In other news im devleoping my new portfolio flash site for may1streboot you might wanna check out so head over there and vote for me when we release!

the demo is 10mb you can dload here: www.vectorsesh.com/idat309/scene.exe

I have built a demo using a 3d sphere (exported from max to .w3d format) and the xtra and the screenhot below are attempting to show the sphere increasing and decreasing in size depending on the volume of the audio input (respectively).

 < – remove volume  -  add volume – >

The Asfft plugin works by implementing the fst fourier transform method of measuring sound and converts the values to usable variables

The demo uses 2 scripts… a “do_asfft” and a “react_asfft”

Do contains all the stuff for the plugin to be able to function with my object and react contains the code to tell the models what to do or how asfft affects them

do_asfft:

property gFFT, gBins

global values

on beginSprite

– creates xtra instance and checks it worked

gFFT = new(Xtra “asFFT”)

if not objectp(gFFT) then put “error ‘new’ failed”

– sets the number of bins/ frequencies you want (must be power of 2)

– can be between 2 and 256, 8 works well, any lower and its not very accurate

– try using setParams(gBins, 4) if you want it to be more accurate, but cost in processing time

gBins = 32

err = gFFT.setParams(gBins)

if err = 0 then put “error init” & gFFT.getError()

end

on enterFrame

if objectp(gFFT) then

– get mic data, returns an array/ list. values.count will = gBins

– 100 is the number that full volume will be- i used 100 as 100%

– but you can use any number even 11 like spinal taps amp!

–

– true, false means normalised, unequalised. normalised sound will show volume

– otherwise it will only show frequency- the equaliser makes mine crash!

values = gFFT.getFFT(100, TRUE, FALSE)

if values = 0 then put “error reading”&gFFT.getError()–put values

– dumps out global var values, tab this out and it can still be used

–put values

– from elsewhere, read the list using

–

– global values

– repeat with i = 1 to values.count

– put values[i]

– end repeat

end if

end

react_asfft:

property n, spritenum, s

s = sprite( spritenum ) n = random( 32 ) end

on enterframe

member(“test”).model(“test”).transform.scale=vector(0.5,0.5,0.5) * values[2] end

- Virtual environment for my artwork portfolio

- Learning – game for young people

- Visualisation tool – being able to view something from views not usually possible – architectural tool – modelled city navigate the area and be able to interact with objects with clicks revealing information

http://www.physicalbits.com/Xtras/Detailed/SerialXtraIntro106.htm