What does changing the frequency and amplitude of a sine wave do? Let us first explore what a sine wave is to figure this out. The most basic sine wave in math is:
y = sin(x)To change the amplitude of a sine wave or increase the distance between the Sinusoidal axis and the maximum/minimum point of the wave, you can multiply the sine function by the desired amount, as shown below.
y = 2 sin(x)To change the frequency of a sine wave, or the distance between each lobe of the wave, you can multiply the input value by a given number.
y = sin(2x)You can experiment below with the amplitude and frequency to see what it would look like with a different setting. The graph's x-axis is locked so you can see how your sine wave compares to the base sine wave. Hopefully, this will help you understand how amplitude and frequency change a sine wave.