> Does any body knows how to compare waveforms?

> I work with HP-VEE 3.21, I need to reject waveforms with

> a size higher or smaller than 90% related to a reference.

> Thanks for any help.

You don't explain the waveform at all. This might help though.

If it is simply the peak value of the waveform, just use the max(x)

function and compare to the value of the reference. If this is a

repeating waveform embedded in noise, perhaps fft(x) and compare

values at the frequency of interest. Or if you are looking at

waveform shapes, you might try a convolve(a,b) and look at that array.

Good luck,

lBill

> I work with HP-VEE 3.21, I need to reject waveforms with

> a size higher or smaller than 90% related to a reference.

> Thanks for any help.

You don't explain the waveform at all. This might help though.

If it is simply the peak value of the waveform, just use the max(x)

function and compare to the value of the reference. If this is a

repeating waveform embedded in noise, perhaps fft(x) and compare

values at the frequency of interest. Or if you are looking at

waveform shapes, you might try a convolve(a,b) and look at that array.

Good luck,

lBill

gvg@lvld.hp.com / 970-679-3030 / FAX 970-679-5971

website: ftp://fcext3.external.hp.com/dist/mxd/index.html

to: VRf-Edgardo Troncoso San Martin

date: Monday, 22 September 1997 1046 MDT

> Does any body knows how to compare waveforms?

> I work with HP-VEE 3.21, I need to reject waveforms with

> a size higher or smaller than 90% related to a reference.

> Thanks for any help.

> ----

> Edgardo Troncoso San Martin

> Dep de Morphologie / CMU

> 1,M Servet / CH-1211 Geneve

> SUISSE..FAX+41.22.702 52 60

Sir:

Do you mean that you have a constant value as a reference and the waveform

is between 10% and 190% of that value? Or do you have a waveform as a

reference? Or are the bounds 90% and 110%?

Please stay in touch.

[<>] regards -- gvg