Datapoint: I just tried repeating a ~1 sec brown noise clip in Audacity and I'm not sure if I get that "choo choo" effect. It sounds pretty "continuous" to me. However, I think this requires ABX testing in order to make sure.
On Thu, May 8, 2014 at 8:14 PM, Nigel Redmon <earle...@earlevel.com> wrote: > The 2-second area is my recollection as well, from when I played with > noise sequence length, probably 20 years ago. Under 2, you don’t really > have to pay attention to hear a repeat—your latches onto it easily—and as > you get longer, you have to listen more carefully, and you get to the point > quickly where you’re questioning yourself whether you’re hearing it repeat. > > The bottom line, I think, is that yes white noise is random, but the low > frequency components are, well, low frequency. And it’s pretty each to pick > out a repeating bump there. Not necessarily the bass end, more in the kids, > and is probably a tradeoff between frequency and ear sensitivity. > > I just did a q&d app, which generates 10 seconds of white noise, then > adjusts the loop length as a percentage of the mouse vertical in the > window, and start point based on horizontal position. > > Anyway, like I said, I’ve been through this before so there were no > surprises. Sampo, were you looking for a particular revelation? I’m not > sure if I’m listening for what you were getting at. > > > On May 8, 2014, at 8:43 AM, STEFFAN DIEDRICHSEN <sdiedrich...@me.com> > wrote: > > I bounced some 100 secs of noise taken from the test oscillator in Logic > Pro. Loaded this in the IRU and did some cycling. > > My finding: There are portions in the noise, that allows me to go down > to 2 seconds and it still sounded like straight (un-looped) noise. Other > noise portions had “features”, that sounded like persons talking in the > background or a squeak, or so. That’s so prominent, that it was easy to > identify the cycle. > > Than, I did some experimentation, the IRU allows you to playback a > selection in a cycle and the cycle can be dragged around without > interrupting the playback. Doing that over a length of about 4 seconds with > a 2 second long selection sounded to me like straight noise. > > > > Steffan > > > > > > On 08 May 2014, at 12:35, Sampo Syreeni <de...@iki.fi> wrote: > > > >> Interestingly, nobody's taken the test as of yet. Even if it ain't in > the least bit a contest, and I already said to begin with that the result > might be rather interesting for any and all. > > -- > dupswapdrop -- the music-dsp mailing list and website: > subscription info, FAQ, source code archive, list archive, book reviews, > dsp links > http://music.columbia.edu/cmc/music-dsp > http://music.columbia.edu/mailman/listinfo/music-dsp > -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
