Extron electronics DMP 64 User Manual page 45

By increasing the Q to 10.000, the center frequency remains the same. The markers show
the bandwidth of the filter narrowed to between 900 Hz and 1200 Hz, or about 300 Hz
(see figure 30). Parametric filters can be used to notch out a very narrow, or very wide
range of frequencies using the Q setting.
Figure 30. Parametric Filter at 1000 Hz, Q: 10.000
The dialog window above shows the frequency curve for a single active filter. To add its
effect to the overall frequency response, remove the bypass on the other filters.
DMP 64 • Software Control 39