英语词源字典 - 在线词源网站

oom-pah [oom-pah 词源字典]: 1877, imitative of bass brass instruments.[oom-pah etymology, oom-pah origin, 英语词源]
wah-wah: 1926, in jazz slang, in reference to the effect on brass instruments made by manipulating the mute; of imitative origin. Later also in reference to an electric guitar effect. As an imitation of the sound of a baby crying, it is recorded from 1938. Wah-wah pedal is recorded from 1969. Compare Chinook jargon wawa "talk, speak, call, ask, sermon, language;" Cree (Algonquian) wehwew "goose," Lenape (Algonquian) wava "snow goose," all probably of imitative origin.
saxhorn: "A member of a family of brass instruments with valves and a funnel-shaped mouthpiece, used mainly in military and brass bands", From the name of Charles J. Sax (1791–1865) and his son Antoine-Joseph ‘Adolphe’ Sax (1814–94), Belgian instrument-makers, + horn.