Stimulate

Stimulate is a harmonic exciter plugin. Use it to brighten up your signal. Add in odd or even harmonics, or even both. Then, use the "amount" knob to drive the harmonic distortion harder. The "range" knob shows you which frequencies are being excited, so everything above the frequency selected. The middle graph shows you what is happening to your signal as if it were a sine wave, so that you can see the even vs odd harmonics in the signal.