I gave a talk at the 2010 comp.dsp conference that has several pink noise 
filter solutions.

http://compdsp.com/presentations.htm

There are also many other presentations at this site.

Al Clark
www.danvillesignal.com










Tim Wescott <tim@seemywebsite.com> wrote in 
news:JeWdncmTDcEBCqrNnZ2dnUVZ_rSdnZ2d@web-ster.com:

> On Fri, 24 Aug 2012 10:25:52 +0000, Allan Herriman wrote:
> 
>> On Fri, 24 Aug 2012 02:59:47 -0700, kalvin.news wrote:
>> 
>>> perjantai, 24. elokuuta 2012 3.10.27 UTC+3 Tim Wescott kirjoitti:
>>>> Oddball question.  Or maybe just a plea for comments.
>>>> 
>>>> 
>>>> 
>>>> I'm kind of getting painted into a corner, and the color of the paint
>>>> is
>>>> 
>>>> pink.  It's looking like I need to estimate pink noise with a Kalman
>>>> 
>>>> filter.
>>>> 
>>>> 
>>>> 
>>>> Anyone done anything remotely like this?  Know of anyone who has?  Did
>>>> 
>>>> they survive?
>>>> 
>>>> 
>>>> 
>>>> The method that I know of for simulating pink noise involves running
>>>> 
>>>> white noise through a filter with a ton-o-poles (our own RBJ popped up
>>>> in
>>>> 
>>>> the web search, interestingly enough).  I'm kinda planning on doing
>>>> just
>>>> 
>>>> that for the kernel in the Kalman, and see if I can find some sane
>>>> 
>>>> balance between the number of states needed and accuracy.
>>>> 
>>>> 
>>>> 
>>>> --
>>>> 
>>>> My liberal friends think I'm a conservative kook.
>>>> 
>>>> My conservative friends think I'm a liberal kook.
>>>> 
>>>> Why am I not happy that they have found common ground?
>>>> 
>>>> 
>>>> 
>>>> Tim Wescott, Communications, Control, Circuits & Software
>>>> 
>>>> http://www.wescottdesign.com
>>> 
>>> Here's a nice page about generating pink noise without too much fuzz.
>>> 
>>> http://www.firstpr.com.au/dsp/pink-noise/
>>> 
>>> See section "Filtering white noise to make it pink" and specially "Paul
>>> Kellet's refined method in Allan's analysis".
>>> 
>>> Hope this helps you with getting the correct color out.
>> 
>> 
>> That page brings back a lot of memories.
>> 
>> Allan
> 
> That page is where I found the handy algorithm for generating a pinking 
> filter!
> 

On Fri, 24 Aug 2012 10:25:52 +0000, Allan Herriman wrote:

> On Fri, 24 Aug 2012 02:59:47 -0700, kalvin.news wrote:
> 
>> perjantai, 24. elokuuta 2012 3.10.27 UTC+3 Tim Wescott kirjoitti:
>>> Oddball question.  Or maybe just a plea for comments.
>>> 
>>> 
>>> 
>>> I'm kind of getting painted into a corner, and the color of the paint
>>> is
>>> 
>>> pink.  It's looking like I need to estimate pink noise with a Kalman
>>> 
>>> filter.
>>> 
>>> 
>>> 
>>> Anyone done anything remotely like this?  Know of anyone who has?  Did
>>> 
>>> they survive?
>>> 
>>> 
>>> 
>>> The method that I know of for simulating pink noise involves running
>>> 
>>> white noise through a filter with a ton-o-poles (our own RBJ popped up
>>> in
>>> 
>>> the web search, interestingly enough).  I'm kinda planning on doing
>>> just
>>> 
>>> that for the kernel in the Kalman, and see if I can find some sane
>>> 
>>> balance between the number of states needed and accuracy.
>>> 
>>> 
>>> 
>>> --
>>> 
>>> My liberal friends think I'm a conservative kook.
>>> 
>>> My conservative friends think I'm a liberal kook.
>>> 
>>> Why am I not happy that they have found common ground?
>>> 
>>> 
>>> 
>>> Tim Wescott, Communications, Control, Circuits & Software
>>> 
>>> http://www.wescottdesign.com
>> 
>> Here's a nice page about generating pink noise without too much fuzz.
>> 
>> http://www.firstpr.com.au/dsp/pink-noise/
>> 
>> See section "Filtering white noise to make it pink" and specially "Paul
>> Kellet's refined method in Allan's analysis".
>> 
>> Hope this helps you with getting the correct color out.
> 
> 
> That page brings back a lot of memories.
> 
> Allan

That page is where I found the handy algorithm for generating a pinking 
filter!

