Yamaha QY70 Owner's Manual - Page 72

The Song Voice Mode q Filter Controls The filter controls affect the basic "timbre" of the sound. Resonance Cutoff Frequency CUT (Cutoff Frequency) Sets the cutoff frequency of the low-pass filter from "-64" through "0" to "+63". Negative values lower the cutoff frequency, producing a "darker" sound. Positive values raise the cutoff frequency, producing a brighter sound. The graphic filter response curve will shift to indicate the current setting (the heavy default setting curve will also remain on the display). RES (Resonance) Adjusts the height of the filter's resonance peak from "64" through "0" to "+63". Negative values lower the resonant peak producing a "flatter" sound. Positive values increase the resonant peak, emphasizing components at the filter cutoff frequency. The peak on the graphic filter response curve will grow or shrink to indicate the current setting (the heavy default setting curve will also remain on the display). 70