Answer:
Analog Signal
Step-by-step explanation:
An analog signal is a continuous signal in which both quantities are analogous to time, that is they change with time.
The noise Finley is observing if the electronic noise and distortion which is introduced by communication channel ( media in which sound is travelling).
During the transmission of analog signal, noise is the biggest disadvantage as during this process the unwanted noise results into generation loss ( a irreversible loss ) resulting a degrade into Signal to Noise ratio.