Sine Controller

The 'sine controller can be created using the following Lisp syntax:

The 'sine controller takes two arguments:

• dimension: number of dimensions of the output controller.
• freq_controller: controller defining the frequency of the sine wave.
• phase: initial phase of the sine wave (in degrees).

The frequency controller determines frequency (or frequencies) of the output sine-wave(s). The dimension of this controller must equal the dimension of the sine-wave controller whose frequency it determines.

The initial phase parameter should be given, even if it is zero. Naturally, a cosine may be made by providing an initial phase of 90 degrees. Currently the phase parameter seems to only apply to the first dimension of the controller. This is a bug.

The sine controller is updated every synthesis sample period.

A basic sine controller (at 440 Hz, for example) may be created like this:

Although one-dimensional sine controllers are most often used, they may have multiple dimensions such as in this example (whose graph is shown, above, for one second of time):

Sine wave controllers are often useful to add modulation to other Modalys controllers. For example, if one wanted to add vibrato to the pitch of a plucked or bowed string synthesis, one could slightly vary the position of the access on the string where a finger makes contact with it using a sine controller.

Sine controllers can also be used to make synthesis, that can be used to resonate objects, as shown in Example 5.

There are no special options for this controller.