A system for correcting erroneous microphone readings in a vehicle engine harmonic cancellation (EHC) system. A method for operating an engine harmonic cancelling system, includes receiving, from a first microphone at a first location in a vehicle cabin, a signal representative of noise in the vehicle cabin； receiving, from a second microphone at a second location in the vehicle cabin, a signal representative of noise in the vehicle cabin； and correlating the signal from the first microphone with the signal from the second microphone.
