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  1. Fine Art: The effect of the harmony of color and values in a work, for example, warm or cold tones.
  2. Acoustics:
    1. A tone results in an auditory sensation of pitch.
    2. a. A sine wave of any frequency. Commonly refers to a 1Khz sine wave signal being the standard used to reference levels to (when set at 0dBm). b. The frequency response characteristics of a sound. The sound of something as in the sound of an instrument. Source: Church Audio & Acoustics Glossary