benfaber
It depends on your needs.
If monitoring multiple time waveforms, multiple narrowband spectra, and a single channel of whole or third octave spectral data will meet your needs, then SignalScope Pro will work nicely.
If you need to monitor one or more transfer functions, impulse responses, or correlation functions, or if you need to monitor time or frequency data from multiple audio devices simultaneously, then Electroacoustics Toolbox is what you're looking for.
Ben
