envelope

[Il predicatore]

Hi! Well,this is my problem: i acquire a signal from an
instrument(Spectrophotometer),and i put the sampled data into an array.Then
i must find maxima and minima and make the envelope of max and the envelope
of min.In theory,i should make an interpolation of this point to find
envelope.The problem is that the signal has many "spikes" so the function
"peak detector" gives faulse max and min,and so by by envelope!!Any ideas to
help me?

[mikeporter]

Try averaging the spectra over time. This will reduce or eliminate spikes that are the result of noise. Any remaining spikes you'll have to deal with in other ways.

Mike...