Pink noise: what is it? Easily explained

Pink noise is a technical term. Most of the time, only die-hard hi-fi friends know what exactly is behind it. We'll explain what pink noise is all about.

Pink noise - what is it?

Pink noise is also called 1 / f noise.

• The pink noise is a noise that becomes quieter as the frequency increases. More precisely, the pink noise decreases by three decibels per octave.
• The pink noise is also called 1 / f noise because it falls inversely proportional to the frequency - ie "f" - that is, it becomes quieter.
• The average person feels pink noise as a sound, not a single tone. Pink noise plays a role, for example, when assessing loudspeakers.
• In addition to pink noise, there are other types of noise: White noise, for example, whose sound does not become quieter, but also not louder when the frequency changes.
• The blue noise in turn gets louder by 3 decibels per octave. There is also brown / red noise and violet and black noise.

We will show you how to correctly set a power amplifier in the next practical tip.