Music Composer, music recognition software. Composer recognizes polyphonic music from a microphone or other Wave input or file and converts it into Midi sequences. You can sing, whistle or play guitar, piano, flute and so on with your microphone, Composer will automatically recognize and score your music and create standard Midi sequences. No Midi keyboard or musical experience required.
AKoff Guitar Assistant designed to assist in visual tuning a guitar with microphone or an electrical guitar connected to PCs sound card. It analyzes in real time a stream of audio signals from WAVE input of your sound card and calculates the main frequency. This frequency is shown by a pointer on graphic guitar signature stamp (frets), comparing it to the proper frequency. Tuning a string now simply means centering the pointer on the appropriate graphic fret.
Optics & Optical Physics is such a huge subject that it could occupy an entire career and then some. (Oh, I just realized, it has been my whole career!) Lasers, remote sensing, visualizing radiation in invisible wavelengths, seeing the very far, seeing the very small, communications through glass fibers, enhancing awareness... Optics is the mode we use to understand our world. Articles linked from this page will range widely and wildly but will all have optics in common.
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Zernike Polynomials used for representation of light beam wavefronts. Represent any 2-D surface as long as it has a circular footprint. |
Zernike Polynomials MathCAD sheet, in mathcad 2001i format. (Right Click and Select Save File to Download). This sheet calculates the zernike polynomial of your choice and displays a 3D graph. (Requires mathcad from mathsoft)
The Stark Effect is shown here in the splitting and shifting of spectral lines in hydrogen under the influence of an external electric field.
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What is the Stark Effect? This article discusses the spectroscopic effect of strong electric fields known as the Stark effect, named for Johannes Stark, the first to experimentally demonstrate the effect. |
Basics of Laser Beam Propagation. Here are some of the formulas and descriptions of wave phenomena in coherent beams. This is a work in progress, so please have patience, but go ahead and tell me if you see something wrong!
A short mathematical description of fourier propagation of E/M fields through free space and a simple lens. A longer version of this tutorial is found at the end of the pdf file describing laser beam propagation. Click here for the laser beam propagation tutorial.
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