27 December 2011

2012-12-27, A Present for the President

The Republicans seem to be doing everything they can to help President Obama gain re-election.

What did Santa bring you?

20 December 2011

2011-12-20, Still Missin' the Old Mooney Super 21


Forty years later, still missin' the front office of a Mooney Super 21 ...

http://cdn-www.airliners.net/aviation-photos/middle/0/1/8/0203810.jpg

 ·  ·  · 39 minutes ago near Norman

02 December 2011

2011-11-20, Name That Frequency! Of Equal-tempered Musical Scales and Such


For those of you with a musical and/or mathematical bent (or maybe just plain *bent*!), here's an article I just posted on my website, http://chuckoates.com/
 .

"Have you ever wondered how the frequencies for musical notes are determined? It turns out that an exponential function, specifically 2^(n/12), is heavily involved in the modern 12-note chromatic equal tempered scale, successor to the old just-toned scale used before the time of J.S. Bach.

Here’s a link to a discussion of the equal tempered musical scale and its use in practical piano tuning, http://bit.ly/udaTpq

 , as well as Prof. Oates’s Excel spreadsheet investigating some of the formulas presented in the above discussion,http://chuckoates.com/CollegeAlgebra/Module-4/Musical-Scales,Just-toned-and-Equal-tempered.xls
 .

Enjoy! (My current College Algebra students will.) :^)

chuckoates.com
Last Updated: Sunday, 20 November 2011, 2250 hr CDT (GMT - 5:00), Version 9.55a: Added musical scales calculations and explanatory reference. --CLO

 ·  ·  · November 20 at 11:06pm

  • Akash Patel and Chetna Patel like this.

    • Chuck Oates You may need to tell your browser to Open the downloaded spreadsheet when you click on the last link above.
      November 20 at 11:07pm · 

    • Chuck Oates Another physics/math of music link:http://www.phy.mtu.edu/~suits/notefreqs.html
       .
      November 20 at 11:32pm ·  · 

    • Chuck Oates For those of you deranged enough to care about accordion tunings, accordion reed ranks, and such (well, I never made any claim of sanity), see http://bit.ly/vL4n1J
       and possiblyhttp://bit.ly/s49v5a
       .

      For those of you who don't know what an accordion is (!), seehttp://bit.ly/viFEXS
       .

      A-musettedly yours,
      Chuck

      P.S. Yes, my (grand-)parents, bless their hearts, started me in my somewhat dubious musical career on a accordion when I was about 7. My left hand *still* doesn't work worth a hoot on a piano or an organ! %^0

      Give me the ubiquitous piano or let me rattle the windows with a pipe organ, electronically simulated or otherwise, but an accordion? Puleeease! dOb (ear protection emoticon)

      www.cs.cmu.edu

      Note that throughout this article, I am only talking about tuning of the right-hand side of an accordion since typically there are no tuning variations encountered on the left-hand side of accordions.
      November 21 at 12:21am ·  · 

    • Chuck Oates Well, their hearts were definitely in the right place; it's just that there aren't a lot of polka party gigs these days, even on the Great Plains. Ja, ja, ja ... *shakes head*
      November 21 at 9:32am