The Notch effect removes frequencies that are near the specified center. This effects is available for 5.1, stereo, or mono clips.

Center

Specifies the frequency to be removed. If you are removing power‑line hum, type a value that matches the power‑line frequency used by the electrical system where the clip was recorded. For example, in North America and Japan type 60 Hz, and in most other countries type 50 Hz.

Q

Specifies the range of frequencies to be affected. A low setting creates a narrow band; a high setting creates a wide band.