u-he

Chris-S · Post by **Chris-S** » Fri Oct 30, 2015 9:02 pm

Hi,
I measured a slope of 5 dB/octave for the pink noise generator of Bazille.

While "real" pink noise having a slope of 3 dB.

What's the reason for this?

Chris

Howard · Post by **Howard** » Sat Oct 31, 2015 8:20 am

Whose authority

Chris-S · Post by **Chris-S** » Sat Oct 31, 2015 8:34 am

So it's brown-pink noise.

https://en.wikipedia.org/wiki/Colors_of_noise

Howard · Post by **Howard** » Sat Oct 31, 2015 1:45 pm

Cool, I didn't know that! Here's the Pink Noise definition:
https://en.wikipedia.org/wiki/Pink_noise

Chris-S · Post by **Chris-S** » Sat Oct 31, 2015 4:47 pm

Brown noise can easily be generated:
Sample(n+1) = Sample(n) + Random

While pink noise needs more effort.

Howard · Post by **Howard** » Sat Oct 31, 2015 8:13 pm

...but who really cares, as long as the noise sources sound good and are all useful?

V0RT3X · Post by **V0RT3X** » Sat Oct 31, 2015 8:13 pm

Howard wrote:...but who really cares, as long as the noise sources sound good and are all useful?

+1000

pdxindy · Post by **pdxindy** » Sun Nov 01, 2015 6:12 am

Howard wrote:...but who really cares, as long as the noise sources sound good and are all useful?

Especially since Bazille can make an endless range of noises...

Chris-S · Post by **Chris-S** » Sun Nov 01, 2015 9:10 am

Don't get me wrong, I'm not complaining.

Just curious why Bazille is outputting brown noise instead of pink.

Constructed Identity · Mon Nov 02, 2015 9:48 pm

Could be a filter intentionally or unintentionally passed over the spectrum.
I don't know if it is possible to bypass the filter completely in this synth, but I haven't played with it recently.

aaron aardvark · Post by **aaron aardvark** » Tue Nov 03, 2015 6:24 am

One of my bosses is color blind. Maybe that is the problem.

Urs · Post by **Urs** » Tue Nov 03, 2015 12:42 pm

Hmm, I am pretty sure it's a classic pink noise algorithm.

What tool do you use to measure? Some come pre-sloped by default which always throws me...

Chris-S · Post by **Chris-S** » Tue Nov 03, 2015 1:57 pm

Hi Urs,
I used Voxengo Span, which has by default a 4.5 db per octave slope (can be adjusted in Mode-Edit).

Compare with Reaper's pink noise JS plugin which is perfect as you see.

ZeePok · Post by **ZeePok** » Wed Nov 04, 2015 10:46 am

Chris-S wrote:Don't get me wrong, I'm not complaining.

Just curious why Bazille is outputting brown noise instead of pink.

So that's why I have to use the toilet every time I use Bazille ...

(had to make 'em ...) . .

u-he

KVR Audio

Bazille and the pink noise