Comments on: Helium pitch-shifter http://kometbomb.net/2007/07/30/helium-pitch-shifter/ Journal of my adventures in Programming, the Internet and Life. Wed, 28 Jul 2010 11:27:08 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Phill http://kometbomb.net/2007/07/30/helium-pitch-shifter/comment-page-1/#comment-578 Phill Mon, 05 Jan 2009 07:02:07 +0000 http://kometbomb.net/2007/07/30/helium-pitch-shifter/#comment-578 It won't work. Helium changes voice pitch because the vocal cords behave essentially like a resonant chamber. The speaker has no such mechanism, so the frequency generated by the diaphragm in the speaker will be the same as that recieved by the diaphragm in the mic. It won’t work. Helium changes voice pitch because the vocal cords behave essentially like a resonant chamber. The speaker has no such mechanism, so the frequency generated by the diaphragm in the speaker will be the same as that recieved by the diaphragm in the mic.

]]> By: Dan http://kometbomb.net/2007/07/30/helium-pitch-shifter/comment-page-1/#comment-168 Dan Wed, 27 Feb 2008 16:20:51 +0000 http://kometbomb.net/2007/07/30/helium-pitch-shifter/#comment-168 Yeah, if it was the sound waves travelling through the helium that made your voice higher, then you wouldn't hear the higher pitch unless all of the air was helium, in which case you would die from a lack of oxygen. I'm pretty sure the helium sound is because of an effect of the helium on your body, not the sound waves. Yeah, if it was the sound waves travelling through the helium that made your voice higher, then you wouldn’t hear the higher pitch unless all of the air was helium, in which case you would die from a lack of oxygen. I’m pretty sure the helium sound is because of an effect of the helium on your body, not the sound waves.

]]> By: Hamilton Lovecraft http://kometbomb.net/2007/07/30/helium-pitch-shifter/comment-page-1/#comment-163 Hamilton Lovecraft Sun, 24 Feb 2008 04:09:48 +0000 http://kometbomb.net/2007/07/30/helium-pitch-shifter/#comment-163 I believe it *won't* work. My understanding is that helium makes the pitch of your voice rise because the vocal cords vibrate faster in light helium than in dense air. You might change the frequency response of the speaker a little, but the speaker's being driven by an external electrical signal that isn't affected by helium. I believe it *won’t* work.

My understanding is that helium makes the pitch of your voice rise because the vocal cords vibrate faster in light helium than in dense air. You might change the frequency response of the speaker a little, but the speaker’s being driven by an external electrical signal that isn’t affected by helium.

]]> By: poorsod http://kometbomb.net/2007/07/30/helium-pitch-shifter/comment-page-1/#comment-27 poorsod Wed, 22 Aug 2007 09:46:54 +0000 http://kometbomb.net/2007/07/30/helium-pitch-shifter/#comment-27 Not entirely sure. I remember reading somewhere that inhaling helium actually acts as a high-pass filter, so you wouldn't pitch-shift it upwards, just filter out all the low-frequency energy. I think. Probably best just to try it. Not entirely sure. I remember reading somewhere that inhaling helium actually acts as a high-pass filter, so you wouldn’t pitch-shift it upwards, just filter out all the low-frequency energy.

I think. Probably best just to try it.

]]> By: kometbomb http://kometbomb.net/2007/07/30/helium-pitch-shifter/comment-page-1/#comment-22 kometbomb Fri, 10 Aug 2007 17:43:10 +0000 http://kometbomb.net/2007/07/30/helium-pitch-shifter/#comment-22 Thanks for confirming this, I have to start looking for free balloons so I get some helium to test this. ;) Thanks for confirming this, I have to start looking for free balloons so I get some helium to test this. ;)

]]> By: Jochen http://kometbomb.net/2007/07/30/helium-pitch-shifter/comment-page-1/#comment-17 Jochen Sat, 04 Aug 2007 17:11:32 +0000 http://kometbomb.net/2007/07/30/helium-pitch-shifter/#comment-17 Hey man - that _will_ work, at least the upper one. Putting two different gases into your soundpitcher would result in a homegueneous mixture of the gases with a pitch-change according to the resulting density. Ever heard a transmission from deep seas divers working for offshore oil exploration and drilling? They stay at 500 meter depth and more for some days and their gas for aspiration is a mixture of oxygen and helium preventing the bends by substituting the "dangerous" nitrogen by helium. They sound like Mickey Mouse - and it's perfectly the situation described by your pitchshifter.png. So it's all not that stupid nonsense as you may have thought of before:-) Greets Jochen Hey man – that _will_ work, at least the upper one. Putting two different gases into your soundpitcher would result in a homegueneous mixture of the gases with a pitch-change according to the resulting density.

Ever heard a transmission from deep seas divers working for offshore oil exploration and drilling? They stay at 500 meter depth and more for some days and their gas for aspiration is a mixture of oxygen and helium preventing the bends by substituting the “dangerous” nitrogen by helium. They sound like Mickey Mouse – and it’s perfectly the situation described by your pitchshifter.png. So it’s all not that stupid nonsense as you may have thought of before:-)
Greets
Jochen

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