影音(yin)(yin)室的墻(qiang)壁一般多(duo)(duo)是前墻(qiang)硬左右側墻(qiang)吸(xi)音(yin)(yin)后墻(qiang)擴散(san)的原則去裝修(xiu)。聆聽空(kong)(kong)(kong)間(jian)中要(yao)特別注意不要(yao)用薄(bo)板(ban)(ban)來釘(ding)空(kong)(kong)(kong)腔(qiang)墻(qiang)或(huo)分隔空(kong)(kong)(kong)間(jian)，因為(wei)薄(bo)木板(ban)(ban)厚(hou)度多(duo)(duo)在0.5cm～3cm，3cm以上的厚(hou)度很少見，3cm板(ban)(ban)吸(xi)125Hz頻率(lv)相當高，有0.28吸(xi)收率(lv)，頻率(lv)越往上吸(xi)音(yin)(yin)率(lv)就(jiu)(jiu)越下降。板(ban)(ban)子(zi)越薄(bo)時，125Hz的吸(xi)音(yin)(yin)率(lv)就(jiu)(jiu)越低(di)(di)，但250Hz的吸(xi)音(yin)(yin)率(lv)就(jiu)(jiu)越高。家庭裝修(xiu)中，多(duo)(duo)是用2cm板(ban)(ban)來分隔房間(jian)，而且板(ban)(ban)子(zi)后面還有空(kong)(kong)(kong)腔(qiang)，空(kong)(kong)(kong)腔(qiang)會(hui)令吸(xi)音(yin)(yin)率(lv)增(zeng)加，這使得(de)中低(di)(di)頻的量感更少，聲音(yin)(yin)更單薄(bo)。