Update: Fischer has added some fascinating tweaks to his mapping technique--check them out at the bottom of this post.

This is the same sound as led to the previous image, but Fischer has chosen a different type of wavelet to perform the transform and has played around with the result to produce a floral effect.

Using a bit of ingenious reasoning, Fischer has managed to create maps showing which pictures were taken by tourists, and which were taken by locals.

Fischer, 37, plotted one dot for each 25 people and gave colors according to how people were described in the census.

Eric Fischer, a California computer programmer used the 2000 Census of America to create a series of digital maps of dozens of majors cities , which show continuing racial divides in the country.