Roman Thilenius

does anyone have a function generator (float data) to generate a "mexican hat" waveform?

i have a custom gaussian generator, and i have peter castines patch for

laplace, (which i think is identically with the mexican hat) but both dont

create curves for waves, they are only creating random numbers of the

i have a custom gaussian generator, and i have peter castines patch for
laplace, (which i think is identically with the mexican hat) but both dont
create curves for waves, they are only creating random numbers of the
respective distribution.

mexican-hat

Not sure what kind of function you are after, but there are some very handy patches out there for similar things.

Try the patch sm.window-maker by Steven Miller.

http://www.stevenmmiller.net/software.html

Also one of Fredrik Olafsons abstractions could be the one. Look at "Make envelopes".

http://www.fredrikolofsson.com/pages/code-max.html

And Graham Wakefield posted a very nice patch in this thread:

https://cycling74.com/forums/creating-a-hanning-window

sm.window-maker ... yeah i have my custom window makers, too, that is what it is about.

the function "flat-top" seems to be at least something similar to laplace, the form

looks familiar, just the weighting seems different.

mexican hat / laplace should result in almost identical sqare-roots (energy) for both poles.

sm.window-maker ...  yeah i have my custom window makers, too, that is what it is about.

the function "flat-top" seems to be at least something similar to laplace, the form
looks familiar, just the weighting seems different.
mexican hat / laplace should result in almost identical sqare-roots (energy) for both poles.


OK, let me start off by saying that I know fuck all about this.

However, if a mexican hat is a negative normalised distribution of a second derivative of a Gaussian function, then is this any help?

Second derivative of a Gaussian function.

(a*e^(-((b-x)^2)/(2*c^2)) * (b^2 - 2*b*x - c^2 + x^2)) / c^4

... hmm ... set new members to "moderated" ?

Or add a difficult captcha for new members? Or implement the Akismet API? (the latter is probably a lot of work, but it works very well)