[CAUT] Anechoic chamber - experiments

[tnrwim at aol.com]

anechoic

Maybe I'm the only one, but I'm not familiar with this word. First, how do you pronounce it. Second, what is the dffinition. Third, what is an anechoic room?

Wim






-----Original Message-----
From: ed440 <ed440 at mindspring.com>
To: Jim Busby <jim_busby at byu.edu>; caut <caut at ptg.org>
Sent: Fri, Jun 18, 2010 12:30 pm
Subject: Re: [CAUT] Anechoic chamber - experiments


Jim-
That's not my question.
f you play a major third and move your head around, it may beat very clearly in 
ne place and very little in another.
hus I am thinking of the ongoing argument about "beatless" octaves. Perhaps the 
eating varies depending on the location of the listening ear. If so, this 
hould be fairly easy to detect in an anechoic chamber with the equipment you 
escribe. This might explain why one person hears an octave as beatless and 
nother person hears beats.
he best octaves to test would be mid-range octaves, where the inharmonicity is 
airly well matched, not the extreme bass octaves.
on't re-tune the octave, move the microphone to a new location.
Ed S.
-----Original Message-----
From: Jim Busby <jim_busby at byu.edu>
Sent: Jun 18, 2010 6:14 PM
To: Ed Sutton <ed440 at mindspring.com>, "caut at ptg.org" <caut at ptg.org>
Subject: RE: [CAUT] Anechoic chamber - experiments

Hi Ed,

Rick Baldassin's book "On Pitch" has references to these but Rick told me that 
hese were "not very scientific studies". Chris Robinson told me that he and 
ick did these studies years ago and that they didn't save the studies. So, 
ou're right. How much of the fundamental do we really hear at C1? Are Rick's 
raphs accurate? And I've always wanted to see how much a supposedly identical 
nison varies at the different partials. (Why no unison can be tuned perfectly 
ure...)

Thanks.
Jim


Perhaps you can do some mapping of octaves, in particular to see if there are 
ectors along which coincident partials beat with more or less amplitude, or, if 
ou will, vectors for beatless octaves.
Same could be done for other intervals.
Like Don says, record what you find.
Ed Sutton


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/caut.php/attachments/20100618/e79ad4a6/attachment.htm>