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Notch Filter effect

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  7. Applying effects
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    2. Effects controls
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    4. Applying effects in the Multitrack Editor
    5. Adding third party plugins
    6. Notch Filter effect
    7. Fade and Gain Envelope effects (Waveform Editor only)
    8. Manual Pitch Correction effect (Waveform Editor only)
    9. Graphic Phase Shifter effect
    10. Doppler Shifter effect (Waveform Editor only)
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The Filter and EQ > Notch Filter effect removes up to six user‑defined frequency bands. Use this effect to remove very narrow frequency bands, such as a 60 Hz hum, while leaving all surrounding frequencies untouched.

Note:

To remove shrill “ess” sounds, use the Sibilance Softener preset. Or use DTMF presets to remove standard tones for analog telephone systems.

Frequency

Specifies the center frequency for each notch.

Gain

Specifies the amplitude for each notch.

Notch width

Determines frequency range for all notches. The three options range from Narrow for a second order filter, which removes some adjacent frequencies, to Super Narrow for a sixth order filter, which is very specific.

Note:

Generally, use no more than 30 dB of attenuation for a Narrow setting, 60 dB for Very Narrow, and 90 dB for Super Narrow. Greater attenuation can remove a wide range of neighboring frequencies.

Ultra-Quiet

Virtually eliminates noise and artifacts, but requires more processing. This option is audible only on high-end headphones and monitoring systems.

Fix Attenuations To

Determines if notches have equal or individual attenuation levels.

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