Waldorf Q Keyboard User Manual page 112

Sound Parameters – Effects
Bandwidth
Controls the width of the synthesis bands. Negative values result in wider bands while positive values
result in narrower bands. 0 is the ideal Vocoder setting but it's up to you if you want other widths.
Resonance
Controls the impulse response of the synthesis bands. Again, 0 results in an ideal Vocoder effect while
you can remove resonance to make the vocoded signal less defined or add resonance to get bellish
sounds.
Attack
Controls the raise rate of the synthesis bands until they reach the level evaluated by the respective
analysis band. For real Vocoder sounds, set it between 0 and 15.
Decay
Controls the decay rate of the synthesis bands until they reach minimum volume. For real Vocoder
sounds, set it between 10 and 25. Shorter values might result in nervous volume changes of individual
bands while longer values smear the signal. Both can be nice, but if the results aren't as you've
expected them, try to change this parameter.
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When you set Decay to 127, you get a Resonator effect. Be careful with the input signal
volume then.
EQ Low Band Level and EQ High Band Level
Control the overall weighing of all synthesis bands by ±18dB. When you set both to the same level,
the filters are all equal in volume, if you set one of them to a different value, all filters in-between are
scaled proportionally.
EQ Middle
Selects the band that is emphasized or attenuated by Mid Level. The surrounding bands are scaled to
match the level of the Middle EQ.
Mid Level
Emphasizes or attenuates the band selected with EQ Middle by ±18dB.
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