science

Steve Mould acustic camera

How Acoustic Cameras Can See Sound

While most photographers are used to capturing what their camera sees, an acoustic camera captures what it hears. Well-known YouTube science personality and educator Steve Mould's newest video explores acoustic cameras and how they can "see sound."

What is a Low-Pass Filter and How Does it Work?

Most digital cameras from the 2000s and 2010s are equipped with an optical element called an optical low-pass filter (OLPF), also known as an anti-aliasing (AA) or blur filter. As the name "filter" suggests, this optical element filters out some information coming from the imaged scene.