Soundtoys EchoBoy - Manual (Page 52)

short echo times, this can give you a kind of room reverb effect where the individual repeats
meld into a cluster of short diffused and smeared delays.
At longer echo time settings, and with feedback turned up, the diffused delays can create a kind
of plate or hall reverb effect. When in Dual, Ping Pong or Rhythm mode the effect will sound
more dense as you have more than one delay being diffused and each delay can be set to a
different time.
A couple of things to note – the Diffusion control will “soften’ the echoes making them less
distinct but at the same time Diffusion CAN cause some strange resonance. This is similar to
the sound you get when you turn up the feedback on a Flanger; it can sound a little metallic and
“robot” like. So you need to use your ears and try to strike a balance between trying to impart a
reverb like quality and at the same time keeping the sound from being too resonant.
The sound of the Diffusion is also highly dependent on the setting of Diffusion Size control, the
Loop/Post switch setting, the echo time and the amount of echo Feedback – they are all highly
interactive.
Size
The diffusion size parameter adjusts the character of the diffusion effect. Smaller settings will
produce more subtle diffusion effects, and even phasing effects at extremely small settings.
Larger settings can produce more reverb-like effects. You may find some settings that sound
really great with percussive input but stinks with sustained sounds and visa versa. You just may
have to experiment and tweak a bit to get it to sound “good” (or bad for that matter)
depending on what you want. Like we’ve mentioned before, use your ears as a guide – if it
sounds good, do it!
Loop / Post Switch
The Loop/Post switch defines where in the echo path the Diffusion filters are placed. In the
down or “Post” position the echo are diffused at the the end of the signal chain, and each echo
repeat is equally diffused. In the up or Loop position, the diffusion is moved into the feedback
loop of the echo, and each successive repeat will become increasingly diffused.
Wobble
The Wobble parameters adds a ‘vari-speed’ effect to the echo – kind of like the wow from tape
recorders and tape echo machines. This allows you to add a bit (or a lot) of analog feel and