The sound file you hear :
1. Unaltered
2. Midrange (BPF) Mix : 100%, 1khz, Q=8
3. Midrange (BPF) Mix : 100%, 1khz, Q=.66
4. Unaltered again
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Figure 60 : Digilogue BlueFilter control settings for the band pass filter (midrange with high Q)
Figure 61 : Digilogue BlueFilter control settings for the band pass filter (midrange with low Q).