A filter is an electronic device designed to reduce a signal’s energy at a specific frequency. A true filter always acts as a subtractive device, not adding anything to the signal. In many filters, an amplifier is often incorporated into the circuit, allowing the frequency to be boosted or cut (active filter). Filters of different frequencies are often combined to create equalizers.
Sweetwater Sound Inc.
5501 U.S. Hwy 30 W
Fort Wayne, IN 46818
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