Join Early Retirement Today
Thread Tools Search this Thread Display Modes
Bach and Shepard's scale
Old 09-18-2009, 09:05 AM   #1
Thinks s/he gets paid by the post
IndependentlyPoor's Avatar
Join Date: Jul 2009
Location: Austin
Posts: 1,142
Bach and Shepard's scale

A musician friend forwarded me this and it is just delightful
You might enjoy this visual representation of Bach's "crab cannon" from the Musical Offering, showing various theme representations as they are heard: forward, backward (retrograde), inverted and up-side-down-backwards (retrograde inversion), and in various combinations. Can't imagine what Bach's head felt like after doing this all day... most every day

That got me started on a web treasure hunt and I found some goodies, including stuff about Shepard's scale

And of course that clever Johann wrote a canon using it

IndependentlyPoor is offline   Reply With Quote
Join the #1 Early Retirement and Financial Independence Forum Today - It's Totally Free!

Are you planning to be financially independent as early as possible so you can live life on your own terms? Discuss successful investing strategies, asset allocation models, tax strategies and other related topics in our online forum community. Our members range from young folks just starting their journey to financial independence, military retirees and even multimillionaires. No matter where you fit in you'll find that is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with our members, see fewer ads, upload photographs, create a retirement blog, send private messages and so much, much more!

Old 09-18-2009, 10:20 AM   #2
Give me a museum and I'll fill it. (Picasso)
Give me a forum ...
Join Date: Sep 2005
Location: Northern IL
Posts: 21,579
Very Cool! Thanks for posting.

I'm a very amateurish musician, with little formal training, and I am just amazed at the things Bach has done. I assume I'd be even more amazed if I understood it at a deeper level.

I think I've heard that rising tome done differently before, and I recorded one myself once on a little cassette multi-track recorder and a synth. That was a rising tone which faded in volume as it rose, and then another recorde a few seconds later doing the same. As you build up the tracks it sounds like it is always rising.

I didn't analyze the discreet tones there, but I suspect they start with a lot of high harmonics, then bring in more fundamental tone as they rise in the scale (or vice verse). That can 'trick' you to focus on the tone an octave lower or higher.

OK, one of my fave Bach-influenced tunes:

ERD50 is online now   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Norwegian Widow on a national scale Meadbh Other topics 7 05-14-2009 02:33 PM

» Quick Links

All times are GMT -6. The time now is 02:09 PM.
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.