Delay and Reverb

Delay creates repeats. Time sets the interval; Feedback returns part of a repeat to create the next repeat; Blend sets the mix; Tone colors the repeats. At tempo B BPM, quarter = 60,000/B ms, eighth = quarter/2, and dotted eighth = quarter×0.75. At 120 BPM, a quarter is 500 ms and a dotted eighth is 375 ms. Tempo sync chooses a duration from BPM rather than applying manual Time at the same time.

Digital is often clearer; tape and analog add color. Ping-pong moves left/right when output and routing preserve stereo. Accumulating repeats can raise RMS and peak levels. More Feedback does not always extend the tail musically; listen when you stop playing and when a new chord arrives.

Reverb imitates reflections and space. Room is small, Hall is larger, Plate has a smooth tail, and Shimmer adds a pitched component. Decay controls tail length, Damping reduces the tail's high frequencies, Pre-delay leaves an initial gap before ambience, Width controls stereo spread, and Blend sets the balance. Pre-delay is not device latency. The app's normalized Decay knob does not necessarily represent T60 in seconds.

Large ambience can blur articulation. When evaluating a lead's foundation, turn Delay/Reverb off first, then add them as needed. Bypassing a pedal, reducing Blend, changing a preset, and preserving tails are different behaviors. Spillover needs testing; it should not be promised merely because an effect is called Reverb.