This is the sonification of a street map of paris. If you look at the sound's spectogram you can see lines which represent streets. On the left for example is a star-shaped crossing of several streets: this are the champs elysees ending in the etoile place. For details see http://www. Waqwaq. Info/atanasiu/art/synesthesia/.
I got hold of an old sony dat machine (tcd-d10 pro) and noticed a very interesting sound when i opened the door to the cassette compartment. The sound was recorded with an olympus ls-14 and was slightly edited in wavosaur.