Talk:Tenney norm: Difference between revisions

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= ARCHIVED WIKISPACES DISCUSSION BELOW =
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'''All discussion below is archived from the Wikispaces export in its original unaltered form.'''
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== Contradiction ==
http://www.plainsound.org/pdfs/JC&ToH.pdf gives Tenney's "harmonic distance" as
 
<ul class="quotelist"><li>HD(fa, fb) ∝ log(a) + log(b) = log(ab)</li></ul>
 
where a/b is the frequency ratio fa/fb in simplified form:
 
<ul class="quotelist"><li>a = fa /gcd(fa, fb), b = fb /gcd(fa, fb), and a ≥ b</li></ul>
 
http://lumma.org/tuning/faq/#heights  defines it as sqrt(n*d), which is not the same.
 
sqrt(100*7) = 26.45
 
log2(100*7) =  9.45
 
- '''Omegatron''' September 11, 2014, 07:33:46 AM UTC-0700
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Tenney *harmonic distance* is not Tenney *height*, which is the topic of this page. My FAQ defines Tenney height as a*b. It says Tenney height is *generalized* to geomean(a*b*c...).
 
On this wiki, a*b is called Benedetti height. The name was changed after my FAQ was written, since Benedetti had priority.
 
- '''clumma''' February 06, 2015, 08:19:12 PM UTC-0800
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