The alteration of sound frequencies for a specific purpose, such as to remove 'noise' frequencies or to improve speech clarity.
The process of balancing the frequency of a sound. This could involve raising the treble and lowering the bass, for example.
• Process of altering the frequency response of a video amplifier to compensate for high-frequency losses in coaxial cable.
• In audio, to improve the sound quality by increasing or decreasing the gain of the signal at various frequencies.

Audio and video glossary. 2014.

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