北京隔音窗公司青戎隔音窗詳解噪音降至40分貝左右是什么概念：
     合理家曾在線測量過，人耳之前能聽聞的(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)是(shi)(shi)(shi)0至(zhi)10系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)dB，石英(ying)表聲、落(luo)葉樹的(de)(de)(de)滋滋聲是(shi)(shi)(shi)20系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)dB，二人的(de)(de)(de)輕輕地耳語(yu)是(shi)(shi)(shi)30系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)dB，基本上住房里的(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)是(shi)(shi)(shi)45系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)dB，服(fu)務性貨(huo)車的(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)、喧囂的(de)(de)(de)城市中心區的(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)是(shi)(shi)(shi)80至(zhi)90系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)dB，而紡紗(sha)生產車間不大于(yu)100系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)dB，噴氣式坐飛機的(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)獨(du)角獸(shou)高達120至(zhi)140系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)dB。醫(yi)學(xue)專(zhuan)業上我認為(wei)多于(yu)60系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)dB的(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)是(shi)(shi)(shi)噪(zao)(zao)(zao)(zao)(zao)音(yin)(yin)(yin)(yin)(yin)(yin)(yin)分貝(bei)。