Any prodigious 声音 or 噪音 which is 免除 from 社会 禁止 Originally such 自然 现象 as 雷 火山 喷发 风暴 and so on were regarded as 宗教 噪音 as they were believed to represent 神圣 战斗 or 神圣 displeasure with 人类

By 比喻 the 表达 may be extended to 社会 噪音 which during certain 周期（时期） of 历史 have 逃离 the attention of 噪音 减少 立法者 e g church bells 工业 噪音 moozak 扩音（放大） pop 音乐 etc

源 Barry Truax - Handbook for Acoustic 生态学 CD-ROM Edition Cambridge Street 出版 1999 - CSR-CDR 9901