Notch is to use a notch filter or very narrow EQ cut to eliminate or attenuate a precise sliver of frequencies.

Notch

Learn what an audio notch filter is and how it precisely cuts narrow frequency bands. This in-depth guide covers notch filter applications like feedback and noise reduction.

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A-weighting is a method of adjusting sound measurements to account for the varying sensitivity of the human ear to different frequencies. It applies a frequency response weighting to sound measurements in order to provide a more accurate representation of the sound as perceived by humans.

A-Weighting

A-weighting is a standard for measuring sound levels that takes into account the frequency response of the human ear. This standard is used in many industries, including environmental noise monitoring, industrial hygiene, and workplace safety, to ensure that sound levels are measured and reported accurately.

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