Audacity Forum

HI,
I need a track with 9 (40ms) bursts of white noise (20-30 seconds apart), but I can only get it to generate 30-sec of white noise. Any suggestions?!

my generate noise allows a time selection in 1.3.9
I put in 90 seconds and got 90 seconds of noise.
Want gaps? insert silence.
or generate samples in 9 files and slide them to the time location
then merge the files

what version are you using? What did you do ?
why do you think you can only get 30 seconds?

if you meant you could not get smaller samples than 30 seconds
then pick the drop down arrow
and choose h m s and milliseconds
select 40 ms for sample length

my problem would be with the statistics.
it seems to have a very narrow amplitude variance.
and the mean does not make sense since i have to specify 0-1 instead of db level.

this may actually be white noise
but does not look like scope samples i saw in a lab once
that said it sounds sort of like white noise but a bit harsher and sharper - probably close enough for govt work

feature request
allow setting mean in db and also variance of the noise generated.

1) Generate 0.04 seconds of white noise
2) Press the "End" key to move the cursor to the end
3) Generate 20-30 seconds of silence
4) Press Ctrl+A (select all)
5) From the Effect menu select "Repeat" and enter the number 8, then press OK.