basics of equalization • chapter 3
HPF
The H P F button turns Band 1 into a highpass filter. This button disables the GAIN and Q knobs for Band 1. When this function is on, all audio below the Band 1 Frequency setting will be filtered out at a slope of 12dB per octave.
Think of this function as a severe bass rolloff. It is useful for getting rid of
LPF
The LPF button turns Band 5 into a lowpass filter. This button disables the GAIN and Q knobs for Band 5. When this function is on, all audio above the Band 5 Frequency setting will be filtered out at a slope of 12dB per octave.
Think of this function as a severe treble rolloff. It is useful for getting rid of tape hiss, TV or computer monitor whine, and other high- frequency noises.
+12dB
+9dB
+6dB
+3dB
0dB
Gain
Frequency
40Hz | 200Hz | 1kHz | 10kHz 20kHz |
30 |
