Filter 2 works in low-pass 12 dB mode only, and can only be used on top of Filter 1. Filter 2 can exaggerate the more subtle filters such as the band-pass and notch, or amplify a high-pass or low-pass filter to cut through almost anything.
To add Filter 2 to the band-pass filter
Set the Filter 1 type to BP.
This setting affects a narrow frequency band that is very pronounced at high resonance.
Turn the Filter 1 resonance to a high setting and set the Freq fader to a good tonal position.
Now click the Filter 2 button (Figure 5.31), making sure that the Link button is not enabled.
Figure 5.31. Add Filter 2 to the notch filter.
Turn the Level (master volume) fader down (to protect your ears), and start your loop playing.
Now move the Filter 2 resonance to a high value, and move Filter 2's Freq fader up and down.
The result is a set, resonant tone from Filter 1 being resonated a second time by Filter 2, for an amplified filter effect.
You can make the two filters move together automatically, using Link mode.
Warning: Set your volume low before boosting resonance on both filters at once! When Filter 2 is at zero offset (all the way down), both filters are set to the same frequencyin this situation, high resonance is very powerful and can blow out headphones, speakers, and ears.
To link Filter 2 to Filter 1
With your loop playing, set Filter 1 to BP and set both Freq and Res to about 64.
Enable Filter 2 with Res at 64 and Freq at 96.
Click Filter 2's Link button.
The Filter 2 Freq fader now acts as an offset of the Filter 1 frequency setting.
Turn Filter 2's Freq all the way down. There is no offset now; Filter 2's frequency matches Filter 1's.
Turn Filter 2's Freq fader up to about 40. Because Filter 1 is in band-pass mode, the higher Filter 2 Freq setting has nothing to work with.
In Link mode, the Filter 1 Freq fader acts as a master fader for both filters. When you move the Filter 1 fader, both filters move, preserving the relative offset value.
Filter 2 is more effective when set to a higher frequency than Filter 1. Why? Because Filter 2 is a low-pass filtersetting it below the Filter 1 frequency can mute what Filter 1 is doing (or, if Filter 1 is in BP or HP mode, can even cut off all sound).
Though the notch filter is subtle by itself, it sounds much different when you add Filter 2.
To add Filter 2 to the notch filter
Play your loop, set Filter 1 to Notch, and push the Res fader to minimum.
Enable Link and Filter 2.
Set Filter 2's frequency offset to zero by moving the Filter 2 Freq fader all the way down.
The harmonic tone you hear is Filter 2 boosting frequencies along the slope of Filter 1's notch. Filter 2 is producing the tone, but Filter 1 is focusing it.
Now try boosting the Filter 1 resonance.
The Filter 1 Res fader suddenly has an audible effect, because the notch "slope"silent beforeis now exaggerating Filter 2's resonant frequency (Figure 5.32).
Figure 5.32. This is how Filter 2 works with Filter 1 in Notch mode.