verb: if something made of metal clangs, or if you clang it, it makes a loud sound
noun: a loud resonant repeating noise ("He could hear the clang of distant bells")
verb: make a loud noise

Music
1) Timbre. Quality of tone.
2) The peculiar "ringing" noise or din produced by the clash of metals, or the blast of loud wind instruments.

CLANG: Tones sounded together not necessarily harmoniously. [See pages 145-147 of Tyndall, John; Sound; Longmans, Green, and Co., London, 1893]

See Also

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Beat
Chord
Difference Tone
Figure 8.6 - Difference Tones
Great Pyramid
Power of Beat Harmonics