Effects Reference

Chapter 11 Convolution Reverb: Space Designer 135
Setting the Filter Mode
The Filter Mode knob switches between four modes. Click the desired LP (lowpass) 6 dB
and 12 dB, BP (bandpass) or HP (highpass) value.
 6 dB (LP): Bright, good general-purpose filter mode. It can be used to retain the top
end of most material, while still providing some filtering.
 12 dB (LP): Useful where you want a warmer sound, without drastic filter effects. It is
handy for smoothing out bright reverbs.
 BP: 6 dB per octave design. Reduces the amount of signal that surrounds the midtones
of the input material, leaving the frequencies around the cutoff frequency intact.
 HP: 12 dB per octave/two-pole design. This filter reduces the level of frequencies that
fall below the cutoff frequency.
Filter Envelope Parameters
The Filter Envelope lets you control the filter’s cutoff frequency over time. All of the
filter envelope’s parameters can be adjusted either numerically in the parameter area
or graphically in the main display using the techniques discussed in “Setting
Envelope Parameters” on page 132.
The parameters for the Filter Envelope are as follows:
 Init Level: Sets the initial cutoff frequency of the Filter Envelope.
 Attack Time: Determines the time required to reach the Break Level (see below) value.
 Break Level: Sets the maximum filter cutoff frequency the envelope reaches. It also
acts as the break point between the attack and decay phases of the overall filter
envelope. In other words, when this level has been reached after the attack phase,
the decay phase will begin. You can create interesting filter sweeps by setting the
Break Level to a value lower than that of the Init Level.
 Decay Time: Determines the time required (after the Break Level point) to reach the
End Level value.
 End Level: Sets the filter end cutoff frequency.
Controls the Attack Time
endpoint (and Decay
Time startpoint) and
Break Level parameters
simultaneously.
Controls the
Decay endpoint and
End Level parameters
simultaneously