John Swenson compares digital to looking at electrical voltage. There can be many different voltage levels on a wire. This is analog. What digital does is quantifies those values and establishes thresholds. Digital then uses those thresholds to block out low-quality noise. Digital is not without its downsides, such as limiting a wire to only two values. John Swenson has been working with audio technology since he was five years old.
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What is digital? Find out answer.
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?
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