From the title i though: impulse responses, convolution reverb but in some kind of pedal format…
…so you could use it like a looper but instead of reverb upload anything and mix together sounds to weird effect.

now that would be cool! one up on the vocoder, perhaps, but no obtainable convolution hardware, let alone pedal exists.

I don’t care about the reverb as much just the unintended use as an effect mixing up instruments