tags: mus-407 ece-402 audio signal-processing dsp
Noise
In [audio signal] processing, noise refers to a a [sound] with a broadband [spectrum] of [frequencies].
- on its own, sounds like a hiss (usually high frequency but can be low as well)
- considered [inharmonic]
- present in many sounds, especially acoustic and recorded sounds
- excessive amounts are usually considered unwanted in unnatural recordings or audio
- used as a base for [subtractive synthesis] due to spectral richness
- also refers to random or non-useful spectral information within [spectral analysis]