"noise," c.1280,
soun, from O.Fr.
son, from L.
sonus "sound," from PIE
*swonos, from base
*swen- "to sound" (cf. Skt.
svanati "it sounds,"
svanah "sound, tone;" L.
sonare "to sound;" O.Ir.
senim "the playing of an instrument;" O.E.
geswin "music, song,"
swinsian "to sing;" O.N.
svanr, O.E.
swan "swan," prop. "the sounding bird"). The final
-d was established c.1350-1550 as part of a tendency to add
-d- after
-n-. The verb is attested from c.1300, from L.
sonare, from
sonus. First record of
sound barrier is from 1939.
Soundtrack is from 1929;
sound check is from 1977;
sound effects is 1909, originally live accompaniments to silent films.
"The experts of Victor ... will ... arrange for the synchronized orchestration and sound effects for this picture, in which airplane battles will have an important part." ["Exhibitor's Herald & Moving Picture World," April 28, 1928]