What it does
Sinewave panner built from scratch
Illustrates how to build a stereo sinewave auto-panner by multiplying a mono audio signal by separate "left" and "right" amplitude modulation signals which are then "zipped up" to form a stereo output. The Ramp Control Generator is used to generate a ramp signal which rises from 0 to 2*pi over a user-selectable duration. This ramp signal represents the (wrapped) phase of an oscillator. The Control Sine block calculates the trigonometric sine of the ramp signal. The One plus Control and One minus Control blocks are used to distribute the signals to the "left" and "right" channels respectively. This is only one example of how to distibute the signal between the channels. Other variations on the theme are, of course, entirely possible.
Likewise, the structure can easily be extended to generate multi-channel panners instead of merely stereo (i.e. 2 channels).