Multiplication of two Cosine Functions

f(t) = A⋅cos(at + d) ⋅ cos(bt),

A is the amplitude, a the angular frequency of the first, b of the second cosine, d is a phase shift. The cosine was chosen so that a single oscillation can be easily made visible by setting a or b to zero. The dimension of the canvas is handy 15 × 7.5 units2.

Just vary the parameters! Hint: Click on the parameter sliders or the number fields and control the change via your cursor keys. Have fun!

; accepted formats: "red", "#f00", "rgb(255, 0, 0)", "rgba(255, 0, 0, 0.5)"

 (0 ≤ t < 1500)

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