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  • White Noise Sweep . . ?

White Noise Sweep . . ?

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Started February 10th, 2015 · 7 replies · Latest reply by Planish 3 years, 10 months ago

S
steverlord

0 sounds

2 posts

10 years, 10 months ago
#1

Hi Everyone,

I'm requesting (what I believe) is called a "White Noise Sweep".

I've looked around the site for this and some come very close but I always need to tweak it . . . and therefore messing it up (!)

Again, I'm guessing a "White Noise Sweep" is the term for it,
but I describe it as:

"A very high pitched static, windy sound that starts high and gradually gets lower in tone . . until it completely drops out."

(Think House/Trance music I suppose.)
Maybe 15 seconds or more in duration from high . . . . to low.

Thanks in advance for your help with this!

Peace,
Steve

copyc4t

283 sounds

654 posts

10 years, 10 months ago
#2

Hi,
I've made an example almost 30 seconds long; if your DAW supports sample stretching, you can easily speed it up at will.

http://www.freesound.org/people/copyc4t/sounds/263815/

The sweep is linear, you'll probably prefer it closer to logarithmic, it can be done eventually.

HTH

copyc4t - http://soundcloud.com/copyc4t
D
deleted_user_2906614

46 sounds

157 posts

10 years, 10 months ago
#3

I remember this sort of effect being used in a lot of cheesy pop-trance around the turn of the century (‘Will I’ by Ian Van Dahl comes to mind, the radio edit opens with this sound).

Here’s how I think I would go about making this with a software analog-type synth. Set one oscillator to output noise, put it through a low-pass filter with the resonance high, and set an envelope to sweep the cutoff down. For a bit of extra sparkle you can also set an LFO to modulate the cutoff at the same time.

(I’m assuming you know a little about synthesis, if not, what I’ve just wrote will sound like gobbledegook but I hope it helps.)

Timbre

3,354 sounds

2,336 posts

10 years, 10 months ago
#4

In order of likelihood ...
http://www.freesound.org/people/Timbre/sounds/166074/
http://www.freesound.org/people/Timbre/sounds/198765/

S
steverlord

0 sounds

2 posts

10 years, 10 months ago
#5

Perfect!
Thanks everyone for your help.

Excellent files!

Peace,
Steve

Cloud-10

107 sounds

14 posts

3 years, 11 months ago
#6

deleted_user_2906614 wrote:
I remember this sort of effect being used in a lot of cheesy pop-trance around the turn of the century (‘Will I’ by Ian Van Dahl comes to mind, the radio edit opens with this sound).

Here’s how I think I would go about making this with a software analog-type synth. Set one oscillator to output noise, put it through a low-pass filter with the resonance high, and set an envelope to sweep the cutoff down. For a bit of extra sparkle you can also set an LFO to modulate the cutoff at the same time.

(I’m assuming you know a little about synthesis, if not, what I’ve just wrote will sound like gobbledegook but I hope it helps.)

Which DAW do you use?

Cloud-10 Please follow me and download my sounds, it helps! https://www.youtube.com/@cloudten https://soundcloud.com/cloud-ten-music
P
Planish

2 sounds

7 posts

3 years, 10 months ago
#7

NitPick: If you sweep it, it's no longer "white noise". It's more like "violet noise changing to red noise". Even that's not quite right.

deleted_user_2906614 wrote:
Here’s how I think I would go about making this with a software analog-type synth. Set one oscillator to output noise, put it through a low-pass filter with the resonance high, and set an envelope to sweep the cutoff down. For a bit of extra sparkle you can also set an LFO to modulate the cutoff at the same time.

(I’m assuming you know a little about synthesis, if not, what I’ve just wrote will sound like gobbledegook but I hope it helps.)


That would be a piece of cake to create in the free version of VCV Rack - see https://vcvrack.com/Rack
Pass the white noise through a narrow band-pass filter, and use an inverted ramp or sawtooth CV (control voltage) to sweep the resonant frequency from high to low.
If you make the pass band too narrow, it will sound more like a descending whistle or "dropping bomb" sound.

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