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MasticateTheNecro
Metal newbie

Joined: Thu May 24, 2007 9:29 pm
Posts: 262
Location: United States
PostPosted: Tue Feb 17, 2009 9:01 pm 
 

If someone here or someone you know has a sine wave generator, could you please record a frequency of 19Hz for me? Thats a D#/Eb, just octaves lower than standard.
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korgull
Metalhead

Joined: Mon Sep 19, 2005 1:53 am
Posts: 994
PostPosted: Tue Feb 17, 2009 10:17 pm 
 

You might be able to do it yourself by downloading a free tone generator program. I know there are some out there.

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mattp
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Joined: Sun Jun 11, 2006 9:57 pm
Posts: 2910
PostPosted: Tue Feb 17, 2009 10:23 pm 
 

19Hz is well below the range of most speakers, and just below the range of human hearing. You won't be able to hear it.
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MasticateTheNecro
Metal newbie

Joined: Thu May 24, 2007 9:29 pm
Posts: 262
Location: United States
PostPosted: Tue Feb 17, 2009 10:31 pm 
 

Wont be able to hear it with your ears, no. But 17-19Hz is the range of most organs' operations - you'd be able to feel it. It's sort of a subliminal thing. Makes you feel nauseous and sad and anxious and your eyes twitch subtley which causes slight hallucinations (see the case of the man who discovered this and the 'ghost' he thought he saw when it was in fact his office's A/C unit creating this frequency and making him hallucinate))). I'm just wanting to experiment what value it could have when layering it over some experimental ambient stuff.
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mattp
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Joined: Sun Jun 11, 2006 9:57 pm
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PostPosted: Wed Feb 18, 2009 12:33 am 
 

Most speakers won't reproduce that frequency at all. Most speakers, even high end monitors, roll off pretty severely around 50-60Hz, and few subwoofers go below 30Hz.

Reaper includes a sine wave synth that can respond to MIDI notes or frequency pitch.
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Bezerko
Vladimir Poopin

Joined: Tue Nov 28, 2006 2:50 am
Posts: 4806
Location: Venestraya
PostPosted: Wed Feb 18, 2009 8:45 am 
 

Masticate: Download Audacity and create sine waves until content.

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MasticateTheNecro
Metal newbie

Joined: Thu May 24, 2007 9:29 pm
Posts: 262
Location: United States
PostPosted: Wed Feb 18, 2009 10:09 pm 
 

Bezerko wrote:
Masticate: Download Audacity and create sine waves until content.

I have audacity :| I have never seen any 'sine wave' generator.
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livercage wrote:
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MasticateTheNecro
Metal newbie

Joined: Thu May 24, 2007 9:29 pm
Posts: 262
Location: United States
PostPosted: Wed Feb 18, 2009 10:13 pm 
 

mattp wrote:
Most speakers won't reproduce that frequency at all. Most speakers, even high end monitors, roll off pretty severely around 50-60Hz, and few subwoofers go below 30Hz.

Reaper includes a sine wave synth that can respond to MIDI notes or frequency pitch.
I was thinking that might be the case...so you're saying that it won't even be recognized, regardless that you'll not be able to hear it?
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mattp
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Joined: Sun Jun 11, 2006 9:57 pm
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PostPosted: Thu Feb 19, 2009 1:37 am 
 

Kind of. Speakers just aren't designed to make noise at that low of a frequency. You might hear/feel it it if you had a really tricked out speaker system with some ridiculous subs, but otherwise I think it'd be a lost effort.

That said, I could be totally wrong, and you might have a great idea on your hands.
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VRR
Metalhead

Joined: Sat Oct 14, 2006 7:57 am
Posts: 752
PostPosted: Thu Feb 19, 2009 8:31 am 
 

MasticateTheNecro wrote:
Bezerko wrote:
Masticate: Download Audacity and create sine waves until content.

I have audacity :| I have never seen any 'sine wave' generator.


Generate > Tone > Sine wave > 19hz


I think mattp is right though. All of the experiments into this sort of thing have used ludicrous equipment, like giant sub speakers set in concrete tubes many metres long for amplification, or (the one you mentioned) massive air-con fans in small box rooms, where the listener is effectively standing inside the amplifier itself.

The theory behind the idea appears to be sound (pun intended), but I think you need a lot of technical resources at your disposal to recreate the effects.

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