conquistadore
Forum Moderator
Joined: 03 Aug 2004
Posts: 514
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| white/pink noise |
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whats the difference between white and pink noise?
thanks,
conquistdore |
Sat Jan 15, 2005 2:23 am |
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AUdIoCoUrSeS
Joined: 31 Oct 2002
Posts: 2014
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| Noise, white and pink |
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White noise and pink noise are wavforms which sound like hiss. The frequency, amplitude and phase are all constantly varying.
When looking at the frequency spectrum of white noise you will find it to be completely flat and contain equal energy across the complete audio spectrum.
When looking at pink noise you will find it to have equal energy
per octave
.
Pink noise is more closely related to musical sounds and how the ear percieves audio (see equal loudness) so preferred for testing audio applications.
Hope that helps.
_________________
It's all in the ears. - Learn the concepts not the software.
Audio Courses is a way into the music business for you
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Sat Jan 15, 2005 4:29 am |
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conquistadore
Forum Moderator
Joined: 03 Aug 2004
Posts: 514
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| pink/white noise |
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hi,
thanks!
but i dont think i quite understood it. do you have any samples that could help understand it better?
thanks again,
conquistadore |
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Sat Jan 15, 2005 6:12 am |
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conquistadore
Forum Moderator
Joined: 03 Aug 2004
Posts: 514
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| white noise |
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thanks!
the white noise sounds like the noise when there is no cable on tv..
conquistadore |
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Mon Jan 17, 2005 8:37 am |
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AUdIoCoUrSeS
Joined: 31 Oct 2002
Posts: 2014
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| Calibration Using Pink Noise |
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You will find that noise sources, (while or pink), generally pink, is used for system calibration.
Often live P.A. systems will be fed pink noise whilst a microphone connected to a spectrum analyzer is walked around the venue and notice of readings taken.
This will display different shaped curves in the frequency graph due to the venue's contruction adding or subtracting percived sound energy. The P.A. system is then "E.Q'ed" for optimum delivery to the most amount of peope.
_________________
It's all in the ears. - Learn the concepts not the software.
Audio Courses is a way into the music business for you
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Mon Jan 17, 2005 10:15 am |
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wailingalleycat
Forum Manager
Joined: 07 Oct 2003
Posts: 694
Location: Jersey C.I (UK) |
| Real Time Analyser |
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Try downloading a free trial version of a real time analyser (RTA) such as the one from Allen & heath, it has a pink and white noise generator and will show you the frequency response of any sound you play through your computer.
A&H Real Time Analyser
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If In Doubt...Hit It With a Hammer, If Still In Doubt... Find a Bigger Hammer. |
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Mon Jan 17, 2005 2:04 pm |
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wailingalleycat
Forum Manager
Joined: 07 Oct 2003
Posts: 694
Location: Jersey C.I (UK) |
And who ever said i love A&H?? lol
_________________
If In Doubt...Hit It With a Hammer, If Still In Doubt... Find a Bigger Hammer. |
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Mon Jan 17, 2005 2:13 pm |
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