downsampling

This term is primarily used in technical contexts such as digital signal processing, audio engineering, and computer graphics. It describes a deliberate reduction in data density, which often involves a trade-off between file size and fidelity. While it is a standard technical procedure, it can lead to aliasing or loss of detail if not performed with appropriate filtering.

As a noun, the word refers to the general process or a specific instance of the action. When used as a verb, it describes the active application of this process to a specific piece of media. It is the direct antonym of upsampling.