Noise floor

In audio engineering, noise is any undesired audio in a signal – humming, buzzing, hissing.^{[citation needed]} Every part of an analog signal chain is going to introduce some amount of noise.^{[citation needed]}

The noise floor is the sum of all noise in the signal chain.^{[citation needed]12}

The noise floor may increase if the gain is increased, or if boosts from EQ are applied, or if compression is applied.^{[citation needed]}