Echobode is a delay effect with a frequency shifter placed inside the feedback loop. The frequency shifter algorithm is inspired by the classic Bode Frequency Shifter (named after its inventor Harald Bode). The difference between a frequency shifter and a pitch shifter is that it shifts the audio spectrum linearly. E.g. an overtone series of 100, 200, 300 Hz can be shifted by 50 Hz to 150, 250, 350 Hz, making the overtones inharmonic. This effect in itself is great for creating metallic bell timbres, but putting it inside a delayed feedback loop opens up many other possibilities.
An excellent and quirky delay plug-in from Magnus at Sonic Charge. This one incorporates a Bode frequency shifer (please note: this isn't the same thing as a pitchshifter! The latter uses FFT. This is an old-school frequency shifter, similar in sound to a ring modulator). The audio is shifted and then sent to a delay. An LFO is used to modulate the delays, and the delay has an excellent 'smear' function, which can be used to give a sort of psuedo reverb effect. You can control the dry/wet mix of the plug in very easily too.
It can be useful to get an authentic 'Dr Who' vibe, and the comprehensive preset list demonstrates the full scope of the plug-in, with names like 'Swedish 1970s Television Reverb'...
It's really good fun to use.