On 6/7/06, Mohamed Ismail Bari wrote: > This is indeed a neat method to help the blind people. I feel that (in > Berlin)the vehicle noise zipping near by would easily distort the soft beep > sounds. May be blind people have very sharp ears. The best ones that I've seen (heard?...) were in Dublin. They sounded just like the original Space Invaders arcade machine. Took me a while to work out where the noise kept coming from! Dan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist