In Audio Systems
Power line hum can be alleviated using a band-stop filter.
Read more about this topic: Mains Hum
Famous quotes containing the word systems:
“Before anything else, we need a new age of Enlightenment. Our present political systems must relinquish their claims on truth, justice and freedom and have to replace them with the search for truth, justice, freedom and reason.”
—Friedrich Dürrenmatt (1921–1990)
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