
Home  Forums  Rules  Articles  The diyAudio Store  Gallery  Blogs  Register  Donations  FAQ  Calendar  Search  Today's Posts  Mark Forums Read  Search 

Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving 

Thread Tools  Search this Thread 
21st January 2005, 10:08 PM  #11  
diyAudio Member
Join Date: Oct 2003
Location: Marin County, CA

Quote:
Yes, but Phi is not 1.6 exactly  it's irrational, (the 'most' irrational number in fact, beacuse it expands into more fractions ) and so it cannot feature in a set that sums to one. (Unless, does the irrationality of the 1/Phi side of a golden rhombus negate the irrationality of Phi side? dunno.) Either way, my mitre saw doesn't have a detent for the square root of 2, so the infinite series part of the measurement gets rounded off in the kerf. My point is theoretical, not practical. In my understanding, the use of the term 'golden' denotes the presence of the ratio Phi (1.619...) so while the "golden ratio" may sum to 1, and other ratios may sum to 1, the golden designation is not conferred upon the others.. I am not a mathemetician, so I'm likely wrong... if I am, please explain more. humbly, Andy
__________________
The oboe, it is clearly understood, is an ill wind that no one blows good. 

22nd January 2005, 03:11 AM  #12 
diyAudio Member
Join Date: Aug 2002
Location: Gaithersburg, MD

There's a book out called "The Golden Ration: The story of PHI, the world's most astonishing number". (1/137's pretty good, too, but I digress.) Y'all might like it.
(The ratio can be found in all manner of living things, just by virtue of the way they grow... the nautilus shell is probably the most famous version... see Cardas.)
__________________
Would a woodchuck bother to chuck MDF? 
22nd January 2005, 10:31 AM  #13  
diyAudio Member
Join Date: Oct 2003
Location: L.A., CA

Quote:
__________________
If it sounds good... it is good! 

22nd January 2005, 05:29 PM  #14  
diyAudio Member
Join Date: Jun 2003
Location: Chamblee, Ga.

Quote:
GM
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents. 

21st February 2012, 05:22 PM  #15 
diyAudio Member
Join Date: Aug 2009
Location: Brazil


21st February 2012, 07:17 PM  #16 
frugalphile(tm)
diyAudio Moderator

The ratio is usually defined by 0.618 to 1 to 1.618. This makes the math easier & more elegant since 1/0.618 = 1.618 (to 3 digits, phi is an irrational number with infinite number of digits in the decimal expansion)
0.618:1:1.618 x 1.618 = 1:1.618:2.618 dave
__________________
community sites tlinespeakers.org, frugalhorn.com, frugalphile.com ........ commercial site planet10HiFi p10hifi forum here at diyA 
21st February 2012, 08:11 PM  #17 
Speakerholic
diyAudio Moderator

Golden ratio: The higher the ratio of gold to 'filler' metals, the more it costs.

21st February 2012, 08:15 PM  #18 
diyAudio Member
Join Date: May 2005
Location: Victoria, B.C.

Or........

21st February 2012, 10:26 PM  #19 
diyAudio Member
Join Date: Aug 2009
Location: Brazil

Thanks pal. :)

12th June 2013, 03:12 PM  #20 
diyAudio Member
Join Date: Jan 2010
Location: Midwest U.S.A.

Oh so stinky bad. Translational mode analysis of a prismatic space (rectangles) provides the most spreading of resonances with a ratio of 1.1.414x1.732. Square root of 1x2x3. There has been a lot of nonsense published about this considering some single aspect which misses the translational modes and only considers the main modes. But then wrong is always the most popular.
__________________
What the other guy saidStanding on the shoulders of giants. New avatar no more little array 
Thread Tools  Search this Thread 


Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
One rib to rule them all  PMS  greenie512  MultiWay  19  13th January 2009 11:01 PM 
Why the rule on c2c spacing???  OlogyAudio  MultiWay  7  2nd June 2007 07:29 PM 
AudioCaps Rule!  Dave Jones  MultiWay  27  18th September 2003 08:41 AM 
Golden Rule????  Higo  MultiWay  5  14th March 2002 12:57 AM 
New To Site?  Need Help? 