This is the base used for exponential modulation. If it's zero, exponential modulation is disabled. Otherwise, the modulation's curvature becomes more extreme as the power diverges from one, as shown in the table below. This property supports a huge range of values, so it's usually best to change it by large amounts, e.g. powers of ten.
| Value | Description |
|---|---|
| < 0 | Not allowed. |
| 0 | Linear (disabled). |
| 0 < x < 1 | Starts out curving more steeply and then levels off; the smaller the value, the more extreme the curvature. |
| 1 | Linear. Use zero instead to avoid needless computations. |
| > 1 | Starts out curving more gradually and then gets steeper; the larger the value, the more extreme the curvature. |
Exponential modulation is also affected by Power Type. If the power type is asymmetric, the wave's upper and lower halves are affected differently, in which case a given power and its reciprocal (e.g. 10 and 0.1) produce mirror images of each other. If the power type is symmetric, the wave's upper and lower halves are affected equally, and the wave's vertical symmetry (if any) is preserved. The image below shows how a range of powers affect a sine wave, for both power types. Other waveforms respond similarly.