This tone may be within dissonance range of one of the primaries.
The sound is jarring and harsh, and we term it a " dissonance " or " discord."
Yet, despite the recent harmony, there is much that could create dissonance.
The frequency of beats giving maximum dissonance rises as we rise higher in the musical scale, and falls as we descend.
If all tones were pure, dissonance at this part of the scale would not occur if the interval were more than a third.
