Search site

Add to Google

Featured Articles
Adaptive Tannoy back

Tannoy

Most rail/underground station public announcement systems suffer from the problem of not being able to rise above the abient noise level. The announcer has no way of knowing how noisy the environment surrounding the loudspeaker is in order to adjust the volume accordingly. These loudspeakers should be incorporated with a microphone which measures the level of ambient noise, and automatically adjusts the volume accordingly.

back

discuss
 by by David at 02 Feb 2006 23:00:12
Copyrights © Transcraft Trading Limited 2006.All rights reserved. Bots Rss-rss