Simple sound (Tone)

Professional Definition
> Simple sound, tone – a sound whose variation in time at a given point in the medium is described by a sinusoidal function.

In mathematical and physical terms, a simple sound is a harmonic oscillation at one, strictly defined frequency. It can be described by the equation: p(t) = A · sin(ωt + φ).

## Acoustics in Simple Words
A simple sound is like one pure primary color. The closest audible example is the signal from a tuning fork or audio generator.

## Summary
A simple sound is a signal at one frequency, represented by a sine wave graph.