Windowing functions are used for analysis, and as waveform envelopes, particularly in granular synthesis. Window functions are built in to some opcodes, but others require a function table to generate the window. GEN20 is used for this purpose. The diagram of each window below, is accompanied by the f statement used to generate the it.
Blackman-Harris.
Blackman-Harris Window Function
Rectangle.
Note: Vertical scale is exaggerated in this diagram.Rectangle Window Function