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Starship noise generator
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Tantal



Joined: May 27, 2015
Posts: 2
Location: Wien

PostPosted: Wed May 27, 2015 5:00 pm    Post subject: Starship noise generator Reply with quote  Mark this post and the followings unread

For one of my projects (pimped scale model of Battlestar Galactica) I'm looking for a sound generator, that simulates the noise of a starship engine. Something like this here:
https://www.youtube.com/watch?v=mopMCLbt1L0

My first idea was to use brown noise with a low pass filter. But that might sound to synthetic. A little bit of humming and wobbling would be nice Wink

I have never worked with oscillators or sound ICs before, so I'd appreciate any source of information.
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Dan Lavin



Joined: Nov 09, 2006
Posts: 649
Location: Spring Lake, Mi, USA
Audio files: 21

PostPosted: Fri May 29, 2015 8:42 am    Post subject: Reply with quote  Mark this post and the followings unread

Using synthesis will involve quite a bit of work. And then it might only be 'close enough.' I would be inclined to just sample the exact sound. You could use this for playback:
https://www.sparkfun.com/products/12897

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PHOBoS



Joined: Jan 14, 2010
Posts: 5591
Location: Moon Base
Audio files: 705

PostPosted: Fri May 29, 2015 12:46 pm    Post subject: Reply with quote  Mark this post and the followings unread

some noise some (modulated) filtering some low frequency boosting and (modulated) reverb will create something similar.
That's not going to be a simple circuit, so you might indeed be better of with a recorded sound. You could use a cheap mp3 player
for it which makes it possible to use a long recording with other sci-fi sounds added. But you say it's for a model, does it have a
build in speaker ? Because in that case it's probably not going to sound very realistic.

Anyway, I did a quick test and patched something up. Cool


PHOBoS - Spaceship engine test patch.wav
 Description:
PHOBoS - Spaceship engine test patch

Download
 Filename:  PHOBoS - Spaceship engine test patch.wav
 Filesize:  10.63 MB
 Downloaded:  1208 Time(s)


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Tantal



Joined: May 27, 2015
Posts: 2
Location: Wien

PostPosted: Sat May 30, 2015 2:22 pm    Post subject: Reply with quote  Mark this post and the followings unread

PHOBoS wrote:
But you say it's for a model, does it have a
build in speaker ? Because in that case it's probably not going to sound very realistic.


It's a big model. I have enough space for a decent bass speaker Smile


Quote:
Anyway, I did a quick test and patched something up. Cool


Wow that sounds awesome! How did you do this?
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PHOBoS



Joined: Jan 14, 2010
Posts: 5591
Location: Moon Base
Audio files: 705

PostPosted: Sat May 30, 2015 2:58 pm    Post subject: Reply with quote  Mark this post and the followings unread

Tantal wrote:
Wow that sounds awesome! How did you do this?

Very Happy I used (a small section of) this synth and some FX:
Posted Image, might have been reduced in size. Click Image to view fullscreen.

a white noise generator going into a 12dB LP filter that's slightly modulated by a triangle LFO
from there it goes into a 12dB BP filter also slightly modulated by a triangle LFO
this is mixed together with a low frequency (audio) sawtooth going through another LP filter, again slightly modulated.
from there it goes into a mixer that has a 3 band tone control with the high frequencies turned down and the low
frequencies turned up and there's some modulated delay/reverb added. And than it goes to my main mixer which
has some build in FX and it adds more reverb. All the modulations add a little bit of variation to it and the reverb adds the space.

I'm no expert in synthesizing sounds just tried what I though would create a similar sound as the video you posted.

You should be able to recreate something like this with wren (if you don't have another synth to try it).

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