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colored noise?
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Gilad Refael
IsraTrance Full Member
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Posted : May 15, 2003 12:42
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hey, i saw people talk about stuff like white noise and other types (colors?) of noises.
can someone tell me what does each of them mean and why do they have "special" names.
gilad.
  REHAB is for quitters |
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bilbobagginz
Started Topics :
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399
Posted : May 15, 2003 13:06
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analogous to the light the sound has a spectrum.
so white noise is a "uniformly distributed window" in frequency domain i.e. all the frequencies are present in equal probaility.
pink noise is not a window, but a triangle - the higher the frequency - the smaller the probability.
u can read here: http://www.msaxon.com/colors.htm
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Gilad Refael
IsraTrance Full Member
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Posted : May 15, 2003 14:58
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ok stuff i didn't understand:
window
power density
octave (i know what it is but not in this context)
and some other stuff 
would anyone be more simple?
and where can i hear those kind of noises, if its possible to hear them. REHAB is for quitters |
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bilbobagginz
Started Topics :
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Posted : May 15, 2003 15:56
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window ... is a graph like this one:
http://www.cis.rit.edu/resources/software/sig_manual/images/graphs/rect.gif
it is like a rectangle, or window.
"power density" is the graph of power of signal
(square signal in time) in the frequency domain. i think u should read some if u really want to know what this is. though, it describes the signlal in a special way ...
i am ill now, so i have no patience..
octave is 12 semitones. and a semitone is a difference between mi & fa or si & do.
this can be translated into Herz.
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Anak
Anakoluth
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108
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2395
Posted : May 15, 2003 18:53
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Gilad Refael
IsraTrance Full Member
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Posted : May 16, 2003 00:58
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thanks (kinda), be well:)
REHAB is for quitters |
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medir
Inactive User
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113
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1193
Posted : May 16, 2003 11:41
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nectarios:
playd a bit with numbers, but i don t get where u got this factor 1.059463 from...? ...some words plz... =(-;
bomski
experiment !
make it your motto day and night.
experiment,
and it will lead you to the light.
the apple on the top of the tree
is never too high to achieve,
so take an example from eve...
experiment ! |
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medir
Inactive User
Started Topics :
113
Posts :
1193
Posted : May 16, 2003 12:15
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isn t (SQ) RT official...?
...thnx man...gotcha !
bombom
experiment !
make it your motto day and night.
experiment,
and it will lead you to the light.
the apple on the top of the tree
is never too high to achieve,
so take an example from eve...
experiment ! |
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Gilad Refael
IsraTrance Full Member
Started Topics :
79
Posts :
2113
Posted : May 16, 2003 12:40
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can you give a wav file of white noise?
REHAB is for quitters |
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flip
Started Topics :
2
Posts :
19
Posted : May 16, 2003 22:59
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i see i can get my DSP lessons here at isratrance 
Anakoluth : the noises are named by one color because they have the most energy at frequecies which are identified by that color,which means red color for high frequencies blue for low frequencies and thier variations in between.
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Anak
Anakoluth
Started Topics :
108
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2395
Posted : May 18, 2003 11:45
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flip
Started Topics :
2
Posts :
19
Posted : May 18, 2003 22:35
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well the color thing came from physics, as you know light has frequencies like a sound signle does.
the switch from light to noise was made because due to the properties of each kind of noise.
each kind of noise got his color name due to the fact that it's frequencies get their highest intensity in that region.
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djsid
Aghori Tantrik
Started Topics :
85
Posts :
651
Posted : Jun 3, 2003 15:11
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