All the unwanted, extraneous signals in an electronic circuit. It is rated in decibels below a reference point, which is determined by the system being measured. See noise.
"noise floor." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/noise-floor>.
noise floor. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/noise-floor