electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
 Forum index » Clavia Nord Modular » G2 Building Blocks
Pink Noise Signal
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [4 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
varice



Joined: Dec 29, 2004
Posts: 722
Location: Northeastern shore of Toledo Bend
Audio files: 22
G2 patch files: 49

PostPosted: Sat Oct 15, 2005 11:24 am    Post subject: Pink Noise Signal Reply with quote  Mark this post and the followings unread

I wonder why the G2 Noise module does not have a pink noise setting?

Here are a couple of simple circuits that can be used generate an approximate pink noise signal.


PinkNoise.pch2
 Description:
Here are a couple of simple circuits that can be used generate an approximate pink noise signal.

Download
 Filename:  PinkNoise.pch2
 Filesize:  1.27 KB
 Downloaded:  851 Time(s)


_________________
varice
Back to top
View user's profile Send private message
Rob



Joined: Mar 29, 2004
Posts: 578
Location: The Hague/Netherlands/EC
G2 patch files: 109

PostPosted: Mon Oct 17, 2005 3:55 pm    Post subject: Reply with quote  Mark this post and the followings unread

Here is some more that might be useful to some of you.

1) A digital noise filter that changes the evenly distribution into a bellshaped one.
2) A 'classic' pink noise filter.
3) A noise filter that morphs between pink noise and blue noise.
4) A very cheap in resources filter that is somewhere inbetween pink and white, and enhances the presence of e.g. noise based percussive sounds in a mix.
5) A moderately broad bandpass filter with some slight resonance, not unlike a peak equalizer, but specifically suited for filtering noise. In the patch it is chained after filter 3) to combine into a versatile variable noise filter.


Noises.pch2
 Description:
Five example types of noise filters.

Download
 Filename:  Noises.pch2
 Filesize:  3.25 KB
 Downloaded:  796 Time(s)

Back to top
View user's profile Send private message Send e-mail Visit poster's website
varice



Joined: Dec 29, 2004
Posts: 722
Location: Northeastern shore of Toledo Bend
Audio files: 22
G2 patch files: 49

PostPosted: Tue Jan 31, 2012 1:09 am    Post subject: Pink Noise Test Patch Reply with quote  Mark this post and the followings unread

Here is a patch that produces one of the best pink noise spectrums that may be possible with the G2. It has 33 white noise sources feeding 33 6dB low pass filter bands set at 1/3 octave frequency cutoff intervals from 13.75Hz to 21.1kHz with each higher frequency band attenuated by approximately 1dB (resulting in the required overall -3dB per octave low pass filter slope). Separate white noise sources were used for each filter band to decouple what appears to be a slight signal phase interaction between each band when using a single white noise source. Thankfully the G2 software programmers did a good job of making sure that each noise module in a patch is seeded differently resulting in a different output from each instance. Wink

This patch is too DSP hungry and bloated to be of practical use as a building block noise source in a normal synth patch. But it is useful for the generation of a very accurate pink noise signal for test purposes.


PinkTest.pch2
 Description:
Pink Noise Test Patch

Download
 Filename:  PinkTest.pch2
 Filesize:  6.24 KB
 Downloaded:  294 Time(s)


_________________
varice
Back to top
View user's profile Send private message
varice



Joined: Dec 29, 2004
Posts: 722
Location: Northeastern shore of Toledo Bend
Audio files: 22
G2 patch files: 49

PostPosted: Tue Jan 31, 2012 1:37 am    Post subject: A Pink Noise Tweak Reply with quote  Mark this post and the followings unread

Here is another version of a simple patch to generate an approximate pink noise signal. This one has an EQ added to boost the mid frequency band for a better spectrum.

A working example is used in the “mm 2 Osc VM” patch posted here:

http://electro-music.com/forum/topic-9258.html

Check out Variation 6 for a high resonance filter sweep of the pink noise source. Cool


Pink Noise 2.pch2
 Description:
Pink Noise building block version 2

Download
 Filename:  Pink Noise 2.pch2
 Filesize:  1.22 KB
 Downloaded:  332 Time(s)


_________________
varice
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [4 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » Clavia Nord Modular » G2 Building Blocks
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use