Equalizers and filters are among the oldest signal-processing devices in recording. The technology goes back to early telephony in the 1800s, when equalizers were used to make the output of a transmission system “equal” to its input. The term has remained in recording and broadcasting as a description of any device which alters the frequency response of a transmission channel in any way.
KeywordsNotch Filter Relative Delay Prefer Frequency Parametric Equalizer Bandwidth Control
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