Comb Filter Sound Parameters

This is a 6 dB/oct low-pass filter that affects the sound being fed back into the comb filters. This means the sound becomes gradually softer when decaying, that is, high harmonics decay faster than the lower harmonics (as when plucking a string on a guitar, for example).

• The lower the Damping, the more pronounced this effect.

  If you open the filter completely (turn Damping up to max) the harmonic content is static – the sound does not get softer when decaying.

Determines the level of the impulse sound being fed into the comb filters. By default, this parameter is modulated by envelope 2. That is, you use envelope 2 as a level envelope for the impulse sound.

• For a string-type sound, you want an envelope with a quick attack, a very short decay and no sustain (an impulse in other words), but you can also use other envelopes for other types of sounds.

  Try raising the attack for example, or raising the sustain to allow the impulse sound to be heard together with the comb filter sound.

Allows you to send noise directly into the comb filters. Small amounts of noise produce a crackling, erratic effect, higher amounts give a more pronounced noise sound.

Determines the amount of signal sent back into the comb filters (the feedback level).

• Setting Feedback to zero (twelve o’clock) effectively turns off the comb filter sound, as no feedback tone is produced.

• Setting Feedback to a positive value creates a feedback tone, with higher settings generating longer decays.

• Setting Feedback to a negative value creates a feedback tone with a more hollow sound, pitched one octave lower. Lower settings generate longer decays.

Offsets the notch frequencies of the three parallel comb filters, effectively changing the pitches of their feedback tones. At low settings, this creates a chorus-like detune effect. Higher settings detunes the three tones in wider intervals.

Overall pitch adjustment of the final sound. This changes the pitch of both the impulse sound and the final comb filter sound.

Determines whether the impulse sound should track the keyboard. This affects the sound of the comb filters in a way similar to a key track switch on a regular subtractive synth filter.

Makes the pitch glide between the notes you play. The parameter setting determines the time it takes for the pitch to glide from one note to the next. Turn the knob clockwise for longer glide time.

The Mode switch allows you to apply glide only when you play a legato note (switch is set to Legato). Legato is when you play a note without releasing the previously played note. Note that Legato mode only works with monophonic parts.