well i just figured it out, it is pretty funny and can help make nice weird vocal sounds...
just turn up ditortion to the RateReduce type, set intensity to around 50-64
BP filter, turn down cutoff to 50
rez up to u (the higher makes the sound louder)
env amount: the lower values tend to make a "eeeeeh" vowel, higher values make it sound like "ayyy"
it is not a clear choir tho, but can be useful
