Talk:Brown note

From Wikipedia, the free encyclopedia

Contents

[edit] Remove the MythBusters and Brainiac sections

Considering that these shows only tested a handful of notes, and not a spectrum, they should not be included as a "disproof".

All of the examples have only mentioned specific notes, and therefore, present an unfair biased POV.

[edit] Brainiac

This was also tried in the show 'Brainiac', apparently successfully [[1]]

The show asked for feedback from viewers as they had transmitted the note on the programme (after appropriate warnings.. I chickened out and turned the sound down!). Unfortunately I never heard what happened.

Well, given the "scientific quality" of Brainiac, I wouldn't believe them a second. Besides, I didn't chicken out and nothing happened to me. Which may very well due to the nature of the tone broadcasted, because it was quite audible (and thus not < 20 Hz). If it did anything for any viewers, probably only through suggestion. And both the speaker they "used" and any given TV set are definitely not capable of reproducing said frequencies.

Having seen that particular episode of Brainiac, I can say that nothing happened and the sound being broadcast was audible. Manufacturing a TV to produce sounds which people can't hear is pointless outside of the scientific community (if at all). Willard 00:19, 29 July 2005 (UTC)

[edit] Brown Noise is unrelated

Somebody put a couple parenthetical also known as "Brown Noise". Brown Noise has nothing to do with the mythical brown note, brown noise is a kind of noise with a precisely defined frequency power spectrum--nothing to do with this silly urban legend. --Brentt 05:00, 13 January 2006 (UTC)

They might have gotten that from the South Park episode in which a note with this effect is called the "Brown Noise". Timrem 23:04, 4 September 2006 (UTC)

[edit] Phase effects

"In addition, the strategy of surrounding the subjectlo with speakers without accounting for phase effects would have resulted in a loss of effective power being transmitted, especially at the geometrical centre of the speakers."

Certainly, with four speakers surrounding someone, unwanted interference effects would occur; but surely at the 'geometrical centre' all 4 sources would be in phase and thus interfere constructively? (on the not unreasonable assumption that the signal is transmitted to all 4 speakers in phase).
I've removed the clause after the comma in the second sentence as that seems to make it more accurate; but I could just be missing something. Please correct me if this is indeed the case.

To be honest, due to the long wavelength of sounds at these frequencies, the intensity of the sound inside the ring of speakers should never reach a minimum at any point within this ring at all (unless the speakers were placed more than about 30m apart); this would seem to make interference effects rather neglegible. Davidros 16:12, 27 April 2006 (UTC)

[edit] Related issues

We know that cetain levels of low frequencies can cause lung collapse (trying to get the ref.) But has anyone heard of exposure to very loud (>100 dBA) bass frequencies cuasing heart palpitations? I had a case of this last weekend and I think it may be to do with the fantastically high levels of bass in the room.--Light current 14:50, 28 September 2006 (UTC)

  1. http://www.wired.com/news/medtech/0,1286,64829,00.html
  2. If you're prone to them, probably lots of things will trigger them. — Omegatron 15:38, 28 September 2006 (UTC)
YEs I ve been told stress can trigger them also. I was stressed by all the bloody loud bass! 8-)--Light current 15:42, 28 September 2006 (UTC)
Happens to me, too. :-/ — Omegatron 17:10, 28 September 2006 (UTC)


[edit] Nikola Tesla created such vibrations (really)

For entertainment, Tesla once convinced his good friend Mark Twain to test out a vibrating platform in his Manhattan lab. Twain took him up on the offer and found it to his liking. When Tesla commanded Twain to come down off the platform Twain refused because he was having a good time. A few minutes later Twain ran from the device. It seems that Tesla had deliberately neglected to tell Twain that the vibration tended to cause diarrhea.

http://www.intuitor.com/resonance/tesla.php quoting Margaret Cheney, Tesla Man Out Of Time, 1989, Dorset Press —Preceding unsigned comment added by 195.90.183.53 (talk) 02:51, 11 June 2008 (UTC)

[edit] A Small Cut from the End of the Article

"Interestingly, the wavelength of this note is 746 cm (24.5 ft), which is roughly equivalent to the length of the small intestine."

1. Human small intestine varies from 400 to 700 cm 2. Spurious and coincidental 3. Anyone want to keep it? Jpvinall 08:48, 6 December 2006 (UTC)

Nope. — Omegatron 14:48, 6 December 2006 (UTC)