<effect name="Cut Computer Hum">
    <biquad type="notch" fc="28" q="20" gain="-50" />
    <biquad type="notch" fc="91" q="20" gain="-50" />
    <biquad type="notch" fc="120" q="20" gain="-50" />
    <biquad type="lowpass" fc="10000" q="1" gain="-10" />
</effect>
