Tracking a sine wave with noise

1. Does sound travel in sine waves?
2. What is a sound sine wave?
3. Does a sine tone have harmonics?

Does sound travel in sine waves?

The sine wave or sinusoid or sinusoidal signal is probably the most commonly used graphic representation of sound waves.

What is a sound sine wave?

The waveform of a pure sinusoidal tone which has a waveform defined by a mathematical function derived from a classic periodic oscillation, such as the movement of the tip of swinging pendulum. In a musical context, a sine wave contains only a single fundamental frequency, and no harmonics.

Does a sine tone have harmonics?

The sine waveform is unique in that it doesn't have any additional harmonics; it is the fundamental waveform.