复议室内稳态声场公式  

The formula of sound field in a room, re-examination

作　　者：马大猷[1] 

机构地区：[1]中国科学院声学研究所,北京100080

出　　处：《声学学报》2002年第5期385-388,共4页Acta Acustica

摘　　要：对室内稳态声场问题进行了复议。证明摩尔斯简正波公式不是室内声场的严格解,推导方法有误。严格理论应该既包含波动方程的自由空间解（直达声）也包含驻波解（混响声场）,后者由所有反射波组成室内可容许的波型（简正波解）。The theory of sound field in a room is re-examined. It is found that the normal-mode expression of Morse is not the exact, at least not complete solution of the wave equation in the room, its derivation is incorrect. The exact theory calls for both the free space solution (direct sound field) and the standing wave solution (reverberant sound field) in the room, the latter is formed by all the reflected waves to result the allowed modes of vibration (normal modes) in the room.

关 键 词：室内稳态声场公式 声场计算 波动方程 自由空间解 驻波解 像声源 

分 类 号：TU112[建筑科学—建筑理论]