ABSYNTH 5 Reference Manual – 70Feedback PanelFurthermore, the allpass filters are equipped with a feedback loop. Its function and parametersare detailed at section 5.5.3, “Feedback Loop and Feedback Panel”, above.5.5.7 BandpassBandpass Filter BPFBandpass filters combine a highpass and a lowpass filter: they dampen all frequencies thatlie outside a particular frequency range defined by two cutoff frequencies (or by a middlefrequency and a bandwidth). This means that this particular frequency range is allowed topass through, whilst lower and higher frequencies outside the range are suppressed.Main PanelABSYNTH 5’s bandpass filter BPF has the following parameters:• Frequency control and Frequency menu: The Frequency control allows you to set themiddle frequency in semitones (Trans) or in Hertz (Hz), upon the selection in the nearbyFrequency menu.• Q control: Sets the bandwidth of the filter around the middle frequency. Its values go from0 to 1000 Hz.• Damping control: Allows you to balance out any level fluctuations introduced by the filter(in dB).
