻia nā kani o nā alapine like ʻole i nā kūlana like ʻole.ʻO nā kani alapine kiʻekiʻe he mau hawewe pōkole a hiki ke maʻalahi, aʻo nā kani haʻahaʻa he mau hawewe lōʻihi a hiki ke komo maʻalahi i nā mea pale.No nā kani haʻahaʻa haʻahaʻa, ʻaʻole paʻakikī wale ka hoʻokaʻawale ʻana i ke kani, akā paʻakikī hoʻi ke komo.ʻAʻole ia e like me ke kani alapine kiʻekiʻe e kuʻi i loko a i waho o nā kahawai liʻiliʻi paʻakikī, akā hiki ke hele a puni.Akā ʻoiai ʻoe e mānoanoa ai i ka mea kani i kekahi pae, hiki iā ʻoe ke hoʻopaʻa i nā alapine haʻahaʻa ma luna o 130Hz.