When the 频率 of an 泛音 is 不 an 整数 多 of the 基（础） the 泛音 is said to be 非和谐 and is called a 分音 its 波形 is 非周期

乐器 of the 打击乐 group bells and gongs in 特殊 have 泛音 which are largely 非和谐 As a result such 声 may have indefinite or 多 音高 联合 with them 源 Barry Truax - Handbook for Acoustic 生态学 CD-ROM Edition Cambridge Street 出版 1999 - CSR-CDR 9901