As you know, audio has a bandwidth of 20hz to 20,000hz. It can also be said that it has a bandwidth of 10 octaves. An octave does not have a predetermined value. A change in frequency of a multiple of 2, means a change of one octave. An octave has to have a starting point. If the starting point is 1000hz, one octave up is 2000hz. One octave down from 1000hz is 500hz. Equalizers commonly have one octave spacing between their slider controls.
The following screen caps are from a demo on the full version. The first one covers 1 octave. the second one covers two octaves.
This site was started for pages/information that didn't fit well on my other sites. It includes topics from backing up computer files to small engine repair to 3D graphics software to basic information on diabetes.
This site introduces you to macro photography. Macro photography is nothing more than the photography of small objects. It can take quite a while to understand the limitations associated with this type of photography. Without help, people will struggle to get good images. Understanding what's possible and what's not possible makes the task much easier. If you need to photograph relatively small objects (6" in height/width down to a few thousandths of an inch), this site will help.
If you're interested in air rifles, this site will introduce you to the types of rifles available and many of the things you'll need to know to shoot accurately. It also touches on field target competition. There are links to some of the better sites and forums as well as a collection of interactive demos.
This site helps anyone new to computers and anyone with a basic understanding of computers with a desire to learn more about the internal components of a computer. If you have a computer that you'd like to upgrade but don't know where to start, this is a good site for you.