complex-color demo

This demo will add color, capture new information, and show about 12 seconds of sound on the screen at a time without the "water-skier's wake". There is more to say, but for that you'll have to check back later.

So far we only have an approximate version of the color part working (e.g. on Firefox, Chrome, Vivaldi, Opera, Edge) for shorter snapshots [up here]. 

An example snippet, from "Just a closer walk with thee" on the Dixieland Praise album with Bob Snyder on clarinet and David B. Hooten on trumpet, is shown below. Note in particular the phase beats (color stripes) in that E4 trumpet note early on in the snapshot.

Some examples of the type of thing you might find in an Illustrated Field-Guide to Wildlife Sounds are shown in the table below.

On the topic of musical instrument comparisons, check out the differences in harmonics which show in the "simulated instrument" figure below:

In particular note the missing 1st harmonic in the case of the clarinet note. The late Ed Jaynes here makes the case that this is not a consequence of the clarinet's single reed (in comparison e.g. to the oboe or bassoon), but a consequence of the clarinet's cylindrical (in comparison e.g. to the oboe's conical) bore. He claims that this is easy to test by putting a double reed on a clarinet and hearing a "clarinet" rather than an "oboe" sound.

To "whet your whistle" about technical applications, you might enjoy pondering the illustration below of what logarithmic complex-color Fourier-phase interferometry of a frequency-modulated whistle, on treble-and-bass clef, might look like. This specific example uses rectangular interpolation, about which more in the days ahead.