## You'll have to read the book to understand them, however, links to online articles are provided to get you started.

- Harmonic amplitudes are proportional to the
*area* of the distortion.
- The
*Harmonic Signature* is the result of the **angle** where the sinusoid impacts the distortion as predicted by the Bullard Harmonic Solution. Harmonics do not just fall off as the frequency increases as is commonly believed.
- Even harmonics don't appear in symmetrical distortion because they cancel each other out.
- When a portion of a sinusoid is removed (such as in clipping), the
*Harmonic Signature* mirrors the harmonic signature of the feature removed from the sinusoid.
- Square waves, triangle waves and all other kinds of waveforms obey these rules and their harmonic behavior can be predicted with simple mathematical formulas.