Hey madgreek,
As far as the signal processing toolkit vs. the Advanced signal processing toolkit, they are just different versions of the same software. After the release of the Signal Processing Toolkit version 7.0.1, NI changed the name to Advanced Signal Processing Toolkit version 7.5.
As for the cepstrum.vi, are you asking in which tookit it exists or if it exists at all? I have found no reference to a cepstrum VI within the LabVIEW Toolkits. Do you know that a VI exists to perform the cepstrum?
Brian B
Account Manager
National Instruments