Yes, sound intensity changes with distance from the source. The relationship between sound intensity and distance is described by the inverse square law, which states that the sound intensity is inversely proportional to the square of the distance from the source. This means that as the distance from the sound source increases, the intensity decreases rapidly.

The inverse square law can be expressed mathematically as follows:

```

I = P / (4πr^2)

```

where:

* I is the sound intensity in watts per square meter (W/m²)

* P is the power output of the sound source in watts (W)

* r is the distance from the sound source in meters (m)

This equation shows that the sound intensity is proportional to the power output of the sound source and inversely proportional to the square of the distance from the source. In other words, the sound intensity decreases as the distance from the source increases, and it decreases more rapidly as the distance increases.

The inverse square law has important implications for sound propagation and for our perception of sound. For example, it explains why the sound from a distant source is quieter than the sound from a nearby source, and it explains why sound waves can be focused or reflected by objects in their path.