Text: Summation tones are negative or Enharmonic while Difference tones are positive and the Dominant. The negative half of a chord. Summation tones occur simultaneously with Difference Tones but are lower in power and have a "negative" connotation, or discordant quality.

See Also: LAW of SUPERPOSITION, DIFFERENCE TONES, BEATS, LAW OF THE TRIANGLE (DALTON), HARMONIES OF TONES & COLORS, OVERTONES see especially RESULTANT TONES; ACOUSTICS §19

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