-- 
My liberal friends think I'm a conservative kook.
My conservative friends think I'm a liberal kook.
Why am I not happy that they have found common ground?

Tim Wescott, Communications, Control, Circuits & Software
http://www.wescottdesign.com

On Fri, 24 Aug 2012 02:59:47 -0700, kalvin.news wrote:

> perjantai, 24. elokuuta 2012 3.10.27 UTC+3 Tim Wescott kirjoitti:
>> Oddball question.  Or maybe just a plea for comments.
>> 
>> 
>> 
>> I'm kind of getting painted into a corner, and the color of the paint
>> is
>> 
>> pink.  It's looking like I need to estimate pink noise with a Kalman
>> 
>> filter.
>> 
>> 
>> 
>> Anyone done anything remotely like this?  Know of anyone who has?  Did
>> 
>> they survive?
>> 
>> 
>> 
>> The method that I know of for simulating pink noise involves running
>> 
>> white noise through a filter with a ton-o-poles (our own RBJ popped up
>> in
>> 
>> the web search, interestingly enough).  I'm kinda planning on doing
>> just
>> 
>> that for the kernel in the Kalman, and see if I can find some sane
>> 
>> balance between the number of states needed and accuracy.
>> 
>> 
>> 
>> --
>> 
>> My liberal friends think I'm a conservative kook.
>> 
>> My conservative friends think I'm a liberal kook.
>> 
>> Why am I not happy that they have found common ground?
>> 
>> 
>> 
>> Tim Wescott, Communications, Control, Circuits & Software
>> 
>> http://www.wescottdesign.com
> 
> Here's a nice page about generating pink noise without too much fuzz.
> 
> http://www.firstpr.com.au/dsp/pink-noise/
> 
> See section "Filtering white noise to make it pink" and specially "Paul
> Kellet's refined method in Allan's analysis".
> 
> Hope this helps you with getting the correct color out.


That page brings back a lot of memories.

Allan

perjantai, 24. elokuuta 2012 3.10.27 UTC+3 Tim Wescott kirjoitti:
> Oddball question.  Or maybe just a plea for comments.
> 
> 
> 
> I'm kind of getting painted into a corner, and the color of the paint is 
> 
> pink.  It's looking like I need to estimate pink noise with a Kalman 
> 
> filter.
> 
> 
> 
> Anyone done anything remotely like this?  Know of anyone who has?  Did 
> 
> they survive?
> 
> 
> 
> The method that I know of for simulating pink noise involves running 
> 
> white noise through a filter with a ton-o-poles (our own RBJ popped up in 
> 
> the web search, interestingly enough).  I'm kinda planning on doing just 
> 
> that for the kernel in the Kalman, and see if I can find some sane 
> 
> balance between the number of states needed and accuracy.
> 
> 
> 
> -- 
> 
> My liberal friends think I'm a conservative kook.
> 
> My conservative friends think I'm a liberal kook.
> 
> Why am I not happy that they have found common ground?
> 
> 
> 
> Tim Wescott, Communications, Control, Circuits & Software
> 
> http://www.wescottdesign.com

Here's a nice page about generating pink noise without too much fuzz.

http://www.firstpr.com.au/dsp/pink-noise/

See section "Filtering white noise to make it pink" and specially "Paul Kellet's refined method in Allan's analysis".

Hope this helps you with getting the correct color out.

- Calvin

Oddball question.  Or maybe just a plea for comments.

I'm kind of getting painted into a corner, and the color of the paint is 
pink.  It's looking like I need to estimate pink noise with a Kalman 
filter.

Anyone done anything remotely like this?  Know of anyone who has?  Did 
they survive?

The method that I know of for simulating pink noise involves running 
white noise through a filter with a ton-o-poles (our own RBJ popped up in 
the web search, interestingly enough).  I'm kinda planning on doing just 
that for the kernel in the Kalman, and see if I can find some sane 
balance between the number of states needed and accuracy.

-- 
My liberal friends think I'm a conservative kook.
My conservative friends think I'm a liberal kook.
Why am I not happy that they have found common ground?

Tim Wescott, Communications, Control, Circuits & Software
http://www.wescottdesign.com