About Plate Daddy
A real plate reverb is a thin steel sheet under tension, and bending waves in steel are dispersive — their speed rises with frequency. Strike the plate and the highs arrive before the lows. That upward chirp is the plate signature, and it is the thing most digital plates leave out: an ordinary feedback delay network has flat group delay, so it sounds like reverb rather than like a plate.
Plate Daddy reproduces it directly. The tank is a 16-line network in which every delay line carries a cascade of allpass filters, holding the low end back and letting the top run ahead. The Dispersion control scales that behaviour — and at zero the unit collapses into an ordinary, perfectly good reverb, which is a useful thing to hear once.
Seven plates, each with its own measured amount of dispersion, from Gold Foil at the subtle end to Chrome at the most pronounced.