Encyclopedia
Accordion
Sinusoidal component of a complex wave whose frequency is an integer multiple of the fundamental tone [IEC 50 (801)]
Source: "State System for Ensuring Uniformity of Measurements. Hydroacoustic Measurements. Terms and Definitions. GOST R 50.2.037-2004"
(approved by the Decree of the Russian State Standard dated 11.02.2004 No. 55-st)