Multiple noise processes determine the noise floor of a system.
The low noise floor and greatly improved audio quality meant much better signal reception for all stations.
Effectively it is the noise floor of the recording medium.
It is common for devices to create more noise than the minimum possible noise floor, however.
Too wide, and the noise floor of the receiver will be too high to acquire a good picture.
Signal processing can take advantage of this phenomenon to reduce the noise floor using two strategies.
Random jitter alters the noise floor of the digital system.
This is the system's noise floor at its input.
Other transmitters react to the rising noise floor by increasing their output.
Beware that noise floors on this band are usually very high in the larger cities.