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acoustic signals in ducts and CPS

acoustic signals in ducts and CPS

acoustic signals in ducts and CPS

(OP)
I often calculate the Cross Power Spectrum (CPS) of two acoustic signals (two signals given by two microphones mounted at two different positions in a duct). Can I use the CPS for any kind of acoustic signals ? (non-linear signals particularly)

Thanks in advance.

Sylvette.

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