Nope! Dejavu is meant for recovery of perfectly maintained signals with additive noise. That is to say, detecting a signal or song played slightly slower than t

Nope! Dejavu is meant for recovery of perfectly maintained signals with additive noise. That is to say, detecting a signal or song played slightly slower than the original hashed version is completely outside what Dejavu can do. Detecting a signal played back at the same speed with a lot of background noise is just fine - that's what the algorithm is meant for.