Fast 2d brown/pink noise generation?

Discussion in 'Python' started by Mathias, Mar 4, 2005.

  1. Mathias

    Mathias Guest

    Dear NG,

    I'm looking for a fast way to produce 2d-noise images with 1/f or 1/f^2
    spectrum. I currently generate the noise via inverse FFT, but since I
    need lots of data (~10^7 for a monte carlo simulation) it needs to be
    really fast. Does someone know a faster way than my approach?

    - Dimensionality is between 20x20 and 100x100
    - The spectrum doesn't need to be exactly pink/brown, an approximation
    is fine.
    - Implementation in either matlab or scientific python (LAPACK anyway)


    Thanks a lot for hints, literature, algorithms!
    Mathias
     
    Mathias, Mar 4, 2005
    #1
    1. Advertisements

Want to reply to this thread or ask your own question?

It takes just 2 minutes to sign up (and it's free!). Just click the sign up button to choose a username and then you can ask your own questions on the forum.
Similar Threads
  1. Peter Strøiman
    Replies:
    1
    Views:
    2,375
    Peter Strøiman
    Aug 23, 2005
  2. Replies:
    34
    Views:
    15,487
    Oliver Wong
    Sep 12, 2005
  3. Mathias
    Replies:
    1
    Views:
    1,675
    Robert Kern
    Mar 5, 2005
  4. Adam Hartshorne
    Replies:
    1
    Views:
    783
    Victor Bazarov
    Jul 9, 2005
  5. braskor
    Replies:
    0
    Views:
    542
    braskor
    Sep 24, 2008
  6. Adil Kaleem

    Help needed in downloading Brown corpus

    Adil Kaleem, May 1, 2010, in forum: Python
    Replies:
    4
    Views:
    2,245
    Adil Kaleem
    May 2, 2010
  7. Jim Weirich
    Replies:
    0
    Views:
    307
    Jim Weirich
    Aug 21, 2003
  8. David A. Black
    Replies:
    2
    Views:
    238
    Arlen Cuss
    Mar 12, 2008
Loading...