Echo/Reverb

The echo is enabled by tapping the button on the XY-pad.

The echo is a standard Schroeder nested all pass filter (invented in 1962), courtesy Valhalla DSP.

On the XY pad, the following parameters are set out:

• Vertically, the density is set out. The lower half are pre-echos. The upper half are the transients and the feedback. In the middle, transients are maximally smeared. This is the feedback of the diffuser.
• From left to right the delay feedback is set out. With the left half retrieving the pre-echos before the actual signal, and the right half with a standard echo. This axis specifies the feedback of the outer delay line.