DSP for Artists

Sound can be described as a signal that changes over time. A sine wave is a useful place to begin: a smooth, repeating oscillation with just one frequency.

Frequency and amplitude

Frequency is the number of cycles per second, measured in hertz (Hz). Amplitude describes the size of the oscillation. In this example, the vertical axis is normalized from −1 to 1, and the horizontal axis shows one second.

Move the sliders to see how these two properties change the wave.